Canon T3i vs Pentax KP
The Canon EOS Rebel T3i (called Canon 600D in some regions) and the Pentax KP are two digital cameras that were officially introduced, respectively, in February 2011 and January 2017. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C sensor. The Canon has a resolution of 17.9 megapixels, whereas the Pentax provides 24.1 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 T3i and the Pentax KP? 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 T3i and the Pentax KP. 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.
The KP can be obtained in two different colors (black, silver), while the T3i 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 T3i and the Pentax KP are of equal size. However, the KP is markedly heavier (23 percent) than the T3i. It is noteworthy in this context that the KP is splash and dust-proof, while the T3i 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. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Canon T3i||133 mm||100 mm||80 mm||570 g||440||n||Feb 2011||599||ebay.com|
|2.||Pentax KP||132 mm||101 mm||76 mm||703 g||390||Y||Jan 2017||1,099||ebay.com|
|3.||Canon SL2||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549||ebay.com|
|4.||Canon T6s||132 mm||101 mm||78 mm||565 g||440||n||Feb 2015||649||ebay.com|
|5.||Canon T5||130 mm||100 mm||78 mm||480 g||500||n||Feb 2014||449||ebay.com|
|6.||Canon SL1||117 mm||91 mm||69 mm||407 g||380||n||Mar 2013||549||ebay.com|
|7.||Canon T5i||133 mm||100 mm||79 mm||580 g||440||n||Mar 2013||649||ebay.com|
|8.||Canon M||109 mm||66 mm||32 mm||298 g||230||n||Jul 2012||599||ebay.com|
|9.||Canon T4i||133 mm||100 mm||79 mm||575 g||440||n||Jun 2012||849||ebay.com|
|10.||Canon T3||130 mm||100 mm||78 mm||495 g||700||n||Feb 2011||449||ebay.com|
|11.||Canon T2i||129 mm||98 mm||62 mm||530 g||440||n||Feb 2010||699||ebay.com|
|12.||Canon T1i||129 mm||98 mm||62 mm||520 g||400||n||Mar 2009||799||ebay.com|
|13.||Pentax K-70||126 mm||93 mm||74 mm||688 g||410||Y||Jun 2016||649||amazon.com|
|14.||Pentax K-S2||123 mm||91 mm||73 mm||678 g||410||Y||Feb 2015||749||ebay.com|
|15.||Pentax K-3 II||131 mm||100 mm||77 mm||800 g||720||Y||Apr 2015||1,099||ebay.com|
|16.||Pentax K-3||131 mm||100 mm||77 mm||800 g||560||Y||Oct 2013||1,299||ebay.com|
|17.||Pentax K-5 II||131 mm||97 mm||73 mm||760 g||740||Y||Sep 2012||1,099||ebay.com|
|Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The T3i was launched at a markedly lower price (by 45 percent) than the KP, 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units 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.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the KP is 11 percent bigger. As a result of these sensor size differences, the cameras have format factors, respectively, of 1.6 (T3i) and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
With 24.1MP, the KP offers a higher resolution than the T3i (17.9MP), but the KP has smaller individual pixels (pixel pitch of 3.90μm versus 4.31μm for the T3i). Yet, the KP is a much more recent model (by 5 years and 11 months) than the T3i, 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 KP has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Pentax KP implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the KP for good quality output (200 dots per inch) amounts to 30.1 x 20 inches or 76.4 x 50.8 cm, for very good quality (250 dpi) 24.1 x 16 inches or 61.1 x 40.6 cm, and for excellent quality (300 dpi) 20.1 x 13.3 inches or 50.9 x 33.9 cm. The corresponding values for the Canon T3i 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.
Unlike the T3i, the KP has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Canon EOS Rebel T3i has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-12800. The corresponding ISO settings for the Pentax KP are ISO 100 to ISO 819200 (no boost).
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|15.||Pentax K-3 II||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80|
|17.||Pentax K-5 II||APS-C||16.1||4928||3264||1080/25p||23.8||14.1||1235||82|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the KP provides a faster frame rate than the T3i. It can shoot movie footage at 1080/60i, while the Canon is limited to 1080/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. The T3i and the KP 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 KP offers a wider field of view (100%) than the one in the T3i (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the KP has a higher magnification (0.63x vs 0.53x), 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 T3i, the Pentax KP, and comparable cameras.
|1.||Canon T3i||optical||n||3.0 / 1040||swivel||n||1/4000s||3.7/s||Y||n|
|2.||Pentax KP||optical||n||3.0 / 921||tilting||n||1/6000s||7.0/s||Y||Y|
|3.||Canon SL2||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|4.||Canon T6s||optical||Y||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|5.||Canon T5||optical||n||3.0 / 460||fixed||n||1/4000s||3.0/s||Y||n|
|6.||Canon SL1||optical||n||3.0 / 1040||fixed||Y||1/4000s||4.9/s||Y||n|
|7.||Canon T5i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|8.||Canon M||none||n||3.0 / 1040||fixed||Y||1/4000s||4.3/s||n||n|
|9.||Canon T4i||optical||n||3.0 / 1040||swivel||Y||1/4000s||5.0/s||Y||n|
|10.||Canon T3||optical||n||2.7 / 230||fixed||n||1/4000s||3.0/s||Y||n|
|11.||Canon T2i||optical||n||3.0 / 1040||fixed||n||1/4000s||3.7/s||Y||n|
|12.||Canon T1i||optical||n||3.0 / 920||fixed||n||1/4000s||3.4/s||Y||n|
|13.||Pentax K-70||optical||n||3.0 / 921||swivel||n||1/6000s||6.0/s||Y||Y|
|14.||Pentax K-S2||optical||n||3.0 / 921||swivel||n||1/6000s||5.4/s||Y||Y|
|15.||Pentax K-3 II||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3/s||n||Y|
|16.||Pentax K-3||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3/s||Y||Y|
|17.||Pentax K-5 II||optical||Y||3.0 / 921||fixed||n||1/8000s||7.0/s||Y||Y|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that differentiates the KP and the T3i is in-body image stabilization (IBIS). The KP reduces the risk of handshake-induced blur with all attached lenses, while the T3i offers no blur reduction with lenses that themselves do not provide optical image stabilization.The T3i has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the KP does not have a selfie-screen.
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the KP is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The Pentax KP 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 T3i and the KP write their files to SDXC cards. The KP supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the T3i cannot take advantage of Ultra High Speed SD cards.
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 T3i and Pentax KP and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Canon T3i||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|2.||Pentax KP||Y||stereo / mono||Y||-||-||2.0||Y||-||-|
|3.||Canon SL2||Y||stereo / mono||Y||-||mini||2.0||Y||Y||Y|
|4.||Canon T6s||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|5.||Canon T5||Y||mono / mono||-||-||mini||2.0||-||-||-|
|6.||Canon SL1||Y||mono / mono||Y||-||mini||2.0||-||-||-|
|7.||Canon T5i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|8.||Canon M||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|9.||Canon T4i||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|10.||Canon T3||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|11.||Canon T2i||Y||stereo / -||Y||-||mini||2.0||-||-||-|
|12.||Canon T1i||Y||mono / mono||-||-||mini||2.0||-||-||-|
|13.||Pentax K-70||Y||stereo / mono||Y||-||mini||2.0||Y||-||-|
|14.||Pentax K-S2||Y||mono / mono||Y||-||micro||2.0||Y||Y||-|
|15.||Pentax K-3 II||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|16.||Pentax K-3||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|17.||Pentax K-5 II||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
It is notable that the KP offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the T3i does not provide wifi capability.
Both the T3i and the KP have been discontinued, but can regularly be found used on ebay. The T3i was replaced by the Canon T4i, while the KP does not have a direct successor. Further information on the features and operation of the T3i and KP can be found, respectively, in the Canon T3i Manual (free pdf) or the online Pentax KP Manual.
So how do things add up? Which of the two cameras – the Canon T3i or the Pentax KP – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Canon EOS Rebel T3i:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Less heavy: Is lighter (by 133g or 19 percent) and hence easier to carry around.
- Longer lasting: Can take more shots (440 versus 390) on a single battery charge.
- More affordable: Was introduced into a lower priced category (45 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in February 2011).
Arguments in favor of the Pentax KP:
- More detail: Has more megapixels (24.1 vs 17.9MP), which boosts linear resolution by 16%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better video: Provides higher movie framerates (1080/60i versus 1080/30p).
- 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 (0.63x vs 0.53x).
- Faster shutter: Has higher mechanical shutter speed (1/6000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (7 vs 3.7 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- 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.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More modern: Reflects 5 years and 11 months of technical progress since the T3i launch.
If the count of individual advantages (bullet points above) is taken as a guide, the KP is the clear winner of the contest (15 : 8 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 T3i and the Pentax KP 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 technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the T3i and the KP in practical situations. 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 where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], 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 T3i||3/5||o||..||77/100||4.5/5||4.5/5||Feb 2011||599||ebay.com|
|2.||Pentax KP||4/5||..||3/5||82/100||5/5||4.5/5||Jan 2017||1,099||ebay.com|
|3.||Canon SL2||4/5||+ +||4/5||78/100||4.5/5||4.5/5||Jun 2017||549||ebay.com|
|4.||Canon T6s||5/5||+||..||77/100||4.5/5||4.5/5||Feb 2015||649||ebay.com|
|5.||Canon T5||3/5||+||..||..||4/5||4.5/5||Feb 2014||449||ebay.com|
|6.||Canon SL1||4/5||+||..||78/100||4/5||4/5||Mar 2013||549||ebay.com|
|7.||Canon T5i||..||..||..||76/100||4.5/5||4.5/5||Mar 2013||649||ebay.com|
|8.||Canon M||3/5||+||..||..||4/5||4/5||Jul 2012||599||ebay.com|
|9.||Canon T4i||4/5||+ +||..||77/100||4.5/5||4.5/5||Jun 2012||849||ebay.com|
|10.||Canon T3||..||80/100||..||69/100||4/5||4.5/5||Feb 2011||449||ebay.com|
|11.||Canon T2i||..||+ +||..||77/100||4/5||4.5/5||Feb 2010||699||ebay.com|
|12.||Canon T1i||..||+ +||..||74/100||4.5/5||4.5/5||Mar 2009||799||ebay.com|
|13.||Pentax K-70||4.5/5||..||4/5||79/100||4.5/5||4.5/5||Jun 2016||649||amazon.com|
|14.||Pentax K-S2||4.5/5||..||..||..||5/5||4.5/5||Feb 2015||749||ebay.com|
|15.||Pentax K-3 II||4.5/5||..||..||..||5/5||5/5||Apr 2015||1,099||ebay.com|
|16.||Pentax K-3||4/5||..||..||83/100||5/5||5/5||Oct 2013||1,299||ebay.com|
|17.||Pentax K-5 II||5/5||..||..||80/100||5/5||4.5/5||Sep 2012||1,099||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. 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? If you would like to see a different side-by-side camera review, 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.
- Canon M50 Mark II vs Pentax KP
- Canon T3i vs Nikon D1X
- Canon T3i vs Nikon D800
- Canon T3i vs Olympus XZ-2
- Canon T3i vs Panasonic G9
- Canon T3i vs Pentax 645D
- Canon T3i vs Sony H300
- Leica D-LUX 6 vs Pentax KP
- Leica M Typ 240 vs Pentax KP
- Nikon P950 vs Pentax KP
- Olympus E-330 vs Pentax KP
- Olympus E-PL3 vs Pentax KP
Specifications: Canon T3i vs Pentax KP
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 T3i||Pentax KP|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Canon EF mount lenses||Pentax K mount lenses|
|Launch Date||February 2011||January 2017|
|Launch Price||USD 599||USD 1,099|
|Sensor Specs||Canon T3i||Pentax KP|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||22.3 x 14.9 mm||23.5 x 15.6 mm|
|Sensor Area||332.27 mm2||366.6 mm2|
|Sensor Diagonal||26.8 mm||28.2 mm|
|Sensor Resolution||17.9 Megapixels||24.1 Megapixels|
|Image Resolution||5184 x 3456 pixels||6016 x 4000 pixels|
|Pixel Pitch||4.31 μm||3.90 μm|
|Pixel Density||5.39 MP/cm2||6.56 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/30p Video||1080/60i Video|
|ISO Setting||100 - 6,400 ISO||100 - 819,200 ISO|
|ISO Boost||100 - 12,800 ISO||no Enhancement|
|Image Processor||DIGIC 4||PRIME IV|
|DXO Sensor Quality (score)||65||..|
|DXO Color Depth (bits)||22.1||..|
|DXO Dynamic Range (EV)||11.5||..|
|DXO Low Light (ISO)||793||..|
|Screen Specs||Canon T3i||Pentax KP|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||100%|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||921k dots|
|LCD Attachment||Swivel screen||Tilting screen|
|Shooting Specs||Canon T3i||Pentax KP|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/6000s|
|Continuous Shooting||3.7 shutter flaps/s||7 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||100 000 actuations|
|Electronic Shutter||no E-Shutter||up to 1/24000s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Single or Dual Card Slots||Single card slot||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Canon T3i||Pentax KP|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||no HDMI|
|Microphone Port||External MIC port||External MIC port|
|Wifi Support||no Wifi||Wifi built-in|
|Body Specs||Canon T3i||Pentax KP|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||440 shots per charge||390 shots per charge|
133 x 100 x 80 mm
(5.2 x 3.9 x 3.1 in)
132 x 101 x 76 mm
(5.2 x 4.0 x 3.0 in)
|Camera Weight||570 g (20.1 oz)||703 g (24.8 oz)|
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