Canon 20D vs T6i
The Canon EOS 20D and the Canon EOS Rebel T6i (labelled Canon 750D in some countries) are two digital cameras that were revealed to the public, respectively, in August 2004 and February 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The 20D has a resolution of 8.2 megapixels, whereas the T6i provides 24 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 20D||Canon T6i|
|Digital single lens reflex||Digital single lens reflex|
|Canon EF mount lenses||Canon EF mount lenses|
|8.2 MP, APS-C Sensor||24 MP, APS-C Sensor|
|no Video||1080/60p Video|
|ISO 100-1600 (100-3200)||ISO 100-12800 (100-25600)|
|Optical viewfinder||Optical viewfinder|
|1.8" LCD, 118k dots||3.0" LCD, 1040k dots|
|Fixed screen (not touch-sensitive)||Swivel touchscreen|
|5 shutter flaps per second||5 shutter flaps per second|
|700 shots per battery charge||440 shots per battery charge|
|144 x 106 x 72 mm, 770 g||132 x 101 x 78 mm, 555 g|
Body comparison: Canon 20D vs T6i
The side-by-side display below illustrates the physical size and weight of the Canon 20D and the Canon T6i. 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 T6i is notably smaller (13 percent) than the Canon 20D. Moreover, the T6i is markedly lighter (28 percent) than the 20D. In this context, it is worth noting that neither the 20D nor the T6i 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 20D»||5.7 in||4.2 in||2.8 in||27.2 oz||700||n||Aug 2004||1,499||-||Canon 20D|
|Canon T6i«||5.2 in||4.0 in||3.1 in||19.6 oz||440||n||Feb 2015||749||-||Canon T6i|
|Canon 77D« »||5.2 in||3.9 in||3.0 in||19.0 oz||600||n||Feb 2017||899||Canon 77D|
|Canon T7i« »||5.2 in||3.9 in||3.0 in||18.8 oz||600||n||Feb 2017||749||Canon T7i|
|Canon T6s« »||5.2 in||4.0 in||3.1 in||19.9 oz||440||n||Feb 2015||849||-||Canon T6s|
|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 T5i« »||5.2 in||3.9 in||3.1 in||20.5 oz||440||n||Mar 2013||649||-||Canon T5i|
|Canon T4i« »||5.2 in||3.9 in||3.1 in||20.3 oz||440||n||Jun 2012||849||-||Canon T4i|
|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 D200« »||5.8 in||4.4 in||2.9 in||32.5 oz||400||Y||Nov 2005||1,699||-||Nikon D200|
Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The T6i 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.
Sensor comparison: Canon 20D vs T6i
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. 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 tend 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 T6i 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.
Technology-wise, the T6i uses a more advanced image processing engine (DIGIC 6) than the 20D (DIGIC 2), with benefits for noise reduction, color accuracy, and processing speed.
Despite having a slightly smaller sensor, the T6i offers a higher resolution of 24 megapixels, compared with 8.2 MP of the 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 3.72μm versus 6.42μm for the 20D). However, it should be noted that the T6i is much more recent (by 10 years and 5 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 T6i has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during video recording.
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 Rebel T6i are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 100-25600..
For many cameras, data on sensor performance has been reported by DXO Mark. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the T6i has a markedly higher DXO score than the 20D (overall score 9 points higher), which will translate into better image quality. The advantage is based on 0.8 bits higher color depth, 1 EV in additional dynamic range, and 0.4 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Canon 20D»||APS-C||8.2||3504||2336||-||21.9||11.0||721||62||Canon 20D|
|Canon T6i«||APS-C||24.0||6000||4000||1080/60p||22.7||12.0||919||71||Canon T6i|
|Canon 77D« »||APS-C||24.0||6000||4000||1080/60p||23.6||13.3||971||78||Canon 77D|
|Canon T7i« »||APS-C||24.0||6000||4000||1080/60p||-||-||-||-||Canon T7i|
|Canon T6s« »||APS-C||24.0||6000||4000||1080/30p||22.6||12.0||915||70||Canon T6s|
|Canon 7D II« »||APS-C||20.0||5472||3648||1080/60p||22.4||11.8||1082||70||Canon 7D II|
|Canon T5i« »||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||681||61||Canon T5i|
|Canon T4i« »||APS-C||17.9||5184||3456||1080/30p||21.7||11.2||722||62||Canon T4i|
|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||-||21.8||11.4||696||63||Canon 50D|
|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|
|Nikon D200« »||APS-C||10.0||3872||2592||-||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 T6i indeed provides for movie recording, while the 20D does not. The highest resolution format that the T6i can use is 1080/60p.
Feature comparison: Canon 20D vs T6i
Apart from body and sensor, cameras can and do differ across a variety of features. The 20D and the T6i 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 following table reports on some other key feature differences and similarities of the Canon 20D, the Canon T6i, and comparable cameras.
|Canon 20D»||optical||Y||1.8||118||fixed||n||8000||5.0||Y||n||Canon 20D|
|Canon T6i«||optical||n||3.0||1040||swivel||Y||4000||5.0||Y||n||Canon T6i|
|Canon 77D« »||optical||Y||3.0||1040||swivel||Y||4000||6.0||Y||n||Canon 77D|
|Canon T7i« »||optical||n||3.0||1040||swivel||Y||4000||6.0||Y||n||Canon T7i|
|Canon T6s« »||optical||Y||3.0||1040||swivel||Y||4000||5.0||Y||n||Canon T6s|
|Canon 7D II« »||optical||Y||3.0||1040||fixed||n||8000||10.0||Y||n||Canon 7D II|
|Canon T5i« »||optical||n||3.0||1040||swivel||Y||4000||5.0||Y||n||Canon T5i|
|Canon T4i« »||optical||n||3.0||1040||swivel||Y||4000||5.0||Y||n||Canon T4i|
|Canon 60D« »||optical||Y||3.0||1040||swivel||n||8000||5.3||Y||n||Canon 60D|
|Canon 7D« »||optical||Y||3.0||920||fixed||n||8000||8.0||Y||n||Canon 7D|
|Canon 50D« »||optical||Y||3.0||920||fixed||n||8000||6.3||Y||n||Canon 50D|
|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|
|Nikon D200« »||optical||Y||2.5||230||fixed||n||8000||5.0||Y||n||Nikon D200|
One feature that is present on the 20D, but is missing on the T6i is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.The T6i has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 20D does not have a selfie-screen.
The 20D writes its imaging data to Compact Flash cards, while the T6i uses SDXC cards.
Connectivity comparison: Canon 20D vs T6i
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 Rebel T6i and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Canon 20D»||Y||-||-||-||-||-||1.1||-||-||-||Canon 20D|
|Canon T6i«||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon T6i|
|Canon 77D« »||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon 77D|
|Canon T7i« »||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon T7i|
|Canon T6s« »||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-||Canon T6s|
|Canon 7D II« »||Y||stereo||mono||Y||Y||mini||3.0||-||-||-||Canon 7D II|
|Canon T5i« »||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon T5i|
|Canon T4i« »||Y||stereo||mono||Y||-||mini||2.0||-||-||-||Canon T4i|
|Canon 60D« »||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 60D|
|Canon 7D« »||Y||mono||-||Y||-||mini||2.0||-||-||-||Canon 7D|
|Canon 50D« »||Y||-||-||-||-||mini||2.0||-||-||-||Canon 50D|
|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|
|Nikon D200« »||Y||-||-||-||-||-||2.0||-||-||-||Nikon D200|
It is notable that the T6i offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the 20D does not offer wifi capability.
Studio photographers will appreciate that the Canon 20D (unlike the T6i) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the 20D and the T6i have been discontinued, but can regularly be found used on eBay. The 20D was replaced by the Canon 30D, while the T6i was followed by the Canon T7i.
Review summary: Canon 20D vs T6i
So what conclusions can be drawn? Is there a clear favorite between the Canon 20D and the Canon T6i? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Canon EOS 20D:
- Easier setting verification: Features 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 440) on a single battery charge.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More heavily discounted: Has been available for much longer (launched in August 2004).
Reasons to prefer the Canon EOS Rebel T6i:
- More detail: Has more megapixels (24 vs 8.2MP), which boosts linear resolution by 71%.
- Better image quality: Scores markedly higher (9 points) in the DXO overall evaluation.
- More dynamic range: Captures a broader range of light and dark details (1 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (0.4 stops ISO advantage).
- Better jpgs: Has a more modern image processing engine (DIGIC 6 vs DIGIC 2).
- Broader imaging potential: Can capture not only stills but also 1080/60p video.
- 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).
- 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.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- More compact: Is smaller (132x101mm vs 144x106mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 215g or 28 percent) and is thus easier to take along.
- Faster data transfer: Supports a more advanced USB protocol (2.0 vs 1.1).
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced into a lower priced category (50 percent cheaper at launch).
- More modern: Reflects 10 years and 5 months of technical progress since the 20D launch.
If the number of relative strengths (bullet points above) is taken as a guide, the T6i is the clear winner of the contest (19 : 5 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 before making a camera decision.
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 handling experience and imaging performance when actually working with the 20D or the T6i. 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.
Expert reviews: Canon 20D vs T6i
This is where reviews by experts come in. The following table reports the overall rankings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The detailed reviews can be accessed by clicking on the site logo in the table header.
|Canon 20D»||-||HiRec||-||rev||-||Aug 2004||1,499||-||Canon 20D|
|Canon T6i«||-||75/100||4.5/5||4.5/5||4.5/5||Feb 2015||749||-||Canon T6i|
|Canon 77D« »||-||82/100||4.5/5||4.5/5||4/5||Feb 2017||899||Canon 77D|
|Canon T7i« »||-||80/100||4.5/5||4/5||4/5||Feb 2017||749||Canon T7i|
|Canon T6s« »||Rec||77/100||4.5/5||4.5/5||4.5/5||Feb 2015||849||-||Canon T6s|
|Canon 7D II« »||Rec||84/100||4/5||5/5||4.5/5||Sep 2014||1,799||Canon 7D II|
|Canon T5i« »||-||76/100||4.5/5||4.5/5||4.5/5||Mar 2013||649||-||Canon T5i|
|Canon T4i« »||HiRec||77/100||4.5/5||4.5/5||4.5/5||Jun 2012||849||-||Canon T4i|
|Canon 60D« »||Rec||79/100||4/5||5/5||4.5/5||Aug 2010||1,399||-||Canon 60D|
|Canon 7D« »||HiRec||84/100||4.5/5||5/5||4.5/5||Sep 2009||1,699||-||Canon 7D|
|Canon 50D« »||HiRec||HiRec||4.5/5||5/5||4.5/5||Aug 2008||1,299||-||Canon 50D|
|Canon 40D« »||HiRec||HiRec||4.5/5||rev||4.5/5||Aug 2007||1,299||-||Canon 40D|
|Canon 30D« »||HiRec||HiRec||rev||rev||-||Feb 2006||1,399||-||Canon 30D|
|Canon XT« »||80/100||HiRec||rev||rev||-||Feb 2005||899||-||Canon XT|
|Canon 10D« »||-||HiRec||-||rev||-||Feb 2003||1,999||-||Canon 10D|
|Canon Rebel« »||-||HiRec||-||rev||-||Aug 2003||899||-||Canon Rebel|
|Nikon D200« »||HiRec||HiRec||rev||5/5||-||Nov 2005||1,699||-||Nikon D200|
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. Hence, a score should always be seen in the context of the camera's market launch date and its price, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.
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 make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 1Ds vs Pentax 645Z
- Canon M5 vs Fujifilm X-H1
- Canon T5 vs Nikon D750
- Fujifilm X-E3 vs Canon 5D
- Fujifilm X100F vs Canon 760D
- Nikon D3500 vs Canon 350D
- Nikon D850 vs Panasonic G1
- Olympus E-400 vs Fujifilm X100S
- Olympus E-M10 III vs Panasonic TZ200
- Panasonic G80 vs Pentax KP
- Sony A6000 vs Canon 6D
- Sony RX100 V vs Nikon D3400
Specifications: Canon 20D vs Canon T6i
|Camera Model||Canon 20D||Canon T6i|
|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 749|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.5 x 15.0 mm||22.3 x 15.0 mm|
|Sensor Area||337.5 mm2||332.27 mm2|
|Sensor Diagonal||27 mm||26.8 mm|
|Sensor Resolution||8.2 Megapixels||24 Megapixels|
|Image Resolution||3504 x 2336 pixels||6000 x 4000 pixels|
|Pixel Pitch||6.42 μm||3.72 μm|
|Pixel Density||2.43 MP/cm2||7.22 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60p Video|
|ISO Setting||100-1600 ISO||100-12800 ISO|
|ISO Boost||100-3200 ISO||100-25600 ISO|
|Image Processor||DIGIC 2||DIGIC 6|
|DXO Sensor Quality (score)||62||71|
|DXO Color Depth (bits)||21.9||22.7|
|DXO Dynamic Range (EV)||11.0||12.0|
|DXO Low Light (ISO)||721||919|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||95%|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||n/a||Live View|
|Rear LCD Size||1.8 inch||3.0 inch|
|LCD Resolution||118k dots||1040k dots|
|LCD Attachment||Fixed screen||Swivel screen|
|Touch Input||no Touchscreen||Touchscreen|
|Autofocus System||Phase-detect AF||Phase-detect AF|
|Maximum Shutter Speed||1/8000s||1/4000s|
|Continuous Shooting||5 shutter flaps/s||5 shutter flaps/s|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||CF cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 1.1||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Battery Type||BP-511A power pack||LP-E17 power pack|
|Battery Life (CIPA)||700 shots per charge||440 shots per charge|
144 x 106 x 72 mm
(5.7 x 4.2 x 2.8 in)
132 x 101 x 78 mm
(5.2 x 4.0 x 3.1 in)
|Camera Weight||770 g (27.2 oz)||555 g (19.6 oz)|
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