Canon 100D vs 20D
The Canon EOS 100D (called Canon SL1 in some regions) and the Canon EOS 20D are two digital cameras that were revealed to the public, respectively, in March 2013 and August 2004. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The 100D has a resolution of 17.9 megapixels, whereas the 20D provides 8.2 MP. Read on to find out how these two cameras compare with respect to their body size, their sensors, their features, their input-output connections, and their reception by expert reviewers.
|Canon 100D||Canon 20D|
|Digital single lens reflex||Digital single lens reflex|
|Canon EF mount lenses||Canon EF mount lenses|
|17.9 MP, APS-C Sensor||8.2 MP, APS-C Sensor|
|1080/30p Video||no Video|
|ISO 100-12800 (100-25600)||ISO 100-1600 (100-3200)|
|Optical viewfinder||Optical viewfinder|
|3.0" LCD, 1040k dots||1.8" LCD, 118k dots|
|Fixed touchscreen||Fixed screen (not touch-sensitive)|
|4.9 shutter flaps per second||5 shutter flaps per second|
|380 shots per battery charge||700 shots per battery charge|
|117 x 91 x 69 mm, 407 g||144 x 106 x 72 mm, 770 g|
Body comparison: Canon 100D vs 20D
The physical size and weight of the Canon 100D and the Canon 20D are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.
The 100D can be obtained in two different colors (black, white), while the 20D is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 20D is considerably larger (43 percent) than the Canon 100D. Moreover, the 20D is substantially heavier (89 percent) than the 100D. In this context, it is worth noting that neither the 100D nor the 20D 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 compare the optics available in the Canon EF Lens Catalog.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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 100D»||4.6 in||3.6 in||2.7 in||14.4 oz||380||n||Mar 2013||549||-||Canon 100D|
|Canon 20D«||5.7 in||4.2 in||2.8 in||27.2 oz||700||n||Aug 2004||1,499||-||Canon 20D|
|Canon 4000D« »||5.1 in||4.0 in||3.0 in||15.4 oz||500||n||Feb 2018||399||Canon 4000D|
|Canon 200D« »||4.8 in||3.7 in||2.8 in||16.0 oz||650||n||Jun 2017||549||Canon 200D|
|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 1200D« »||5.1 in||3.9 in||3.1 in||16.9 oz||500||n||Feb 2014||449||-||Canon 1200D|
|Canon 700D« »||5.2 in||3.9 in||3.1 in||20.5 oz||440||n||Mar 2013||649||-||Canon 700D|
|Canon G16« »||4.3 in||3.0 in||1.6 in||12.6 oz||360||n||Aug 2013||549||Canon G16|
|Canon 650D« »||5.2 in||3.9 in||3.1 in||20.3 oz||440||n||Jun 2012||849||-||Canon 650D|
|Canon M« »||4.3 in||2.6 in||1.3 in||10.5 oz||230||n||Jul 2012||599||-||Canon M|
|Canon 600D« »||5.2 in||3.9 in||3.1 in||20.1 oz||440||n||Feb 2011||599||-||Canon 600D|
|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|
|Panasonic G6« »||4.8 in||3.3 in||2.8 in||13.8 oz||340||n||Apr 2013||599||-||Panasonic G6|
Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The 100D was launched at a markedly lower price (by 63 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.
Sensor comparison: Canon 100D vs 20D
The size of the imaging sensor is a crucial determinant 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the 20D is 2 percent bigger. 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.
In terms of chip-set technology, the 100D uses a more advanced image processing engine (DIGIC 5) than the 20D (DIGIC 2), with benefits for noise reduction, color accuracy, and processing speed.
Despite having a slightly smaller sensor, the Canon 100D offers a higher resolution of 17.9 megapixels, compared with 8.2 MP of the Canon 20D. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.31μm versus 6.42μm for the 20D). However, it should be noted that the 100D is much more recent (by 8 years and 7 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.
The 100D has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during video recording.
The Canon EOS 100D has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 100-25600. The corresponding ISO settings for the Canon EOS 20D are ISO 100 to ISO 1600, with the possibility to increase the ISO range to 100-3200..
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Canon 100D»||APS-C||17.9||5184||3456||1080/30p||21.8||11.3||843||63||Canon 100D|
|Canon 20D«||APS-C||8.2||3504||2336||-||21.9||11.0||721||62||Canon 20D|
|Canon 4000D« »||APS-C||17.9||5184||3456||1080/30p||21.9||11.4||695||63||Canon 4000D|
|Canon 200D« »||APS-C||24.0||6000||4000||1080/60p||23.6||13.4||1041||79||Canon 200D|
|Canon 7D II« »||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70||Canon 7D II|
|Canon 1200D« »||APS-C||17.9||5184||3456||1080/30p||21.9||11.3||724||63||Canon 1200D|
|Canon 700D« »||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||681||61||Canon 700D|
|Canon G16« »||1/1.7||12.0||4000||3000||1080/60p||21.0||11.7||230||54||Canon G16|
|Canon 650D« »||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||722||62||Canon 650D|
|Canon M« »||APS-C||17.9||5184||3456||1080/30p||22.1||11.2||827||65||Canon M|
|Canon 600D« »||APS-C||17.9||5184||3456||1080/30p||22.1||11.5||793||65||Canon 600D|
|Canon 40D« »||APS-C||10.1||3888||2592||-||22.1||11.3||703||64||Canon 40D|
|Canon 30D« »||APS-C||8.2||3504||2336||-||21.5||10.8||736||59||Canon 30D|
|Canon XT« »||APS-C||8.0||3456||2304||-||21.8||10.8||637||60||Canon XT|
|Canon 10D« »||APS-C||6.3||3072||2048||-||21.1||10.9||571||57||Canon 10D|
|Canon Rebel« »||APS-C||6.3||3072||2048||-||21.0||10.8||544||55||Canon Rebel|
|Panasonic G6« »||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61||Panasonic G6|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The 100D indeed provides movie recording capabilities, while the 20D does not. The highest resolution format that the 100D can use is 1080/30p.
Feature comparison: Canon 100D vs 20D
Apart from body and sensor, cameras can and do differ across a variety of features. The 100D and the 20D 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 viewfinders of both cameras offer the same field of view (95%), but the viewfinder of the 20D has a higher magnification than the one of the 100D (0.56x vs 0.54x), 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 100D, the Canon 20D, and comparable cameras.
|Canon 100D»||optical||n||3.0||1040||fixed||Y||4000||4.9||Y||n||Canon 100D|
|Canon 20D«||optical||Y||1.8||118||fixed||n||8000||5.0||Y||n||Canon 20D|
|Canon 4000D« »||optical||n||2.7||230||fixed||n||4000||3.0||Y||n||Canon 4000D|
|Canon 200D« »||optical||n||3.0||1040||swivel||Y||4000||5.0||Y||n||Canon 200D|
|Canon 7D II« »||optical||Y||3.0||1040||fixed||n||8000||10.0||Y||n||Canon 7D II|
|Canon 1200D« »||optical||n||3.0||460||fixed||n||4000||3.0||Y||n||Canon 1200D|
|Canon 700D« »||optical||n||3.0||1040||swivel||Y||4000||5.0||Y||n||Canon 700D|
|Canon G16« »||optical||n||3.0||922||fixed||n||4000||2.2||Y||Y||Canon G16|
|Canon 650D« »||optical||n||3.0||1040||swivel||Y||4000||5.0||Y||n||Canon 650D|
|Canon M« »||-||n||3.0||1040||fixed||Y||4000||4.3||n||n||Canon M|
|Canon 600D« »||optical||n||3.0||1040||swivel||n||4000||3.7||Y||n||Canon 600D|
|Canon 40D« »||optical||Y||3.0||230||fixed||n||8000||6.5||Y||n||Canon 40D|
|Canon 30D« »||optical||Y||2.5||230||fixed||n||8000||5.0||Y||n||Canon 30D|
|Canon XT« »||optical||n||1.8||115||fixed||n||4000||3.0||Y||n||Canon XT|
|Canon 10D« »||optical||Y||1.8||118||fixed||n||4000||3.0||Y||n||Canon 10D|
|Canon Rebel« »||optical||n||1.8||118||fixed||n||4000||2.5||Y||n||Canon Rebel|
|Panasonic G6« »||1440||n||3.0||1036||swivel||Y||4000||7.0||Y||n||Panasonic G6|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The 100D has a touchscreen, while the 20D has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
The 100D writes its imaging data to SDXC cards, while the 20D uses Compact Flash cards.
Connectivity comparison: Canon 100D vs 20D
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 100D and Canon EOS 20D and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon 100D»||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 100D|
|Canon 20D«||Y||-||-||-||-||-||1.1||-||-||-||Canon 20D|
|Canon 4000D« »||Y||mono||mono||-||-||mini||2.0||Y||Y||-||Canon 4000D|
|Canon 200D« »||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon 200D|
|Canon 7D II« »||Y||stereo||mono||Y||Y||mini||3.0||-||-||-||Canon 7D II|
|Canon 1200D« »||Y||mono||mono||-||-||mini||2.0||-||-||-||Canon 1200D|
|Canon 700D« »||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon 700D|
|Canon G16« »||Y||stereo||mono||-||-||mini||2.0||Y||-||-||Canon G16|
|Canon 650D« »||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon 650D|
|Canon M« »||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon M|
|Canon 600D« »||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 600D|
|Canon 40D« »||Y||-||-||-||-||-||2.0||-||-||-||Canon 40D|
|Canon 30D« »||Y||-||-||-||-||-||2.0||-||-||-||Canon 30D|
|Canon XT« »||Y||-||-||-||-||-||2.0||-||-||-||Canon XT|
|Canon 10D« »||Y||-||-||-||-||-||1.1||-||-||-||Canon 10D|
|Canon Rebel« »||Y||-||-||-||-||-||1.1||-||-||-||Canon Rebel|
|Panasonic G6« »||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Panasonic G6|
Studio photographers will appreciate that the Canon 20D (unlike the 100D) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the 100D and the 20D have been discontinued, but can regularly be found used on eBay. The 20D was replaced by the Canon 30D, while the 100D was followed by the Canon 200D. Further information on the two cameras, as well as related accessories, can be found on the Canon website.
Review summary: Canon 100D vs 20D
So what conclusions can be drawn? Is there a clear favorite between the Canon 100D and the Canon 20D? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Canon EOS 100D:
- More detail: Offers more megapixels (17.9 vs 8.2MP) with a 48% higher linear resolution.
- Better jpgs: Has a more modern image processing engine (DIGIC 5 vs DIGIC 2).
- Broader imaging potential: Can record not only still images but also 1080/30p movies.
- Better video autofocus: Features on-sensor phase-detection for more confident movie autofocus.
- 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).
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- More compact: Is smaller (117x91mm vs 144x106mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 363g or 47 percent) and hence easier to carry around.
- Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.1).
- More affordable: Was introduced into a lower priced category (63 percent cheaper at launch).
- More modern: Reflects 8 years and 7 months of technical progress since the 20D launch.
Arguments in favor of the Canon EOS 20D:
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.56x vs 0.54x).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
- Longer lasting: Gets more shots (700 versus 380) out of a single battery charge.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More heavily discounted: Has been around for much longer (launched in August 2004).
If the count of individual advantages (bullet points above) is taken as a guide, the 100D is the clear winner of the match-up (12 : 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.
In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the 100D or the 20D. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
Expert reviews: Canon 100D vs 20D
This is why hands-on reviews by experts are important. The table below summarizes the assessments of some of the best known camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog).
|Canon 100D»||+||78/100||4/5||4/5||4/5||Mar 2013||549||-||Canon 100D|
|Canon 20D«||-||++||-||o||-||Aug 2004||1,499||-||Canon 20D|
|Canon 4000D« »||o||-||3.5/5||-||3.5/5||Feb 2018||399||Canon 4000D|
|Canon 200D« »||++||78/100||4.5/5||4.5/5||4.5/5||Jun 2017||549||Canon 200D|
|Canon 7D II« »||+||84/100||4/5||5/5||4.5/5||Sep 2014||1,799||Canon 7D II|
|Canon 1200D« »||+||-||4/5||4/5||4.5/5||Feb 2014||449||-||Canon 1200D|
|Canon 700D« »||-||76/100||4.5/5||4.5/5||4.5/5||Mar 2013||649||-||Canon 700D|
|Canon G16« »||+||-||4.5/5||4.5/5||4.5/5||Aug 2013||549||Canon G16|
|Canon 650D« »||++||77/100||4.5/5||4.5/5||4.5/5||Jun 2012||849||-||Canon 650D|
|Canon M« »||+||-||4/5||3.5/5||4/5||Jul 2012||599||-||Canon M|
|Canon 600D« »||o||77/100||4.5/5||5/5||4.5/5||Feb 2011||599||-||Canon 600D|
|Canon 40D« »||++||++||4.5/5||o||4.5/5||Aug 2007||1,299||-||Canon 40D|
|Canon 30D« »||++||++||o||o||-||Feb 2006||1,399||-||Canon 30D|
|Canon XT« »||80/100||++||o||o||-||Feb 2005||899||-||Canon XT|
|Canon 10D« »||-||++||-||o||-||Feb 2003||1,999||-||Canon 10D|
|Canon Rebel« »||-||++||-||o||-||Aug 2003||899||-||Canon Rebel|
|Panasonic G6« »||++||-||5/5||-||4.5/5||Apr 2013||599||-||Panasonic G6|
|Notes: ++) highly recommended; +) recommended; o) reviewed; -) not available.|
The above review scores should be interpreted 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 comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
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- Canon 7D II vs Canon 1000D
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- Fujifilm X100F vs Panasonic G1
- Nikon D500 vs Panasonic GX8
- Panasonic FZ1000 II vs Sony A7S II
- Panasonic ZS200 vs Panasonic ZS100
- Sony NEX-6 vs Sony RX100
- Sony RX10 IV vs Canon 70D
Specifications: Canon 100D vs Canon 20D
|Camera Model||Canon 100D||Canon 20D|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Canon EF mount lenses|
|Launch Date||March 2013||August 2004|
|Launch Price||USD 549||USD 1499|
|Sensor Specs||Canon 100D||Canon 20D|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.3 x 14.9 mm||22.5 x 14.9 mm|
|Sensor Area||332.27 mm2||337.5 mm2|
|Sensor Diagonal||26.8 mm||27 mm|
|Sensor Resolution||17.9 Megapixels||8.2 Megapixels|
|Image Resolution||5184 x 3456 pixels||3504 x 2336 pixels|
|Pixel Pitch||4.31 μm||6.42 μm|
|Pixel Density||5.39 MP/cm2||2.43 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||no Video|
|ISO Setting||100-12800 ISO||100-1600 ISO|
|ISO Boost||100-25600 ISO||100-3200 ISO|
|Image Processor||DIGIC 5||DIGIC 2|
|DXO Sensor Quality (score)||63||62|
|DXO Color Depth (bits)||21.8||21.9|
|DXO Dynamic Range (EV)||11.3||11.0|
|DXO Low Light (ISO)||843||721|
|Screen Specs||Canon 100D||Canon 20D|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||95%|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View|
|Rear LCD Size||3.0 inch||1.8 inch|
|LCD Resolution||1040k dots||118k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Canon 100D||Canon 20D|
|Autofocus System||Phase-detect AF||Phase-detect AF|
|Maximum Shutter Speed||1/4000s||1/8000s|
|Continuous Shooting||4.9 shutter flaps/s||5 shutter flaps/s|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||CF cards|
|Second Storage Option||Single card slot||Single card slot|
|Connectivity Specs||Canon 100D||Canon 20D|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 1.1|
|HDMI Port||mini HDMI||no HDMI|
|Microphone Port||External MIC port||no MIC socket|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Canon 100D||Canon 20D|
|Battery Type||LP-E12 power pack||BP-511A power pack|
|Battery Life (CIPA)||380 shots per charge||700 shots per charge|
117 x 91 x 69 mm
(4.6 x 3.6 x 2.7 in)
144 x 106 x 72 mm
(5.7 x 4.2 x 2.8 in)
|Camera Weight||407 g (14.4 oz)||770 g (27.2 oz)|
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