Canon 20D versus Canon 800D
The Canon EOS 20D and the Canon EOS 800D (labelled Canon T7i in some countries) are two digital cameras that were officially introduced, respectively, in August 2004 and February 2017. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The 20D has a resolution of 8.2 megapixel, whereas the 800D provides 24 MP.
The physical size and weight of the Canon 20D and the Canon 800D are illustrated in the side-by-side display below. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the 20D – represents 100 percent across all the size and weight measures).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 800D is notably smaller (14 percent) than the Canon 20D. Moreover, the 800D is markedly lighter (31 percent) than the 20D. In this context, it is worth noting that neither the 20D nor the 800D are weather-sealed.
The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can find an overview of suitable optics in the Canon EF Lens Catalog.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible comparisons there.
|Camera Body Specifications
|Canon 20D (⇒ rgt)||144 mm||106 mm||72 mm||770 g||700||no||2004||1,499||discont.||check|
|Canon 800D (⇒ lft)||131 mm||100 mm||76 mm||532 g||600||no||2017||749||latest||check|
|Canon 2000D (⇒ lft | rgt)||129 mm||101 mm||78 mm||475 g||500||no||2018||449||latest||check|
|Canon 77D (⇒ lft | rgt)||131 mm||100 mm||76 mm||540 g||600||no||2017||899||latest||check|
|Canon M6 (⇒ lft | rgt)||112 mm||68 mm||45 mm||390 g||295||no||2017||779||latest||check|
|Canon G7 X Mark II (⇒ lft | rgt)||106 mm||61 mm||42 mm||319 g||265||no||2016||699||latest||check|
|Canon 750D (⇒ lft | rgt)||132 mm||101 mm||78 mm||555 g||440||no||2015||749||discont.||check|
|Canon 7D II (⇒ lft | rgt)||149 mm||112 mm||78 mm||910 g||670||YES||2014||1,799||latest||check|
|Canon 60D (⇒ lft | rgt)||145 mm||106 mm||79 mm||755 g||1100||YES||2010||1,399||discont.||check|
|Canon 7D (⇒ lft | rgt)||148 mm||111 mm||74 mm||860 g||800||YES||2009||1,699||discont.||check|
|Canon 50D (⇒ lft | rgt)||146 mm||108 mm||74 mm||822 g||800||YES||2008||1,299||discont.||check|
|Canon 40D (⇒ lft | rgt)||146 mm||108 mm||74 mm||822 g||750||no||2007||1,299||discont.||check|
|Canon 30D (⇒ lft | rgt)||144 mm||106 mm||74 mm||785 g||750||no||2006||1,399||discont.||check|
|Canon 350D (⇒ lft | rgt)||127 mm||94 mm||64 mm||540 g||400||no||2005||899||discont.||check|
|Canon 10D (⇒ lft | rgt)||150 mm||107 mm||75 mm||850 g||500||no||2003||1,999||discont.||check|
|Canon 300D (⇒ lft | rgt)||142 mm||99 mm||72 mm||649 g||400||no||2003||899||discont.||check|
|Nikon D200 (⇒ lft | rgt)||147 mm||113 mm||74 mm||920 g||400||YES||2005||1,699||discont.||check|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The 800D was launched at a markedly lower price (by 50 percent) than the 20D, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tent to lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the 800D is 2 percent smaller. They nevertheless have the same format factor of 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a slightly smaller sensor, the 800D offers a higher resolution of 24 megapixel, compared with 8.2 MP of the 20D. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.72μm versus 6.42μm for the 20D). However, it should be noted that the 800D is much more recent (by 12 years and 6 months) than the 20D, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Canon 20D (⇒ rgt)||APS-C||8.2||3504||2336||no||21.9||11.0||721||62|
|Canon 800D (⇒ lft)||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|Canon 2000D (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/30p||..||..||..||..|
|Canon 77D (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|Canon M6 (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
|Canon G7 X Mark II (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||-||-||-||-|
|Canon 750D (⇒ lft | rgt)||APS-C||24.0||6000||4000||1080/60p||22.7||12.0||919||71|
|Canon 7D II (⇒ lft | rgt)||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70|
|Canon 60D (⇒ lft | rgt)||APS-C||17.9||5184||3456||1080/30p||22.2||11.5||813||66|
|Canon 7D (⇒ lft | rgt)||APS-C||17.9||5184||3456||1080/30p||22.0||11.7||854||66|
|Canon 50D (⇒ lft | rgt)||APS-C||15.1||4752||3168||no||21.8||11.4||696||63|
|Canon 40D (⇒ lft | rgt)||APS-C||10.1||3888||2592||no||22.1||11.3||703||64|
|Canon 30D (⇒ lft | rgt)||APS-C||8.2||3504||2336||no||21.5||10.8||736||59|
|Canon 350D (⇒ lft | rgt)||APS-C||8.0||3456||2304||no||21.8||10.8||637||60|
|Canon 10D (⇒ lft | rgt)||APS-C||6.3||3072||2048||no||21.1||10.9||571||57|
|Canon 300D (⇒ lft | rgt)||APS-C||6.3||3072||2048||no||21.0||10.8||544||55|
|Nikon D200 (⇒ lft | rgt)||APS-C||10.0||3872||2592||no||22.3||11.5||583||64|
Many modern cameras are not only capable of taking still images, but can also record movies. The 800D indeed provides for movie recording, while the 20D does not. The highest resolution format that the 800D can use is 1080/60p.
Apart from body and sensor, cameras can and do differ across a variety of features. The 20D and the 800D are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The adjacent table lists some of the other core features of the Canon 20D and Canon 800D along with similar information for a selection of comparators. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.
|Canon 20D (⇒ rgt)||optical||YES||1.8||118||fixed||no||8000||5.0||13||no|
|Canon 800D (⇒ lft)||optical||no||3.0||1040||swivel||YES||4000||6.0||12||no|
|Canon 2000D (⇒ lft | rgt)||optical||no||3.0||920||fixed||no||4000||3.0||9.2||no|
|Canon 77D (⇒ lft | rgt)||optical||YES||3.0||1040||swivel||YES||4000||6.0||12||no|
|Canon M6 (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||9.0||5||no|
|Canon G7 X Mark II (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||2000||8.0||7||YES|
|Canon 750D (⇒ lft | rgt)||optical||no||3.0||1040||swivel||YES||4000||5.0||12||no|
|Canon 7D II (⇒ lft | rgt)||optical||YES||3.0||1040||fixed||no||8000||10.0||11||no|
|Canon 60D (⇒ lft | rgt)||optical||YES||3.0||1040||swivel||no||8000||5.3||13||no|
|Canon 7D (⇒ lft | rgt)||optical||YES||3.0||920||fixed||no||8000||8.0||12||no|
|Canon 50D (⇒ lft | rgt)||optical||YES||3.0||920||fixed||no||8000||6.3||13||no|
|Canon 40D (⇒ lft | rgt)||optical||YES||3.0||230||fixed||no||8000||6.5||12||no|
|Canon 30D (⇒ lft | rgt)||optical||YES||2.5||230||fixed||no||8000||5.0||13||no|
|Canon 350D (⇒ lft | rgt)||optical||no||1.8||115||fixed||no||4000||3.0||YES||no|
|Canon 10D (⇒ lft | rgt)||optical||YES||1.8||118||fixed||no||4000||3.0||13||no|
|Canon 300D (⇒ lft | rgt)||optical||no||1.8||118||fixed||no||4000||2.5||YES||no|
|Nikon D200 (⇒ lft | rgt)||optical||YES||2.5||230||fixed||no||8000||5.0||12||no|
The 800D is a current model that online retailers, such as amazon, will have in stock. In contrast, the 20D has been discontinued (but it can be found pre-owned on ebay). As a replacement in the same line of cameras, the 20D was succeeded by the Canon 30D.
So what is the bottom line? Is the Canon 20D better than the Canon 800D or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Canon EOS 20D:
- Easier setting verification: Has an LCD display on top to control shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
- Longer lasting: Can take more shots (700 versus 600) on a single battery charge.
- More heavily discounted: Has been available for much longer (launched in August 2004).
Arguments in favor of the Canon EOS 800D:
- More detail: Has more megapixels (24 vs 8.2MP), which boosts linear resolution by 71%.
- Broader imaging potential: Can capture not only stills but also 1080/60p video.
- Larger screen: Has a bigger rear LCD (3.0" vs 1.8") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 118k dots).
- More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Faster burst: Shoots at higher frequency (6 vs 5 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (131x100mm vs 144x106mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 238g or 31 percent) and is thus easier to take along.
- More affordable: Was introduced into a lower priced category (50 percent cheaper at launch).
- More modern: Reflects 12 years and 6 months of technical progress since the 20D launch.
If the count of relative strengths (bullet points above) is taken as a measure, the 800D is the clear winner of the contest (11 : 4 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs.
In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the 20D or the 800D. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is why hands-on reviews by experts are important. The following table reports the overall rankings of the cameras as published by some of the major camera review sites. The full reviews are available, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Canon 20D (⇒ rgt)||-||HiRec||-||reviewed||-||2004||1,499||discont.||check|
|Canon 800D (⇒ lft)||..||80/100 Gold||4.5/5||..||4/5||2017||749||latest||check|
|Canon 2000D (⇒ lft | rgt)||..||..||..||..||..||2018||449||latest||check|
|Canon 77D (⇒ lft | rgt)||..||82/100 Silver||4.5/5||..||4/5||2017||899||latest||check|
|Canon M6 (⇒ lft | rgt)||-||80/100 Silver||4/5||4.5/5||4/5||2017||779||latest||check|
|Canon G7 X Mark II (⇒ lft | rgt)||HiRec||81/100 Silver||4.5/5||4/5||4.5/5||2016||699||latest||check|
|Canon 750D (⇒ lft | rgt)||-||75/100||4.5/5||4.5/5||4.5/5||2015||749||discont.||check|
|Canon 7D II (⇒ lft | rgt)||Rec||84/100 Silver||4/5||5/5||4.5/5||2014||1,799||latest||check|
|Canon 60D (⇒ lft | rgt)||87/100 Rec||79/100 Silver||4/5||5/5||4.5/5||2010||1,399||discont.||check|
|Canon 7D (⇒ lft | rgt)||93/100 HiRec||84/100||4.5/5||5/5||4.5/5||2009||1,699||discont.||check|
|Canon 50D (⇒ lft | rgt)||90/100 HiRec||HiRec||4.5/5||5/5||4.5/5||2008||1,299||discont.||check|
|Canon 40D (⇒ lft | rgt)||90/100 HiRec||HiRec||4.5/5||reviewed||4.5/5||2007||1,299||discont.||check|
|Canon 30D (⇒ lft | rgt)||87/100 HiRec||HiRec||reviewed||reviewed||-||2006||1,399||discont.||check|
|Canon 350D (⇒ lft | rgt)||80/100||HiRec||reviewed||reviewed||-||2005||899||discont.||check|
|Canon 10D (⇒ lft | rgt)||-||HiRec||-||reviewed||-||2003||1,999||discont.||check|
|Canon 300D (⇒ lft | rgt)||-||HiRec||-||reviewed||-||2003||899||discont.||check|
|Nikon D200 (⇒ lft | rgt)||91/100 HiRec||HiRec||reviewed||5/5||-||2005||1,699||discont.||check|
The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
If you would like to see a different side-by-side camera review, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If the camera you are interested in is not available, please contact me, and I will try to locate and add the respective data to the application.
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