Canon 20D vs 5DS R
The Canon EOS 20D and the Canon EOS 5DS R are two digital cameras that were officially introduced, respectively, in August 2004 and February 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (20D) and a full frame (5DS R) sensor. The 20D has a resolution of 8.2 megapixels, whereas the 5DS R provides 50.3 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Canon 20D||Canon 5DS R|
|Digital single lens reflex||Digital single lens reflex|
|Canon EF mount lenses||Canon EF mount lenses|
|8.2 MP, APS-C Sensor||50.3 MP, Full Frame Sensor|
|no Video||1080/30p Video|
|ISO 100-1600 (100-3200)||ISO 100-6400 (50-12800)|
|Optical viewfinder||Optical viewfinder|
|1.8" LCD, 118k dots||3.2" LCD, 1040k dots|
|Fixed screen (not touch-sensitive)||Fixed screen (not touch-sensitive)|
|5 shutter flaps per second||5 shutter flaps per second|
|Not weather sealed||Weathersealed body|
|700 shots per battery charge||700 shots per battery charge|
|144 x 106 x 72 mm, 770 g||152 x 116 x 76 mm, 930 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS 20D and the Canon EOS 5DS R? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
An illustration of the physical size and weight of the Canon 20D and the Canon 5DS R is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 5DS R is notably larger (16 percent) than the Canon 20D. Moreover, the 5DS R is markedly heavier (21 percent) than the 20D. It is noteworthy in this context that the 5DS R is splash and dust-proof, while the 20D does not feature any corresponding weather-sealing.
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. A larger imaging sensor (as in the 5DS R) will tend to go along with bigger and heavier lenses, while more compact options are available for the smaller-sensor camera (20D). You can compare the optics available in the Canon EF Lens Catalog.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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 camera comparisons there.
|Canon 20D»||5.7 in||4.2 in||2.8 in||27.2 oz||700||n||Aug 2004||1,499||Canon 20D|
|Canon 5DS R«||6.0 in||4.6 in||3.0 in||32.8 oz||700||Y||Feb 2015||3,699||Canon 5DS R|
|Canon 1D X Mark II« »||6.2 in||6.6 in||3.3 in||54.0 oz||1210||Y||Feb 2016||5,999||Canon 1D X Mark II|
|Canon 5D Mark IV« »||5.9 in||4.6 in||3.0 in||31.4 oz||900||Y||Aug 2016||3,499||Canon 5D Mark IV|
|Canon 5DS« »||6.0 in||4.6 in||3.0 in||32.8 oz||700||Y||Feb 2015||3,699||Canon 5DS|
|Canon 7D II« »||5.9 in||4.4 in||3.1 in||32.1 oz||670||Y||Sep 2014||1,799||Canon 7D II|
|Canon 60D« »||5.7 in||4.2 in||3.1 in||26.6 oz||1100||Y||Aug 2010||1,399||Canon 60D|
|Canon 7D« »||5.8 in||4.4 in||2.9 in||30.3 oz||800||Y||Sep 2009||1,699||Canon 7D|
|Canon 50D« »||5.7 in||4.3 in||2.9 in||29.0 oz||800||Y||Aug 2008||1,299||Canon 50D|
|Canon 40D« »||5.7 in||4.3 in||2.9 in||29.0 oz||750||n||Aug 2007||1,299||Canon 40D|
|Canon 30D« »||5.7 in||4.2 in||2.9 in||27.7 oz||750||n||Feb 2006||1,399||Canon 30D|
|Canon XT« »||5.0 in||3.7 in||2.5 in||19.0 oz||400||n||Feb 2005||899||Canon XT|
|Canon 10D« »||5.9 in||4.2 in||3.0 in||30.0 oz||500||n||Feb 2003||1,999||Canon 10D|
|Canon Rebel« »||5.6 in||3.9 in||2.8 in||22.9 oz||400||n||Aug 2003||899||Canon Rebel|
|Nikon D850« »||5.7 in||4.9 in||3.1 in||35.5 oz||1840||Y||Jul 2017||3,299||Nikon D850|
|Nikon D810« »||5.7 in||4.8 in||3.2 in||34.6 oz||1200||Y||Jun 2014||3,299||Nikon D810|
|Nikon D200« »||5.8 in||4.4 in||2.9 in||32.5 oz||400||Y||Nov 2005||1,699||Nikon D200|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The 20D was launched at a markedly lower price (by 59 percent) than the 5DS R, 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 size of the imaging sensor is a crucial determinant of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon 20D features an APS-C sensor and the Canon 5DS R a full frame sensor. The sensor area in the 5DS R is 156 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
In terms of underlying technology, both cameras are build around CMOS sensors.
With 50.3MP, the 5DS R offers a higher resolution than the 20D (8.2MP), but the 5DS R has smaller individual pixels (pixel pitch of 4.14μm versus 6.42μm for the 20D). Yet, the 5DS R is a much more recent model (by 10 years and 5 months) than the 20D, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the 5DS R has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Canon 5DS R implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 5DS R for good quality output (200 dots per inch) amounts to 43.4 x 29 inch or 110.3 x 73.6 cm, for very good quality (250 dpi) 34.8 x 23.2 inch or 88.3 x 58.8 cm, and for excellent quality (300 dpi) 29 x 19.3 inch or 73.6 x 49 cm. The corresponding values for the Canon 20D are 17.5 x 11.7 inch or 44.5 x 29.7 cm for good quality, 14 x 9.3 inch or 35.6 x 23.7 cm for very good quality, and 11.7 x 7.8 inch or 29.7 x 19.8 cm for excellent quality prints.
The Canon EOS 20D has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Canon EOS 5DS R are ISO 100 to ISO 6400, with the possibility to increase the ISO range to 50-12800.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under consideration, the 5DS R offers substantially better image quality than the 20D (overall score 24 points higher). The advantage is based on 2.7 bits higher color depth, 1.4 EV in additional dynamic range, and 1.7 stops in additional low light sensitivity. 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||APS-C||8.2||3504||2336||none||21.9||11.0||721||62||Canon 20D|
|Canon 5DS R||Full Frame||50.3||8688||5792||1080/30p||24.6||12.4||2308||86||Canon 5DS R|
|Canon 1D X Mark II||Full Frame||20.0||5472||3648||4K/60p||24.1||13.5||3207||88||Canon 1D X Mark II|
|Canon 5D Mark IV||Full Frame||30.1||6720||4480||4K/30p||24.8||13.6||2995||91||Canon 5D Mark IV|
|Canon 5DS||Full Frame||50.3||8688||5792||1080/30p||24.7||12.4||2381||87||Canon 5DS|
|Canon 7D II||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70||Canon 7D II|
|Canon 60D||APS-C||17.9||5184||3456||1080/30p||22.2||11.5||813||66||Canon 60D|
|Canon 7D||APS-C||17.9||5184||3456||1080/30p||22.0||11.7||854||66||Canon 7D|
|Canon 50D||APS-C||15.1||4752||3168||none||21.8||11.4||696||63||Canon 50D|
|Canon 40D||APS-C||10.1||3888||2592||none||22.1||11.3||703||64||Canon 40D|
|Canon 30D||APS-C||8.2||3504||2336||none||21.5||10.8||736||59||Canon 30D|
|Canon XT||APS-C||8.0||3456||2304||none||21.8||10.8||637||60||Canon XT|
|Canon 10D||APS-C||6.3||3072||2048||none||21.1||10.9||571||57||Canon 10D|
|Canon Rebel||APS-C||6.3||3072||2048||none||21.0||10.8||544||55||Canon Rebel|
|Nikon D850||Full Frame||45.4||8256||5504||4K/30p||26.4||14.8||2660||100||Nikon D850|
|Nikon D810||Full Frame||36.2||7360||4912||1080/60p||25.7||14.8||2853||97||Nikon D810|
|Nikon D200||APS-C||10.0||3872||2592||none||22.3||11.5||583||64||Nikon D200|
Many modern cameras are not only capable of taking still images, but can also record movies. The 5DS R indeed provides for movie recording, while the 20D does not. The highest resolution format that the 5DS R can use is 1080/30p.
Beyond body and sensor, cameras can and do differ across a range of features. The 20D and the 5DS R 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 viewfinder in the 5DS R offers a wider field of view (100%) than the one in the 20D (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the 5DS R has a higher magnification (0.71x vs 0.56x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Canon 20D, the Canon 5DS R, and comparable cameras.
|Canon 20D||optical||Y||1.8||118||fixed||n||1/8000s||5.0||Y||n||Canon 20D|
|Canon 5DS R||optical||Y||3.2||1040||fixed||n||1/8000s||5.0||n||n||Canon 5DS R|
|Canon 1D X Mark II||optical||Y||3.2||1620||fixed||Y||1/8000s||16.0||n||n||Canon 1D X Mark II|
|Canon 5D Mark IV||optical||Y||3.2||1620||fixed||Y||1/8000s||7.0||n||n||Canon 5D Mark IV|
|Canon 5DS||optical||Y||3.2||1040||fixed||n||1/8000s||5.0||n||n||Canon 5DS|
|Canon 7D II||optical||Y||3.0||1040||fixed||n||1/8000s||10.0||Y||n||Canon 7D II|
|Canon 60D||optical||Y||3.0||1040||swivel||n||1/8000s||5.3||Y||n||Canon 60D|
|Canon 7D||optical||Y||3.0||920||fixed||n||1/8000s||8.0||Y||n||Canon 7D|
|Canon 50D||optical||Y||3.0||920||fixed||n||1/8000s||6.3||Y||n||Canon 50D|
|Canon 40D||optical||Y||3.0||230||fixed||n||1/8000s||6.5||Y||n||Canon 40D|
|Canon 30D||optical||Y||2.5||230||fixed||n||1/8000s||5.0||Y||n||Canon 30D|
|Canon XT||optical||n||1.8||115||fixed||n||1/4000s||3.0||Y||n||Canon XT|
|Canon 10D||optical||Y||1.8||118||fixed||n||1/4000s||3.0||Y||n||Canon 10D|
|Canon Rebel||optical||n||1.8||118||fixed||n||1/4000s||2.5||Y||n||Canon Rebel|
|Nikon D850||optical||Y||3.2||2359||tilting||Y||1/8000s||9.0||n||n||Nikon D850|
|Nikon D810||optical||Y||3.2||1229||fixed||n||1/8000s||5.0||Y||n||Nikon D810|
|Nikon D200||optical||Y||2.5||230||fixed||n||1/8000s||5.0||Y||n||Nikon D200|
One difference between the cameras concerns the presence of an on-board flash. The 20D has one, while the 5DS R does not. While the built-in flash of the 20D is not very powerful, it can at times be useful as a fill-in light.
The Canon 5DS R has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
The 20D writes its imaging data to Compact Flash cards, while the 5DS R uses Compact Flash or SDXC cards. The 5DS R features dual card slots, which can be very useful in case a memory card fails. In contrast, the 20D only has one slot.
For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Canon EOS 20D and Canon EOS 5DS R and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon 20D||Y||none||none||-||-||none||1.1||-||-||-||Canon 20D|
|Canon 5DS R||Y||mono||mono||Y||-||mini||3.0||-||-||-||Canon 5DS R|
|Canon 1D X Mark II||Y||mono||mono||Y||Y||mini||3.0||-||-||-||Canon 1D X Mark II|
|Canon 5D Mark IV||Y||mono||mono||Y||Y||mini||3.0||Y||Y||-||Canon 5D Mark IV|
|Canon 5DS||Y||mono||mono||Y||-||mini||3.0||-||-||-||Canon 5DS|
|Canon 7D II||Y||stereo||mono||Y||Y||mini||3.0||-||-||-||Canon 7D II|
|Canon 60D||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 60D|
|Canon 7D||Y||mono||none||Y||-||mini||2.0||-||-||-||Canon 7D|
|Canon 50D||Y||none||none||-||-||mini||2.0||-||-||-||Canon 50D|
|Canon 40D||Y||none||none||-||-||none||2.0||-||-||-||Canon 40D|
|Canon 30D||Y||none||none||-||-||none||2.0||-||-||-||Canon 30D|
|Canon XT||Y||none||none||-||-||none||2.0||-||-||-||Canon XT|
|Canon 10D||Y||none||none||-||-||none||1.1||-||-||-||Canon 10D|
|Canon Rebel||Y||none||none||-||-||none||1.1||-||-||-||Canon Rebel|
|Nikon D850||Y||stereo||mono||Y||Y||mini||3.0||Y||Y||Y||Nikon D850|
|Nikon D810||Y||stereo||mono||Y||Y||mini||3.0||Y||-||-||Nikon D810|
|Nikon D200||Y||none||none||-||-||none||2.0||-||-||-||Nikon D200|
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
The 5DS R is a recent model that features in the current product line-up of Canon. 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. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon website.
So what is the bottom line? Is the Canon 20D better than the Canon 5DS R or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Canon EOS 20D:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More compact: Is smaller (144x106mm vs 152x116mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 160g or 17 percent) and hence easier to carry around.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (59 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in August 2004).
Arguments in favor of the Canon EOS 5DS R:
- More detail: Has more megapixels (50.3 vs 8.2MP), which boosts linear resolution by 148%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (24 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2.7 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (1.4 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.7 stops ISO advantage).
- Broader imaging potential: Can capture not only stills but also 1080/30p video.
- More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.56x).
- Larger screen: Has a bigger rear LCD (3.2" vs 1.8") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 118k dots).
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Faster data transfer: Supports a more advanced USB protocol (3.0 vs 1.1).
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More modern: Reflects 10 years and 5 months of technical progress since the 20D launch.
If the count of relative strengths (bullet points above) is taken as a measure, the 5DS R is the clear winner of the contest (16 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Canon 20D and the Canon 5DS R place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the 20D and the 5DS R in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.
This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.
The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
Other camera comparisons
Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 20D vs Canon 5D
- Canon 20D vs Canon Rebel
- Canon 20D vs Panasonic GH4
- Canon 20D vs Panasonic LX100
- Canon 20D vs Panasonic LX5
- Canon 20D vs Panasonic ZS80
- Canon 20D vs Sony NEX-5R
- Canon 5DS R vs Canon G16
- Canon 5DS R vs Canon G7 X
- Canon 5DS R vs Canon T6i
- Canon 5DS R vs Nikon P1000
- Canon 5DS R vs Panasonic ZS200
Specifications: Canon 20D vs Canon 5DS R
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
|Camera Model||Canon 20D||Canon 5DS R|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Canon EF mount lenses|
|Launch Date||August 2004||February 2015|
|Launch Price||USD 1499||USD 3699|
|Sensor Specs||Canon 20D||Canon 5DS R|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||22.5 x 15.0 mm||36.0 x 24.0 mm|
|Sensor Area||337.5 mm2||864 mm2|
|Sensor Diagonal||27 mm||43.3 mm|
|Sensor Resolution||8.2 Megapixels||50.3 Megapixels|
|Image Resolution||3504 x 2336 pixels||8688 x 5792 pixels|
|Pixel Pitch||6.42 μm||4.14 μm|
|Pixel Density||2.43 MP/cm2||5.82 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||no Video||1080/30p Video|
|ISO Setting||100-1600 ISO||100-6400 ISO|
|ISO Boost||100-3200 ISO||50-12800 ISO|
|Image Processor||DIGIC 2||DIGIC 6 (Dual)|
|DXO Sensor Quality (score)||62||86|
|DXO Color Depth (bits)||21.9||24.6|
|DXO Dynamic Range (EV)||11.0||12.4|
|DXO Low Light (ISO)||721||2308|
|Screen Specs||Canon 20D||Canon 5DS R|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||100%|
|Top-Level Screen||Control Panel||Control Panel|
|LCD Framing||Live View|
|Rear LCD Size||1.8 inch||3.2 inch|
|LCD Resolution||118k dots||1040k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon 20D||Canon 5DS R|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||5 shutter flaps/s||5 shutter flaps/s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||CF cards||CF or SDXC cards|
|Second Storage Option||Single card slot||Dual card slots|
|Connectivity Specs||Canon 20D||Canon 5DS R|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 1.1||USB 3.0|
|HDMI Port||no HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 20D||Canon 5DS R|
|Environmental Sealing||Not weather sealed||Weathersealed body|
|Battery Life (CIPA)||700 shots per charge||700 shots per charge|
144 x 106 x 72 mm
(5.7 x 4.2 x 2.8 in)
152 x 116 x 76 mm
(6.0 x 4.6 x 3.0 in)
|Camera Weight||770 g (27.2 oz)||930 g (32.8 oz)|
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