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Here are three versions of the introduction to this article:
Version of 9 Sept. 2007:
A digital single-lens reflex camera (digital SLR or D-SLR) is a digital camera that operates on the same optical and mechanical principles as a modern electronic autofocus 35mm film single-lens reflex camera. The key difference is that the film is replaced with a CCD or CMOS image sensor plus accompanying electronics, thus creating images digitally in-camera, without the need to first chemically develop a latent image on film.
Version of 10 Sept. 2007, after I had rewritten the introduction, plus some tweeks by Dicklyon:
A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that uses an automatic mirror system placed between the lens and the image sensor to direct the image from the lens through the viewfinder where it can be viewed by the photographer. The viewfinder includes a matte focusing screen at its focal plance, to allow accurate focusing and to allow the light into the prism that directs the light through the viewfinder.
As in film SLRs, the through-the-lens optical viewing is primarily to support accurate fast viewfinding with interchangable lenses.
The basic operation of a DSLR, having the mirror reflecting the image away from the image sensor except briefly during the exposure, precludes the ability to see the image in the LCD display before the picture is taken, a major difference from the way an ordinary digital camera works. Some newer DSLR models feature an option generally known as " live preview" that does allow the image to be seen on the LCD display, although with certain limitations and while the optical viewfinder is dark.
In most other respects a DSLR is similar in principle and operation to a standard digital camera; the image captured by the CCD or CMOS image sensor is processed electronically and stored on a removable memory device. The price range and extra features and options available vary widely from model to model, and newer and better models arrive every year.
Version of 8 Oct. 2007:
A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that uses an automatic mirror system placed between the lens and the image sensor to direct the image from the lens through the viewfinder where it can be viewed by the photographer. The viewfinder includes a matte focusing screen, to allow accurate focusing and to allow the light into the prism that directs the light through the viewfinder.
The basic electro-mechanical operation of a DSLR is as follows: for viewing purposes, the mirror reflects the light coming through the attached lens through the fresnel lens and the condenser lens where it is further reflected by the pentaprism (or pentamirror) to the photographer's eye. During exposure, the mirror swings upward from its 45 degree viewing angle, thus providing light to be received by the image sensor, and this action precludes the ability to view the image shown on the LCD display screen before the image is exposed. This is a major operational difference from the way an ordinary digital camera (digicam) works. Some newer DSLR models feature live preview, allowing the image to be seen on the LCD display, although with certain limitations and with the optical viewfinder disabled.
In most other respects, a DSLR is similar in principle and operation to a standard digital camera; the image captured by the CCD or CMOS image sensor is processed electronically and stored on an internal, removable, or external memory device. The price range and extra features and options available vary widely from model to model, and newer, more improved and more featured models arrive almost every three to four months.
Other opinions? -- RenniePet 19:02, 8 October 2007 (UTC) -- RenniePet 19:25, 8 October 2007 (UTC)
> I think I liked the oldest one best.
Oh, dear. :-)
> ... or certainly not in the first paragraph of the lead.
Actually, it isn't / wasn't.
I feel fairly strongly that the introduction should
1. Not be dependent on film SLRs or even mention them. More and more of the people getting into DSLRs are young and never used a film camera and consider film to be ancient like vinyl LPs.
2. Sould mention in some way the lack of an image on the LCD. I hang out on a DSLR photography forum and again and again there are newbies who ask how to turn on the LCD - it comes as a total shock to them that it is not possible.
If nobody else wants to try doing a rewrite of the introduction I'll make another attempt in a couple of days. OK? -- RenniePet 17:20, 9 October 2007 (UTC)
An easier to read intro is welcome - I would also be in favor of an intro that helps out "Joe six-pack" but the lead shouldn't selectively pick and choose personal favorite advantages of DSLR's. How about an 'advantages' section that jumps to the many advantages noted within the article? 211.209.30.29 15:53, 15 October 2007 (UTC)
Version of 31st Dec. 2014:
I added a more explicit explantion and link to SLR as link in the second paragraph, as the link in the first paragraph is somewhat burried in the text. The earlier link may be missed by someone fast scanning through article. By putting an explicit line in a singl short paragraph the significance of SLR to DSLR will be retained for people who want fast read/jump betwen articles as opposed to read them in depth. The second advnatage is that people buying DSLR lenses can discover that SLR lenses are availble and will work manually - which is fine for some applications such as videography. Another use of them is on micro four thirds camera's through the use of telecompressors AKA metabones X-mass ( talk) 05:33, 31 December 2014 (UTC)
To the unknown user 211.209.30.29 who removed the following:
Let's understand that a number of people new to photography (especially those involved in law enforcement and forensic photography, to name a few) would certainly be interested in this reference. This is not so much a 'PR' for Fuji (as you put it in your edit) as just simply "mentioning a tool of the trade". It could be further argued about the whole page that any picture or mention of a certain manufacturer's DSLR model is also a 'promo' for that manufacturer's company, which is simply not true for this page so I stand by my reinsertion of the text. It informs readers in general of peculiar types of cameras in photography that are an answer to a particular type of photographic problem, and this is generally true in photography and with most manufacturers. Canon, for example, makes a 24mm tilt/shift lens; nobody else makes this lens including Nikon (and I wish they would). So, a mention of this lens might solve a certain kind of problem that an architectural photographer or landscape photographer might have, and that photographer would need this information. A general reader of this web-encyclopedia would also appreciate the variety of SLR and DSLR models that are out in the marketplace.-- MurderWatcher1 17:09, 15 October 2007 (UTC)
From an earlier version of the article:
I must be missing something, but how is the ability to exchange lenses inherently unique to SLR cameras? JIP | Talk 17:55, 15 October 2007 (UTC)
Added references to this section re. advantages / disadvatages. Obviously given the nature of the subject, most of these are enthusiast sites and not peer-reviewed academic journals. However, I feel they are 'Sources ... appropriate to the claims made' as per WP:V. Any help with finding further sources is of course appreciated. 219.251.88.109 02:24, 17 October 2007 (UTC)
A lot of the information here is only relevant to current dSLR. However, the E-10 and the E-20N/P from Olympus were of SLR design and share only a few of the characteristics of current dSLRs. This article needs to be updated to reflect that. —Preceding unsigned comment added by 74.73.6.35 ( talk) 11:27, 27 November 2007 (UTC)
Perhaps it is possible to mention the E-10 and E-20 as technically SLRs, but ones that use an unconventional design. Conventional being a moving mirror. Yes, they are similar to the Pellix and the Nikon F3H [2] Micahmedia ( talk) 20:37, 26 March 2008 (UTC)
Why do I have to read the entire page AND the talk page to get a basic understanding of why DSLR cameras are used over digicams by many photographers. I come to Wikipedia to gain understanding about topics, rather than revel in scientific explanations. Sure, keep the detail but please add a sentence to the top (above the toc) which simply explains WHY the distinctions are. Something like: "DSLRs are preferred over standard digicams by many photographers due to the optical viewfinder, which shows the true image which will be captured, rather than a low-resolution LCD image of an Electronic Viewfinder (EVF)." Perhaps adding: "Most DSLRs come with the ability to equip a range of lenses, unlike most digicams, however there are some exceptions to this." - surely this is not too much to ask? Gerard talk 16:56, 7 May 2008 (UTC)
Fair enough, but surely that is simply common knowledge - the point of the Single-Lens Reflex. Check the OVF vs EVF section, or the 2nd paragraph on SLR. The Burden of Evidence applies to "All quotations and any material challenged or likely to be challenged", which I think doesn't apply to that summarisation of content already in this article (and others). Gerard talk 20:25, 7 May 2008 (UTC)
Okay, perhaps rephrase my sentence. you could say (in a brief sentence early on) that the optical viewfinder offers more precise (?) higher resolution (?) images, which more accurately (?) represent the photograph taken (because the mirror redirects the light etc etc). Obviously the old "some people say" is inappropriate, but surely we can list the advantages, or the resulant differences of use? Gerard talk 20:49, 7 May 2008 (UTC)
Just released today is the Nikon D90, first dSLR with a movie mode.
[3] [4] —Preceding unsigned comment added by 58.107.0.53 ( talk) 08:35, 27 August 2008 (UTC)
Hello all, I just wanted to chime in that I helped update this section today with information about a couple new Single Lens Reflex cameras capable of recording HD movies, and changed the title of this section to what is now the common vernacular of the subset of DSLR cameras with a specific HD movie options- HDSLR.
I tried to find reference to the first instance I could find of the term HDSLR, and the best I could do is an ebook released this past April. To be fair I know at least 3x professional commercial photogs in New York, and a professor in Santa Barbara (Brooks Institute of Photography) that have been using the term HDSLR to describe DSLR cameras with HD movie capabilities since sometime last year. Unfortunately I couldn't find anything in writing to link to.
About me, I'm new to wikipedia, very new.... so I'm still getting the hang of some of this. But I'm not to photography- with a little more than 30-years under my belt, had my own studio at one time and about 7-years of teaching at the college level. Semi-retired now (you never really retire from photography), I've got the time to put into "wiki" so I'm going to try to help out the other editors of this page (and other pages) by tracking down reputable sources where needed. CameraPHD
The lede for this article is in dire need of a re-write. How's this for starters:
Micahmedia ( talk) 03:54, 13 October 2008 (UTC)
The HDSLR section meanders between historical coverage ("the first HDLSR was...") and a market survey of current models. There are merits to covering both angles, but the current article is too cluttered with impertinent trivia. Or perhaps some of the trivia needs to be expanded upon.
For example, the Canon 5D Mark II "firmware 2.0.3/firmware 2.0.4". That's an awkward sentence. The important point is that the 5DM2 lacked broadcast-compliant video at introduction, then was later given that feature through a firmware introduction. It's enough to simply say "firmware 2.0.4", or even leave the version out altogether, because the main point is that the feature is present/not present. When/how the feature got added is irrelevant trivia, and it should only be included in the article if it doesn't disrupt the flow of writing.
I'm against listing individual models and their features. wikipedia is an encyclopedia, not a product guide. And the product listings tend to get outdated very quickly (e.g. what about the Rebel 550D/T2i, and the 1D Mark IV?) Specific models should only be listed if they are notable with respect to the topic at hand. For me, the Nikon D90 being the first DSLR with HD movie-mode passes that 'notability test', flawed as it is. Most of the other models do not. They're just refinements/evolutionary-improvements along the evolution of digital cameras. I suppose the 5D Mark 2 is notable since it's the only one with full 35mm sensor-size. —Preceding unsigned comment added by 99.41.58.37 ( talk) 14:50, 29 May 2010 (UTC)
The word "digicam" needs to be defined. The digicam page disambiguates to digital cameras, or digital camouflage. Obviously the relevant article is the former, but this article includes DSLRs as well as every other kind of digital camera. Yet, in the DSLR article (and in this very talk page) DSLRs are often compared and contrasted to digicams. Many might assume that "digicam" means compact digital camera, but Wikipedia's articles do not make this clear at any time, and it's not an assumption that I made. In the article, the following sentence made little sense to me:
So, I'd recommend either not using the word "digicam," or defining it unambiguously. - Random anonymous UK user on 188.220.91.30 ( talk) 23:18, 25 August 2010 (UTC)
The photo shows the two cameras lop-sided/dipping towards the center ? 203.34.154.24 ( talk) 16:25, 6 October 2010 (UTC)
Where are the pictures? Please give me a sample of an image using these lens. Thanks Yhabe of blank blu ray discs — Preceding unsigned comment added by Yhabe30 ( talk • contribs) 06:33, 23 September 2011 (UTC)
A significant fact is that old fashioned 35mm SLRs almost entirely provided a fresnel lens in the viewfinder, providing a bright image. Most, or even all, DSLRs use a matte screen which is far darker and requires light adaption of the photographers eye. Can an explanation be included please, I do not know why. Reg nim ( talk) 22:16, 13 February 2012 (UTC)
Aspect ratio is mentioned only two times (!) in the entire article. In my opinion, in an article which extensively talks about the "sizes" of images, sensors, and lenses; aspect ratio is one of the most important issues because of the fact that aspect ratio is the actual definitve unit of measurement in terms of rectangular images.
Especially in the "Table of sensor sizes" as well as the image captioned as "Drawing showing the relative sizes of sensors," aspect ratio should be mentioned. I suggest adding a line to Table of sensor sizes and modifying the aforementioned image to depict aspect ratios. -- 98.199.22.63 ( talk) 20:28, 17 February 2012 (UTC)
In this diff, we heard that "Compact digital cameras mostly have an even smaller image sensor, additionally providing a larger depth of field." This is extremely misleading. The only way a smaller sensor provides a larger depth of field is if the photo is taken with a smaller absolute aperture diameter (e.g. same f-number and smaller focal length with same field of view), and therefore gets fewer photons from the scene. The same larger DOF can be obtained by the DSLR by stopping down to the same aperture diameter. So I took this out. Dicklyon ( talk) 03:52, 27 March 2012 (UTC)
While I'm at it, the lead states, "often using a larger image sensor format providing a higher dynamic range". Why does larger image sensor give higher dynamic range?? In the text there is one requested ref for the same statement and one ref [5] that does not talk about dynamic range at all. I think DSLR might often have better dynamic range, since they have newer sensors, and more expensive image engines but I do not think that the actual size of the sensor matters at all? Any comments? -- Stefan talk 06:12, 28 March 2012 (UTC)
The result of the move request was: not moved. Strong and well-argued consensus against. Andrewa ( talk) 12:39, 1 December 2012 (UTC)
Digital single-lens reflex camera → Digital SLR – Widely known by the short-form name [6] [7] [8] and lately even better known by the acronym "DSLR" [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19]. I'll compromise and content myself with Digital SLR for the foreseeable future. Marcus Qwertyus ( talk) 18:05, 23 November 2012 (UTC)
IMHO many people still thinking that the lenses are the main subject for better quality as in film camera, but in digital camera the sensor sensitivity (not the size, because small sensor might be more sensitive than the big ones and the sensitivity is increasing in line with time, so newer sensor is better than the old ones and maybe smaller) is the first important thing. The second is the propietary processor software, if the sensor is good, but the processing is bad, the result will be bad. The third is the lens, but because it is digital, so slight quality different of the lenses will be absorb by the camera processor. In Micro four thirds system, its mount is same and the lenses can be used with camera which support m4/3 without any adapter and we can see the processor take the role more than the quality of the lens itself.
DxO Labs has tested more than 6,000 Combination of Camera & Lens and if we scrutinize the results, we can agree with as mention above. If to scrutinize is too hard for you, so you can pick only several lead of every brands and try to analize it. But if you doubt with the result, you are better to scrutinize all of them.
I propose to add in Larger sensor size and better image quality section as below:
There are several sensor producers and the sensitivity among it are different each other, so the bigger sensor is not means directly give better result. Light struck the sensor will be processed by each propietary software, so same sensor size from the same producer will give different result when processed by different software. DxO Labs has test more than 6,000 Combination of Camera & Lenses and give us the fact that even Micro Four Thirds image quality can compete with APS-C image quality. Micro Four Thirds sensor size is about 61 to 68 percent of APS-C sensor size.
Thank you so much in advance for your time to read and analyze my proposal. Gsarwa ( talk) 15:27, 23 December 2013 (UTC)
According to my research, this was the first DSLR:
http://eocamera.jemcgarvey.com/
Do they see this (in German):
Rudolfo42 ( talk) 20:25, 25 March 2016 (UTC)
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Why does the DSLR need the "condenser lens" (number 6 in the first image)? I didn't find the answer in the article. -- egg 08:33, 17 October 2017 (UTC)
The late 1980s seem suspiciously early for a DSLR. Is it absolutely certain that these weren't still video cameras? The "SVC" in Nikon SVC hints that this may be the case. Shiggerino ( talk) 22:40, 2 December 2021 (UTC)
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Here are three versions of the introduction to this article:
Version of 9 Sept. 2007:
A digital single-lens reflex camera (digital SLR or D-SLR) is a digital camera that operates on the same optical and mechanical principles as a modern electronic autofocus 35mm film single-lens reflex camera. The key difference is that the film is replaced with a CCD or CMOS image sensor plus accompanying electronics, thus creating images digitally in-camera, without the need to first chemically develop a latent image on film.
Version of 10 Sept. 2007, after I had rewritten the introduction, plus some tweeks by Dicklyon:
A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that uses an automatic mirror system placed between the lens and the image sensor to direct the image from the lens through the viewfinder where it can be viewed by the photographer. The viewfinder includes a matte focusing screen at its focal plance, to allow accurate focusing and to allow the light into the prism that directs the light through the viewfinder.
As in film SLRs, the through-the-lens optical viewing is primarily to support accurate fast viewfinding with interchangable lenses.
The basic operation of a DSLR, having the mirror reflecting the image away from the image sensor except briefly during the exposure, precludes the ability to see the image in the LCD display before the picture is taken, a major difference from the way an ordinary digital camera works. Some newer DSLR models feature an option generally known as " live preview" that does allow the image to be seen on the LCD display, although with certain limitations and while the optical viewfinder is dark.
In most other respects a DSLR is similar in principle and operation to a standard digital camera; the image captured by the CCD or CMOS image sensor is processed electronically and stored on a removable memory device. The price range and extra features and options available vary widely from model to model, and newer and better models arrive every year.
Version of 8 Oct. 2007:
A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that uses an automatic mirror system placed between the lens and the image sensor to direct the image from the lens through the viewfinder where it can be viewed by the photographer. The viewfinder includes a matte focusing screen, to allow accurate focusing and to allow the light into the prism that directs the light through the viewfinder.
The basic electro-mechanical operation of a DSLR is as follows: for viewing purposes, the mirror reflects the light coming through the attached lens through the fresnel lens and the condenser lens where it is further reflected by the pentaprism (or pentamirror) to the photographer's eye. During exposure, the mirror swings upward from its 45 degree viewing angle, thus providing light to be received by the image sensor, and this action precludes the ability to view the image shown on the LCD display screen before the image is exposed. This is a major operational difference from the way an ordinary digital camera (digicam) works. Some newer DSLR models feature live preview, allowing the image to be seen on the LCD display, although with certain limitations and with the optical viewfinder disabled.
In most other respects, a DSLR is similar in principle and operation to a standard digital camera; the image captured by the CCD or CMOS image sensor is processed electronically and stored on an internal, removable, or external memory device. The price range and extra features and options available vary widely from model to model, and newer, more improved and more featured models arrive almost every three to four months.
Other opinions? -- RenniePet 19:02, 8 October 2007 (UTC) -- RenniePet 19:25, 8 October 2007 (UTC)
> I think I liked the oldest one best.
Oh, dear. :-)
> ... or certainly not in the first paragraph of the lead.
Actually, it isn't / wasn't.
I feel fairly strongly that the introduction should
1. Not be dependent on film SLRs or even mention them. More and more of the people getting into DSLRs are young and never used a film camera and consider film to be ancient like vinyl LPs.
2. Sould mention in some way the lack of an image on the LCD. I hang out on a DSLR photography forum and again and again there are newbies who ask how to turn on the LCD - it comes as a total shock to them that it is not possible.
If nobody else wants to try doing a rewrite of the introduction I'll make another attempt in a couple of days. OK? -- RenniePet 17:20, 9 October 2007 (UTC)
An easier to read intro is welcome - I would also be in favor of an intro that helps out "Joe six-pack" but the lead shouldn't selectively pick and choose personal favorite advantages of DSLR's. How about an 'advantages' section that jumps to the many advantages noted within the article? 211.209.30.29 15:53, 15 October 2007 (UTC)
Version of 31st Dec. 2014:
I added a more explicit explantion and link to SLR as link in the second paragraph, as the link in the first paragraph is somewhat burried in the text. The earlier link may be missed by someone fast scanning through article. By putting an explicit line in a singl short paragraph the significance of SLR to DSLR will be retained for people who want fast read/jump betwen articles as opposed to read them in depth. The second advnatage is that people buying DSLR lenses can discover that SLR lenses are availble and will work manually - which is fine for some applications such as videography. Another use of them is on micro four thirds camera's through the use of telecompressors AKA metabones X-mass ( talk) 05:33, 31 December 2014 (UTC)
To the unknown user 211.209.30.29 who removed the following:
Let's understand that a number of people new to photography (especially those involved in law enforcement and forensic photography, to name a few) would certainly be interested in this reference. This is not so much a 'PR' for Fuji (as you put it in your edit) as just simply "mentioning a tool of the trade". It could be further argued about the whole page that any picture or mention of a certain manufacturer's DSLR model is also a 'promo' for that manufacturer's company, which is simply not true for this page so I stand by my reinsertion of the text. It informs readers in general of peculiar types of cameras in photography that are an answer to a particular type of photographic problem, and this is generally true in photography and with most manufacturers. Canon, for example, makes a 24mm tilt/shift lens; nobody else makes this lens including Nikon (and I wish they would). So, a mention of this lens might solve a certain kind of problem that an architectural photographer or landscape photographer might have, and that photographer would need this information. A general reader of this web-encyclopedia would also appreciate the variety of SLR and DSLR models that are out in the marketplace.-- MurderWatcher1 17:09, 15 October 2007 (UTC)
From an earlier version of the article:
I must be missing something, but how is the ability to exchange lenses inherently unique to SLR cameras? JIP | Talk 17:55, 15 October 2007 (UTC)
Added references to this section re. advantages / disadvatages. Obviously given the nature of the subject, most of these are enthusiast sites and not peer-reviewed academic journals. However, I feel they are 'Sources ... appropriate to the claims made' as per WP:V. Any help with finding further sources is of course appreciated. 219.251.88.109 02:24, 17 October 2007 (UTC)
A lot of the information here is only relevant to current dSLR. However, the E-10 and the E-20N/P from Olympus were of SLR design and share only a few of the characteristics of current dSLRs. This article needs to be updated to reflect that. —Preceding unsigned comment added by 74.73.6.35 ( talk) 11:27, 27 November 2007 (UTC)
Perhaps it is possible to mention the E-10 and E-20 as technically SLRs, but ones that use an unconventional design. Conventional being a moving mirror. Yes, they are similar to the Pellix and the Nikon F3H [2] Micahmedia ( talk) 20:37, 26 March 2008 (UTC)
Why do I have to read the entire page AND the talk page to get a basic understanding of why DSLR cameras are used over digicams by many photographers. I come to Wikipedia to gain understanding about topics, rather than revel in scientific explanations. Sure, keep the detail but please add a sentence to the top (above the toc) which simply explains WHY the distinctions are. Something like: "DSLRs are preferred over standard digicams by many photographers due to the optical viewfinder, which shows the true image which will be captured, rather than a low-resolution LCD image of an Electronic Viewfinder (EVF)." Perhaps adding: "Most DSLRs come with the ability to equip a range of lenses, unlike most digicams, however there are some exceptions to this." - surely this is not too much to ask? Gerard talk 16:56, 7 May 2008 (UTC)
Fair enough, but surely that is simply common knowledge - the point of the Single-Lens Reflex. Check the OVF vs EVF section, or the 2nd paragraph on SLR. The Burden of Evidence applies to "All quotations and any material challenged or likely to be challenged", which I think doesn't apply to that summarisation of content already in this article (and others). Gerard talk 20:25, 7 May 2008 (UTC)
Okay, perhaps rephrase my sentence. you could say (in a brief sentence early on) that the optical viewfinder offers more precise (?) higher resolution (?) images, which more accurately (?) represent the photograph taken (because the mirror redirects the light etc etc). Obviously the old "some people say" is inappropriate, but surely we can list the advantages, or the resulant differences of use? Gerard talk 20:49, 7 May 2008 (UTC)
Just released today is the Nikon D90, first dSLR with a movie mode.
[3] [4] —Preceding unsigned comment added by 58.107.0.53 ( talk) 08:35, 27 August 2008 (UTC)
Hello all, I just wanted to chime in that I helped update this section today with information about a couple new Single Lens Reflex cameras capable of recording HD movies, and changed the title of this section to what is now the common vernacular of the subset of DSLR cameras with a specific HD movie options- HDSLR.
I tried to find reference to the first instance I could find of the term HDSLR, and the best I could do is an ebook released this past April. To be fair I know at least 3x professional commercial photogs in New York, and a professor in Santa Barbara (Brooks Institute of Photography) that have been using the term HDSLR to describe DSLR cameras with HD movie capabilities since sometime last year. Unfortunately I couldn't find anything in writing to link to.
About me, I'm new to wikipedia, very new.... so I'm still getting the hang of some of this. But I'm not to photography- with a little more than 30-years under my belt, had my own studio at one time and about 7-years of teaching at the college level. Semi-retired now (you never really retire from photography), I've got the time to put into "wiki" so I'm going to try to help out the other editors of this page (and other pages) by tracking down reputable sources where needed. CameraPHD
The lede for this article is in dire need of a re-write. How's this for starters:
Micahmedia ( talk) 03:54, 13 October 2008 (UTC)
The HDSLR section meanders between historical coverage ("the first HDLSR was...") and a market survey of current models. There are merits to covering both angles, but the current article is too cluttered with impertinent trivia. Or perhaps some of the trivia needs to be expanded upon.
For example, the Canon 5D Mark II "firmware 2.0.3/firmware 2.0.4". That's an awkward sentence. The important point is that the 5DM2 lacked broadcast-compliant video at introduction, then was later given that feature through a firmware introduction. It's enough to simply say "firmware 2.0.4", or even leave the version out altogether, because the main point is that the feature is present/not present. When/how the feature got added is irrelevant trivia, and it should only be included in the article if it doesn't disrupt the flow of writing.
I'm against listing individual models and their features. wikipedia is an encyclopedia, not a product guide. And the product listings tend to get outdated very quickly (e.g. what about the Rebel 550D/T2i, and the 1D Mark IV?) Specific models should only be listed if they are notable with respect to the topic at hand. For me, the Nikon D90 being the first DSLR with HD movie-mode passes that 'notability test', flawed as it is. Most of the other models do not. They're just refinements/evolutionary-improvements along the evolution of digital cameras. I suppose the 5D Mark 2 is notable since it's the only one with full 35mm sensor-size. —Preceding unsigned comment added by 99.41.58.37 ( talk) 14:50, 29 May 2010 (UTC)
The word "digicam" needs to be defined. The digicam page disambiguates to digital cameras, or digital camouflage. Obviously the relevant article is the former, but this article includes DSLRs as well as every other kind of digital camera. Yet, in the DSLR article (and in this very talk page) DSLRs are often compared and contrasted to digicams. Many might assume that "digicam" means compact digital camera, but Wikipedia's articles do not make this clear at any time, and it's not an assumption that I made. In the article, the following sentence made little sense to me:
So, I'd recommend either not using the word "digicam," or defining it unambiguously. - Random anonymous UK user on 188.220.91.30 ( talk) 23:18, 25 August 2010 (UTC)
The photo shows the two cameras lop-sided/dipping towards the center ? 203.34.154.24 ( talk) 16:25, 6 October 2010 (UTC)
Where are the pictures? Please give me a sample of an image using these lens. Thanks Yhabe of blank blu ray discs — Preceding unsigned comment added by Yhabe30 ( talk • contribs) 06:33, 23 September 2011 (UTC)
A significant fact is that old fashioned 35mm SLRs almost entirely provided a fresnel lens in the viewfinder, providing a bright image. Most, or even all, DSLRs use a matte screen which is far darker and requires light adaption of the photographers eye. Can an explanation be included please, I do not know why. Reg nim ( talk) 22:16, 13 February 2012 (UTC)
Aspect ratio is mentioned only two times (!) in the entire article. In my opinion, in an article which extensively talks about the "sizes" of images, sensors, and lenses; aspect ratio is one of the most important issues because of the fact that aspect ratio is the actual definitve unit of measurement in terms of rectangular images.
Especially in the "Table of sensor sizes" as well as the image captioned as "Drawing showing the relative sizes of sensors," aspect ratio should be mentioned. I suggest adding a line to Table of sensor sizes and modifying the aforementioned image to depict aspect ratios. -- 98.199.22.63 ( talk) 20:28, 17 February 2012 (UTC)
In this diff, we heard that "Compact digital cameras mostly have an even smaller image sensor, additionally providing a larger depth of field." This is extremely misleading. The only way a smaller sensor provides a larger depth of field is if the photo is taken with a smaller absolute aperture diameter (e.g. same f-number and smaller focal length with same field of view), and therefore gets fewer photons from the scene. The same larger DOF can be obtained by the DSLR by stopping down to the same aperture diameter. So I took this out. Dicklyon ( talk) 03:52, 27 March 2012 (UTC)
While I'm at it, the lead states, "often using a larger image sensor format providing a higher dynamic range". Why does larger image sensor give higher dynamic range?? In the text there is one requested ref for the same statement and one ref [5] that does not talk about dynamic range at all. I think DSLR might often have better dynamic range, since they have newer sensors, and more expensive image engines but I do not think that the actual size of the sensor matters at all? Any comments? -- Stefan talk 06:12, 28 March 2012 (UTC)
The result of the move request was: not moved. Strong and well-argued consensus against. Andrewa ( talk) 12:39, 1 December 2012 (UTC)
Digital single-lens reflex camera → Digital SLR – Widely known by the short-form name [6] [7] [8] and lately even better known by the acronym "DSLR" [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19]. I'll compromise and content myself with Digital SLR for the foreseeable future. Marcus Qwertyus ( talk) 18:05, 23 November 2012 (UTC)
IMHO many people still thinking that the lenses are the main subject for better quality as in film camera, but in digital camera the sensor sensitivity (not the size, because small sensor might be more sensitive than the big ones and the sensitivity is increasing in line with time, so newer sensor is better than the old ones and maybe smaller) is the first important thing. The second is the propietary processor software, if the sensor is good, but the processing is bad, the result will be bad. The third is the lens, but because it is digital, so slight quality different of the lenses will be absorb by the camera processor. In Micro four thirds system, its mount is same and the lenses can be used with camera which support m4/3 without any adapter and we can see the processor take the role more than the quality of the lens itself.
DxO Labs has tested more than 6,000 Combination of Camera & Lens and if we scrutinize the results, we can agree with as mention above. If to scrutinize is too hard for you, so you can pick only several lead of every brands and try to analize it. But if you doubt with the result, you are better to scrutinize all of them.
I propose to add in Larger sensor size and better image quality section as below:
There are several sensor producers and the sensitivity among it are different each other, so the bigger sensor is not means directly give better result. Light struck the sensor will be processed by each propietary software, so same sensor size from the same producer will give different result when processed by different software. DxO Labs has test more than 6,000 Combination of Camera & Lenses and give us the fact that even Micro Four Thirds image quality can compete with APS-C image quality. Micro Four Thirds sensor size is about 61 to 68 percent of APS-C sensor size.
Thank you so much in advance for your time to read and analyze my proposal. Gsarwa ( talk) 15:27, 23 December 2013 (UTC)
According to my research, this was the first DSLR:
http://eocamera.jemcgarvey.com/
Do they see this (in German):
Rudolfo42 ( talk) 20:25, 25 March 2016 (UTC)
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Why does the DSLR need the "condenser lens" (number 6 in the first image)? I didn't find the answer in the article. -- egg 08:33, 17 October 2017 (UTC)
The late 1980s seem suspiciously early for a DSLR. Is it absolutely certain that these weren't still video cameras? The "SVC" in Nikon SVC hints that this may be the case. Shiggerino ( talk) 22:40, 2 December 2021 (UTC)