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Canon T3i vs Pentax K-1 II

The Canon EOS Rebel T3i (called Canon 600D in some regions) and the Pentax K-1 II are two digital cameras that were officially introduced, respectively, in February 2011 and February 2018. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (T3i) and a full frame (K-1 II) sensor. The Canon has a resolution of 17.9 megapixels, whereas the Pentax provides 36.2 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Canon T3i
versus
Pentax K-1 II
Canon T3i   Pentax K-1 II
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Pentax K mount lenses
17.9 MP – APS-C sensor 36.2 MP – Full Frame sensor
1080/30p Video 1080/60i Video
ISO 100-6,400 (100 - 12,800) ISO 100-819,200
Optical viewfinder Optical viewfinder
3.0" LCD – 1040k dots 3.0" LCD – 1037k dots
Swivel screen (not touch-sensitive) Fully flexible screen (no touchscreen)
3.7 shutter flaps per second 4.4 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
440 shots per battery charge670 shots per battery charge
133 x 100 x 80 mm, 570 g 137 x 110 x 86 mm, 1010 g
Canon T3i:
Check Ebay offers
Pentax K-1 II:
Check Amazon price

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS Rebel T3i and the Pentax K-1 II? 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.

Body comparison

The side-by-side display below illustrates the physical size and weight of the Canon T3i and the Pentax K-1 II. 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 size dimensions are rounded to the nearest millimeter.

The K-1 II can be obtained in two different colors (black, silver), while the T3i is only available in black.

Size Canon T3i vs Pentax K-1 II
Compare T3i versus K-1 II top
Comparison T3i or K-1 II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax K-1 II is notably larger (13 percent) than the Canon T3i. Moreover, the K-1 II is substantially heavier (77 percent) than the T3i. It is noteworthy in this context that the K-1 II 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.

Concerning battery life, the T3i gets 440 shots out of its LP-E8 battery, while the K-1 II can take 670 images on a single charge of its D-LI90 power pack.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.

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Body Specifications
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon T3i 133 mm 100 mm 80 mm 570 g 440 n Feb 2011 599i
2.
 
Pentax K-1 II 137 mm 110 mm 86 mm 1010 g 670 Y Feb 2018 1,999 i
3.
 
Canon SL2 122 mm 93 mm 70 mm 453 g 650 n Jun 2017 549i
4.
 
Canon T6s 132 mm 101 mm 78 mm 565 g 440 n Feb 2015 649i
5.
 
Canon T5 130 mm 100 mm 78 mm 480 g 500 n Feb 2014 449i
6.
 
Canon SL1 117 mm 91 mm 69 mm 407 g 380 n Mar 2013 549i
7.
 
Canon T5i 133 mm 100 mm 79 mm 580 g 440 n Mar 2013 649i
8.
 
Canon M 109 mm 66 mm 32 mm 298 g 230 n Jul 2012 599i
9.
 
Canon T4i 133 mm 100 mm 79 mm 575 g 440 n Jun 2012 849i
10.
 
Canon T3 130 mm 100 mm 78 mm 495 g 700 n Feb 2011 449i
11.
 
Canon T2i 129 mm 98 mm 62 mm 530 g 440 n Feb 2010 699i
12.
 
Canon T1i 129 mm 98 mm 62 mm 520 g 400 n Mar 2009 799i
13.
 
Olympus E-5 142 mm 117 mm 75 mm 873 g 750 Y Sep 2010 1,699i
14.
 
Panasonic S1R 149 mm 110 mm 97 mm 1016 g 380 Y Feb 2019 3,699 i
15.
 
Panasonic GH5 139 mm 98 mm 87 mm 725 g 410 Y Jan 2017 1,999i
16.
 
Pentax K-1 137 mm 110 mm 86 mm 1010 g 760 Y Feb 2016 1,799i
17.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 Y Sep 2016 3,199 i
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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The T3i was launched at a markedly lower price (by 70 percent) than the K-1 II, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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. 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 T3i features an APS-C sensor and the Pentax K-1 II a full frame sensor. The sensor area in the K-1 II is 160 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.

Canon T3i and Pentax K-1 II sensor measures

With 36.2MP, the K-1 II offers a higher resolution than the T3i (17.9MP), but the K-1 II nevertheless has larger individual pixels (pixel pitch of 4.88μm versus 4.31μm for the T3i) due to its larger sensor. Moreover, the K-1 II is a much more recent model (by 7 years) than the T3i, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the K-1 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax K-1 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-1 II for good quality output (200 dots per inch) amounts to 36.8 x 24.6 inches or 93.5 x 62.4 cm, for very good quality (250 dpi) 29.4 x 19.6 inches or 74.8 x 49.9 cm, and for excellent quality (300 dpi) 24.5 x 16.4 inches or 62.3 x 41.6 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 K-1 II 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 K-1 II are ISO 100 to ISO 819200 (no boost).

T3i versus K-1 II MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon T3i APS-C 17.9 5184 34561080/30p22.111.579365
2.
 
Pentax K-1 II Full Frame 36.2 7360 49121080/60i25.114.0269893
3.
 
Canon SL2 APS-C 24.0 6000 40001080/60p23.613.4104179
4.
 
Canon T6s APS-C 24.0 6000 40001080/30p22.612.091570
5.
 
Canon T5 APS-C 17.9 5184 34561080/30p21.911.372463
6.
 
Canon SL1 APS-C 17.9 5184 34561080/30p21.811.384363
7.
 
Canon T5i APS-C 17.9 5184 34561080/30p21.711.268161
8.
 
Canon M APS-C 17.9 5184 34561080/30p22.111.282765
9.
 
Canon T4i APS-C 17.9 5184 34561080/30p21.711.272262
10.
 
Canon T3 APS-C 12.2 4272 2848720/30p21.911.075562
11.
 
Canon T2i APS-C 17.9 5184 34561080/30p22.111.578466
12.
 
Canon T1i APS-C 15.1 4752 31681080/20p21.711.566363
13.
 
Olympus E-5 Four Thirds 12.2 4032 3024720/30p21.610.551956
14.
 
Panasonic S1R Full Frame 46.7 8368 55844K/60p26.414.13525100
15.
 
Panasonic GH5 Four Thirds 20.2 5184 38884K/60p23.913.080777
16.
 
Pentax K-1 Full Frame 36.2 7360 49121080/60i25.414.6328096
17.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the K-1 II provides a faster frame rate than the T3i. It can shoot movie footage at 1080/60i, while the Canon is limited to 1080/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The T3i and the K-1 II 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 K-1 II 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 K-1 II has a higher magnification (0.70x vs 0.53x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Canon T3i and Pentax K-1 II along with similar information for a selection of comparators.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Canon T3ioptical n3.0 / 1040 swivel n 1/4000s 3.7/s Y n
2.
 
Pentax K-1 IIoptical Y3.2 / 1037 full-flex n 1/8000s 4.4/s n Y
3.
 
Canon SL2optical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
4.
 
Canon T6soptical Y3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
5.
 
Canon T5optical n3.0 / 460 fixed n 1/4000s 3.0/s Y n
6.
 
Canon SL1optical n3.0 / 1040 fixed Y 1/4000s 4.9/s Y n
7.
 
Canon T5ioptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
8.
 
Canon Mnone n3.0 / 1040 fixed Y 1/4000s 4.3/s n n
9.
 
Canon T4ioptical n3.0 / 1040 swivel Y 1/4000s 5.0/s Y n
10.
 
Canon T3optical n2.7 / 230 fixed n 1/4000s 3.0/s Y n
11.
 
Canon T2ioptical n3.0 / 1040 fixed n 1/4000s 3.7/s Y n
12.
 
Canon T1ioptical n3.0 / 920 fixed n 1/4000s 3.4/s Y n
13.
 
Olympus E-5optical Y3.0 / 920 swivel n 1/8000s 5.0/s Y Y
14.
 
Panasonic S1R5760 Y3.2 / 2100 full-flex Y 1/8000s 9.0/s n Y
15.
 
Panasonic GH53680 n3.2 / 1620 swivel Y 1/8000s 12.0/s n Y
16.
 
Pentax K-1optical Y3.2 / 1037 full-flex n 1/8000s 4.4/s n Y
17.
 
Sony A99 II2400 Y3.0 / 1229 full-flex n 1/8000s 12.0/s n Y
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The T3i has one, while the K-1 II does not. While the built-in flash of the T3i is not very powerful, it can at times be useful as a fill-in light.

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 K-1 II does not have a selfie-screen.

The Pentax K-1 II 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 K-1 II write their files to SDXC cards. The K-1 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the T3i only has one slot. The K-1 II 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.

Connectivity comparison

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 K-1 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon T3iYmono / monoY-mini2.0---
2.
 
Pentax K-1 IIYstereo / monoYYmicro2.0Y--
3.
 
Canon SL2Ystereo / monoY-mini2.0YYY
4.
 
Canon T6sYstereo / monoY-mini2.0YY-
5.
 
Canon T5Ymono / mono--mini2.0---
6.
 
Canon SL1Ymono / monoY-mini2.0---
7.
 
Canon T5iYstereo / monoY-mini2.0---
8.
 
Canon MYstereo / monoY-mini2.0---
9.
 
Canon T4iYstereo / monoY-mini2.0---
10.
 
Canon T3Ystereo / mono--mini2.0---
11.
 
Canon T2iYstereo / -Y-mini2.0---
12.
 
Canon T1iYmono / mono--mini2.0---
13.
 
Olympus E-5Ystereo / ---mini2.0---
14.
 
Panasonic S1RYstereo / monoYYfull3.1Y-Y
15.
 
Panasonic GH5Ystereo / monoYYfull3.1Y-Y
16.
 
Pentax K-1Ystereo / monoYYmicro2.0Y--
17.
 
Sony A99 IIYstereo / monoYYmicro2.0YYY

It is notable that the K-1 II 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.

Studio photographers will appreciate that the Pentax K-1 II (unlike the T3i) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the K-1 II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

The K-1 II is a recent model that features in the current product line-up of Pentax. In contrast, the T3i has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the T3i was succeeded by the Canon T4i. 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.

Review summary

So how do things add up? Which of the two cameras – the Canon T3i or the Pentax K-1 II – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Arguments in favor of the Canon EOS Rebel T3i:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • More compact: Is smaller (133x100mm vs 137x110mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 440g or 44 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 (70 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in February 2011).

ilogo

Advantages of the Pentax K-1 II:

  • More detail: Has more megapixels (36.2 vs 17.9MP), which boosts linear resolution by 42%.
  • 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 image quality: Is equipped with a larger and more technologically advanced sensor.
  • Richer colors: The sensor size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
  • Better video: Provides higher movie framerates (1080/60i versus 1080/30p).
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • 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 (0.70x vs 0.53x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (4.4 vs 3.7 flaps/sec) to capture the decisive moment.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Gets more shots (670 versus 440) out of a single battery charge.
  • 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 geotagging: Features an internal GPS sensor to log localization data.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • 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.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 7 years of technical progress since the T3i launch.

If the number of relative strengths (bullet points above) is taken as a guide, the K-1 II is the clear winner of the contest (25 : 7 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.

T3i 07:25 K-1 II

How about other alternatives? Do the specifications of the Canon T3i and the Pentax K-1 II 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the T3i or the K-1 II. 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.

Expert reviews

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], 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.

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Expert Camera Reviews
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Canon T3i3/5o..77/1004.5/54.5/5 Feb 2011 599i
2.
 
Pentax K-1 II....4.5/579/1004.5/54.5/5 Feb 2018 1,999 i
3.
 
Canon SL24/5+ +4/578/1004.5/54.5/5 Jun 2017 549i
4.
 
Canon T6s5/5+..77/1004.5/54.5/5 Feb 2015 649i
5.
 
Canon T53/5+....4/54.5/5 Feb 2014 449i
6.
 
Canon SL14/5+..78/1004/54/5 Mar 2013 549i
7.
 
Canon T5i......76/1004.5/54.5/5 Mar 2013 649i
8.
 
Canon M3/5+....4/54/5 Jul 2012 599i
9.
 
Canon T4i4/5+ +..77/1004.5/54.5/5 Jun 2012 849i
10.
 
Canon T3..80/100..69/1004/54.5/5 Feb 2011 449i
11.
 
Canon T2i..+ +..77/1004/54.5/5 Feb 2010 699i
12.
 
Canon T1i..+ +..74/1004.5/54.5/5 Mar 2009 799i
13.
 
Olympus E-54/5....75/1004/54.5/5 Sep 2010 1,699i
14.
 
Panasonic S1R4.5/5..4.6/589/1004.5/54.5/5 Feb 2019 3,699 i
15.
 
Panasonic GH54.5/5+ +..85/1004.5/55/5 Jan 2017 1,999i
16.
 
Pentax K-15/5....84/1005/55/5 Feb 2016 1,799i
17.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 3,199 i
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. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

Canon T3i:
Check Ebay offers
Pentax K-1 II:
Check Amazon price

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 use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Canon T3i vs Pentax K-1 II

    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 Specifications
    Camera Model Canon T3i Pentax K-1 II
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Canon EF mount lenses Pentax K mount lenses
    Launch Date February 2011 February 2018
    Launch Price USD 599 USD 1,999
    Sensor Specs Canon T3i Pentax K-1 II
    Sensor Technology CMOS CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 22.3 x 14.9 mm 35.9 x 24.0 mm
    Sensor Area 332.27 mm2 861.6 mm2
    Sensor Diagonal 26.8 mm 43.2 mm
    Crop Factor 1.6x 1.0x
    Sensor Resolution 17.9 Megapixels 36.2 Megapixels
    Image Resolution 5184 x 3456 pixels 7360 x 4912 pixels
    Pixel Pitch 4.31 μm 4.88 μm
    Pixel Density 5.39 MP/cm2 4.20 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 K-1 II
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.53x 0.70x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 1040k dots 1037k dots
    LCD Attachment Swivel screen Fully flexible screen
    Shooting Specs Canon T3i Pentax K-1 II
    Focus System Phase-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 3.7 shutter flaps/s 4.4 shutter flaps/s
    Shutter Life Expectancy100 000 actuations300 000 actuations
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-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 UHS-I
    Connectivity Specs Canon T3i Pentax K-1 II
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Geotagging no internal GPS GPS built-in
    Body Specs Canon T3i Pentax K-1 II
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type LP-E8 D-LI90
    Battery Life (CIPA)440 shots per charge670 shots per charge
    Body Dimensions 133 x 100 x 80 mm
    (5.2 x 3.9 x 3.1 in)
    137 x 110 x 86 mm
    (5.4 x 4.3 x 3.4 in)
    Camera Weight 570 g (20.1 oz) 1010 g (35.6 oz)
    Canon T3i:
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    Pentax K-1 II:
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