Canon T6 vs Pentax 645D
The Canon EOS Rebel T6 (called Canon 1300D in some regions) and the Pentax 645D are two digital cameras that were announced, respectively, in March 2016 and March 2010. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (T6) and a medium format (645D) sensor. The Canon has a resolution of 17.9 megapixels, whereas the Pentax provides 39.5 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel T6 and the Pentax 645D? 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.
The side-by-side display below illustrates the physical size and weight of the Canon T6 and the Pentax 645D. 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 dimensions 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 Pentax 645D is notably larger (40 percent) than the Canon T6. Moreover, the 645D is substantially heavier (205 percent) than the T6. It is noteworthy in this context that the 645D is splash and dust-proof, while the T6 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Canon T6||129 mm||101 mm||78 mm||485 g||500||n||Mar 2016||449|
|2.||Pentax 645D||156 mm||117 mm||119 mm||1480 g||800||Y||Mar 2010||9,995|
|3.||Canon T7||129 mm||101 mm||78 mm||475 g||500||n||Feb 2018||449|
|4.||Canon T100||129 mm||102 mm||77 mm||436 g||500||n||Feb 2018||399|
|5.||Canon T5||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449|
|6.||Canon SL1||117 mm||91 mm||69 mm||407 g||380||n||Mar 2013||549|
|7.||Canon T5i||133 mm||100 mm||79 mm||580 g||440||n||Mar 2013||649|
|8.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849|
|9.||Canon 1D X||158 mm||168 mm||83 mm||1551 g||1120||Y||Oct 2011||6,799|
|10.||Canon T3||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449|
|11.||Canon T3i||133 mm||100 mm||80 mm||570 g||440||n||Feb 2011||599|
|12.||Canon T2i||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699|
|13.||Canon 1D Mark IV||156 mm||157 mm||80 mm||1230 g||1500||Y||Oct 2009||4,999|
|14.||Canon XS||126 mm||98 mm||65 mm||502 g||500||n||Jun 2008||449|
|15.||Leica S Typ 006||160 mm||120 mm||80 mm||1260 g||..||Y||Sep 2012||21,950|
|16.||Nikon D3S||160 mm||157 mm||88 mm||1240 g||4200||Y||Oct 2009||5,199|
|17.||Pentax 645Z||156 mm||117 mm||123 mm||1550 g||650||Y||Apr 2014||8,499|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. 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 T6 was launched at a markedly lower price (by 96 percent) than the 645D, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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.
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.
Of the two cameras under consideration, the Canon T6 features an APS-C sensor and the Pentax 645D a medium format sensor. The sensor area in the 645D is 337 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.6 and 0.79. The sensor in the T6 has a native 3:2 aspect ratio, while the one in the 645D offers a 4:3 aspect.
With 39.5MP, the 645D offers a higher resolution than the T6 (17.9MP), but the 645D nevertheless has larger individual pixels (pixel pitch of 6.06μm versus 4.31μm for the T6) due to its larger sensor. However, the T6 is a much more recent model (by 6 years) than the 645D, 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 645D has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Pentax 645D implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645D for good quality output (200 dots per inch) amounts to 36.3 x 27.2 inches or 92.3 x 69.1 cm, for very good quality (250 dpi) 29.1 x 21.8 inches or 73.8 x 55.3 cm, and for excellent quality (300 dpi) 24.2 x 18.1 inches or 61.5 x 46.1 cm. The corresponding values for the Canon T6 are 25.9 x 17.3 inches or 65.8 x 43.9 cm for good quality, 20.7 x 13.8 inches or 52.7 x 35.1 cm for very good quality, and 17.3 x 11.5 inches or 43.9 x 29.3 cm for excellent quality prints.
The Canon EOS Rebel T6 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 Pentax 645D are ISO 100 to ISO 1600 (no boost).
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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
| DXO |
|2.||Pentax 645D||Medium Format||39.5||7264||5440||none||24.6||12.6||1262||82|
|9.||Canon 1D X||Full Frame||17.9||5184||3456||1080/30p||23.8||11.8||2786||82|
|13.||Canon 1D Mark IV||APS-H||16.0||4896||3264||1080/30p||22.8||12.0||1320||74|
|15.||Leica S Typ 006||Medium Format||37.5||7500||5000||none||23.9||12.2||824||76|
|16.||Nikon D3S||Full Frame||12.1||4256||2832||720/24p||23.5||12.0||3253||82|
|17.||Pentax 645Z||Medium Format||51.1||8256||6192||1080/60i||26.0||14.7||4505||101|
Many modern cameras cannot only take still pictures, but also record videos. The T6 indeed provides movie recording capabilities, while the 645D does not. The highest resolution format that the T6 can use is 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The T6 and the 645D 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 645D offers a wider field of view (98%) than the one in the T6 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the 645D has a higher magnification (0.78x vs 0.50x), 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 T6, the Pentax 645D, and comparable cameras.
|9.||Canon 1D X||optical||Y||3.2||1040||fixed||n||1/8000s||14.0||n||n|
|13.||Canon 1D Mark IV||optical||Y||3.0||920||fixed||n||1/8000s||10.0||n||n|
|15.||Leica S Typ 006||optical||Y||3.0||922||fixed||n||1/4000s||1.5||n||n|
One difference between the cameras concerns the presence of an on-board flash. The T6 has one, while the 645D does not. While the built-in flash of the T6 is not very powerful, it can at times be useful as a fill-in light.
The Pentax 645D 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.
Concerning the storage of imaging data, both the T6 and the 645D write their files to SDXC cards. The 645D features dual card slots, which can be very useful in case a memory card fails. In contrast, the T6 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 Rebel T6 and Pentax 645D and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|9.||Canon 1D X||Y||mono||-||Y||-||mini||2.0||-||-||-|
|13.||Canon 1D Mark IV||Y||stereo||-||Y||-||mini||2.0||-||-||-|
|15.||Leica S Typ 006||Y||-||-||-||-||mini||2.0||-||-||-|
It is notable that the T6 offers wifi support, while the 645D does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Studio photographers will appreciate that the Pentax 645D (unlike the T6) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the T6 and the 645D have been discontinued, but can regularly be found used on eBay. The 645D was replaced by the Pentax 645Z, while the T6 was followed by the Canon T7. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Pentax websites.
So what is the bottom line? Is the Canon T6 better than the Pentax 645D or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Canon EOS Rebel T6:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Broader imaging potential: Can record not only still images but also 1080/30p movies.
- Faster burst: Shoots at higher frequency (3 vs 1.1 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (129x101mm vs 156x117mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 995g or 67 percent) and hence easier to carry around.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- 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 (96 percent cheaper at launch).
- More modern: Reflects 6 years of technical progress since the 645D launch.
Reasons to prefer the Pentax 645D:
- More detail: Has more megapixels (39.5 vs 17.9MP), which boosts linear resolution by 46%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- More complete view: Has a viewfinder with a larger field of view (98% vs 95%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.50x).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Gets more shots (800 versus 500) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More heavily discounted: Has been around for much longer (launched in March 2010).
If the number of relative strengths (bullet points above) is taken as a guide, the 645D comes out slightly ahead of the T6 (11 : 10 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. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 T6 and the Pentax 645D 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the T6 or the 645D perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). 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.
|1.||Canon T6||4/5||o||73/100||4/5||4/5||Mar 2016||449|
|2.||Pentax 645D||5/5||..||..||..||..||Mar 2010||9,995|
|3.||Canon T7||..||o||..||3.5/5||3.5/5||Feb 2018||449|
|4.||Canon T100||..||o||..||3.5/5||3.5/5||Feb 2018||399|
|5.||Canon T5||3/5||+||..||4/5||4.5/5||Feb 2014||449|
|6.||Canon SL1||4/5||+||78/100||4/5||4/5||Mar 2013||549|
|7.||Canon T5i||..||..||76/100||4.5/5||4.5/5||Mar 2013||649|
|8.||Canon T4i||4/5||+ +||77/100||4.5/5||4.5/5||Jun 2012||849|
|9.||Canon 1D X||5/5||..||..||4.5/5||4.5/5||Oct 2011||6,799|
|10.||Canon T3||..||80/100||69/100||4/5||4.5/5||Feb 2011||449|
|11.||Canon T3i||3/5||o||77/100||4.5/5||4.5/5||Feb 2011||599|
|12.||Canon T2i||..||+ +||77/100||4/5||4.5/5||Feb 2010||699|
|13.||Canon 1D Mark IV||5/5||..||89/100||..||..||Oct 2009||4,999|
|14.||Canon XS||..||82/100||+ +||3.5/5||4.5/5||Jun 2008||449|
|15.||Leica S Typ 006||..||..||..||..||..||Sep 2012||21,950|
|16.||Nikon D3S||5/5||..||89/100||4.5/5||5/5||Oct 2009||5,199|
|17.||Pentax 645Z||5/5||..||..||4.5/5||5/5||Apr 2014||8,499|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, 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. 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? In case you would like to check on the differences and similarities of other camera models, just make a corresponding selection in the search boxes below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
Specifications: Canon T6 vs Pentax 645D
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 T6||Pentax 645D|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Pentax 645 mount lenses|
|Launch Date||March 2016||March 2010|
|Launch Price||USD 449||USD 9,995|
|Sensor Specs||Canon T6||Pentax 645D|
|Sensor Format||APS-C Sensor||Medium Format Sensor|
|Sensor Size||22.3 x 14.9 mm||44.0 x 33.0 mm|
|Sensor Area||332.27 mm2||1452 mm2|
|Sensor Diagonal||26.8 mm||55 mm|
|Sensor Resolution||17.9 Megapixels||39.5 Megapixels|
|Image Resolution||5184 x 3456 pixels||7264 x 5440 pixels|
|Pixel Pitch||4.31 μm||6.06 μm|
|Pixel Density||5.39 MP/cm2||2.72 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/30p Video||no Video|
|ISO Setting||100 - 12,800 ISO||100 - 1,600 ISO|
|ISO Boost||100 - 25,600 ISO||no Enhancement|
|Image Processor||DIGIC 4+||PRIME II|
|DXO Sensor Quality (score)||..||82|
|DXO Color Depth (bits)||..||24.6|
|DXO Dynamic Range (EV)||..||12.6|
|DXO Low Light (ISO)||..||1262|
|Screen Specs||Canon T6||Pentax 645D|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||98%|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||920k dots||921k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Canon T6||Pentax 645D|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||3 shutter flaps/s||1.1 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||50 000 actuations|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Dual card slots|
|UHS card support||no||no|
|Connectivity Specs||Canon T6||Pentax 645D|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||no HDMI|
|Wifi Support||Wifi built-in||no Wifi|
|Near-Field Communication||NFC built-in||no NFC|
|Body Specs||Canon T6||Pentax 645D|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||500 shots per charge||800 shots per charge|
129 x 101 x 78 mm
(5.1 x 4.0 x 3.1 in)
156 x 117 x 119 mm
(6.1 x 4.6 x 4.7 in)
|Camera Weight||485 g (17.1 oz)||1480 g (52.2 oz)|
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