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Canon R vs Pentax K-3 II

The Canon EOS R and the Pentax K-3 II are two digital cameras that were revealed to the public, respectively, in September 2018 and April 2015. The Canon R is a mirrorless interchangeable lens camera, while the K-3 II is a DSLR. The cameras are based on a full frame (Canon R) and an APS-C (K-3 II) sensor. The Canon has a resolution of 30.1 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.

Headline Specifications
Canon R
versus
Pentax K-3 II
Canon R   Pentax K-3 II
Mirrorless system camera Digital single lens reflex
Canon RF mount lenses Pentax K mount lenses
30.1 MP – Full Frame sensor 24.1 MP – APS-C sensor
4K/30p Video 1080/60i Video
ISO 100-40,000 (50 - 102,400) ISO 100-51,200
Electronic viewfinder (3690k dots) Optical viewfinder
3.2" LCD – 2100k dots 3.2" LCD – 1037k dots
Swivel touchscreen Fixed screen (not touch-sensitive)
8 shutter flaps per second 8.3 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodyWeathersealed body
370 shots per battery charge720 shots per battery charge
139 x 98 x 84 mm, 660 g 131 x 100 x 77 mm, 800 g
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Check Canon R offers at
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Check K-3 II offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS R and the Pentax K-3 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.

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Body comparison

An illustration of the physical size and weight of the Canon R and the Pentax K-3 II is provided in the side-by-side display below. 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 K-3 II can be obtained in two different colors (black, silver), while the Canon R is only available in black.

Size Canon R vs Pentax K-3 II
Compare Canon R versus K-3 II top
Comparison Canon R or K-3 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-3 II is somewhat smaller (4 percent) than the Canon R. However, the K-3 II is markedly heavier (21 percent) than the Canon R. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

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 Canon R gets 370 shots out of its Canon LP-E6N battery, while the K-3 II can take 720 images on a single charge of its Pentax D-LI90 power pack. The power pack in the Canon R can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

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.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Canon R 139 mm 98 mm 84 mm 660 g 370 Y Sep 2018 EUR 2 499ebay.com
2.
 
Pentax K-3 II 131 mm 100 mm 77 mm 800 g 720 Y Apr 2015 EUR 999ebay.com
3.
 
Canon 6D 145 mm 111 mm 71 mm 770 g 1090 Y Sep 2012 EUR 1 999ebay.com
4.
 
Canon 6D Mark II 144 mm 111 mm 75 mm 765 g 1200 Y Jun 2017 EUR 2 099 amazon.com
5.
 
Canon 80D 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 EUR 1 285ebay.com
6.
 
Canon 90D 141 mm 105 mm 77 mm 701 g 1300 Y Aug 2019 EUR 1 299 amazon.com
7.
 
Canon R6 138 mm 98 mm 88 mm 680 g 360 Y Jul 2020 EUR 2 699 amazon.com
8.
 
Canon RP 133 mm 85 mm 70 mm 485 g 250 n Feb 2019 EUR 1 499 amazon.com
9.
 
Nikon D750 141 mm 113 mm 78 mm 750 g 1230 Y Sep 2014 EUR 2 149ebay.com
10.
 
Nikon Df 144 mm 110 mm 67 mm 760 g 1400 Y Nov 2013 EUR 2 999ebay.com
11.
 
Panasonic GH5s 139 mm 98 mm 87 mm 660 g 440 Y Jan 2018 EUR 2 499 amazon.com
12.
 
Pentax K-3 131 mm 100 mm 77 mm 800 g 560 Y Oct 2013 EUR 1 299ebay.com
13.
 
Pentax K-3 III 135 mm 104 mm 74 mm 820 g 800 Y Mar 2021 EUR 1 999 amazon.com
14.
 
Pentax K-5 131 mm 97 mm 73 mm 760 g 740 Y Sep 2010 EUR 999ebay.com
15.
 
Pentax K-70 126 mm 93 mm 74 mm 688 g 410 Y Jun 2016 EUR 699ebay.com
16.
 
Pentax KP 132 mm 101 mm 76 mm 703 g 390 Y Jan 2017 EUR 1 299ebay.com
17.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 EUR 2 299 amazon.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 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 K-3 II was launched at a markedly lower price (by 52 percent) than the Canon R, 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 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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon R features a full frame sensor and the Pentax K-3 II an APS-C sensor. The sensor area in the K-3 II is 58 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon R and Pentax K-3 II sensor measures

With 30.1MP, the Canon R offers a higher resolution than the K-3 II (24.1MP), but the Canon R nevertheless has larger individual pixels (pixel pitch of 5.36μm versus 3.90μm for the K-3 II) due to its larger sensor. Moreover, the Canon R is a much more recent model (by 3 years and 4 months) than the K-3 II, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the K-3 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Canon R implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the Canon R for good quality output (200 dots per inch) amounts to 33.6 x 22.4 inches or 85.3 x 56.9 cm, for very good quality (250 dpi) 26.9 x 17.9 inches or 68.3 x 45.5 cm, and for excellent quality (300 dpi) 22.4 x 14.9 inches or 56.9 x 37.9 cm. The corresponding values for the Pentax K-3 II are 30.1 x 20 inches or 76.4 x 50.8 cm for good quality, 24.1 x 16 inches or 61.1 x 40.6 cm for very good quality, and 20.1 x 13.3 inches or 50.9 x 33.9 cm for excellent quality prints.

The Canon R has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the Canon R, the K-3 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 R has a native sensitivity range from ISO 100 to ISO 40000, which can be extended to ISO 50-102400. The corresponding ISO settings for the Pentax K-3 II are ISO 100 to ISO 51200 (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.

Canon R versus K-3 II MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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"). Of the two cameras under review, the Canon R has a notably higher overall DXO score than the K-3 II (overall score 9 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.9 bits higher color depth, 0.1 EV of lower dynamic range, and 1.3 stops in additional low light sensitivity. 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
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Canon R Full Frame 30.1 6720 44804K/30p24.513.5274289
2.
 
Pentax K-3 II APS-C 24.1 6016 40001080/60i23.613.6110680
3.
 
Canon 6D Full Frame 20.0 5472 36481080/30p23.812.1234082
4.
 
Canon 6D Mark II Full Frame 26.0 6240 41601080/60p24.411.9286285
5.
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.2113579
6.
 
Canon 90D APS-C 32.3 6960 46404K/30p24.013.5184883
7.
 
Canon R6 Full Frame 20.0 5472 36484k/60p24.214.3339490
8.
 
Canon RP Full Frame 26.0 6240 41604K/30p24.311.9297785
9.
 
Nikon D750 Full Frame 24.2 6016 40161080/60p24.814.5295693
10.
 
Nikon Df Full Frame 16.2 4928 3280none24.613.1327989
11.
 
Panasonic GH5s Four Thirds 9.9 3680 27004K/60p23.112.8115474
12.
 
Pentax K-3 APS-C 24.1 6016 40001080/60i23.713.4121680
13.
 
Pentax K-3 III APS-C 25.6 6192 41284K/30p24.213.7208385
14.
 
Pentax K-5 APS-C 16.1 4928 32641080/25p23.714.1116282
15.
 
Pentax K-70 APS-C 24.0 6000 40001080/60i23.813.1163980
16.
 
Pentax KP APS-C 24.1 6016 40001080/60i23.913.2169981
17.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
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. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the Canon R provides a higher video resolution than the K-3 II. It can shoot video footage at 4K/30p, while the Pentax is limited to 1080/60i.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the Canon R has an electronic viewfinder (3690k dots), while the K-3 II has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the Canon R has a higher magnification than the one of the K-3 II (0.76x vs 0.63x), 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 R, the Pentax K-3 II, and comparable cameras.

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Core Features
  empty 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 R3690 Y3.2 / 2100 swivel Y 1/8000s 8.0/s n n
2.
 
Pentax K-3 IIoptical Y3.2 / 1037 fixed n 1/8000s 8.3/s n Y
3.
 
Canon 6Doptical Y3.0 / 1040 fixed n 1/4000s 4.5/s n n
4.
 
Canon 6D Mark IIoptical Y3.0 / 1040 swivel Y 1/4000s 6.5/s n n
5.
 
Canon 80Doptical Y3.0 / 1040 swivel Y 1/8000s 7.0/s Y n
6.
 
Canon 90Doptical Y3.0 / 1040 swivel Y 1/8000s 11.0/s Y n
7.
 
Canon R63690 n3.0 / 1620 swivel Y 1/8000s 12.0/s n Y
8.
 
Canon RP2360 n3.0 / 1040 swivel Y 1/4000s 5.0/s n n
9.
 
Nikon D750optical Y3.2 / 1229 tilting n 1/4000s 6.0/s Y n
10.
 
Nikon Dfoptical Y3.2 / 921 fixed n 1/4000s 5.5/s n n
11.
 
Panasonic GH5s3680 n3.2 / 1620 swivel Y 1/8000s 12.0/s n n
12.
 
Pentax K-3optical Y3.2 / 1037 fixed n 1/8000s 8.3/s Y Y
13.
 
Pentax K-3 IIIoptical Y3.2 / 1620 fixed Y 1/8000s 12.0/s n Y
14.
 
Pentax K-5optical Y3.0 / 921 fixed n 1/8000s 7.0/s Y Y
15.
 
Pentax K-70optical n3.0 / 921 swivel n 1/6000s 6.0/s Y Y
16.
 
Pentax KPoptical n3.0 / 921 tilting n 1/6000s 7.0/s Y Y
17.
 
Sony A7 III2359 n3.0 / 922 tilting Y 1/8000s 10.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The Canon R has a touchscreen, while the K-3 II has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The Canon R 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-3 II 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 Canon R 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 K-3 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 Canon R and the K-3 II write their files to SDXC cards. The K-3 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the Canon R only has one slot. The Canon R supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the K-3 II can use UHS-I cards (up to 104 MB/s).

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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 R and Pentax K-3 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
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Canon RYstereo / monoYYmini3.1Y-Y
2.
 
Pentax K-3 IIYmono / monoYYmini3.0---
3.
 
Canon 6DYmono / monoY-mini2.0Y--
4.
 
Canon 6D Mark IIYstereo / monoY-mini2.0YYY
5.
 
Canon 80DYstereo / monoYYmini2.0YY-
6.
 
Canon 90DYstereo / monoYYmini2.0Y-Y
7.
 
Canon R6Ymono / monoYYmicro3.2Y-Y
8.
 
Canon RPYstereo / monoYYmicro2.0Y-Y
9.
 
Nikon D750Ystereo / monoYYmini2.0Y--
10.
 
Nikon DfY- / ---mini2.0---
11.
 
Panasonic GH5sYstereo / monoYYfull3.1Y-Y
12.
 
Pentax K-3Ymono / monoYYmini3.0---
13.
 
Pentax K-3 IIIYstereo / monoYYmicro3.2Y-Y
14.
 
Pentax K-5Ystereo / monoY-mini2.0---
15.
 
Pentax K-70Ystereo / monoY-mini2.0Y--
16.
 
Pentax KPYstereo / monoY--2.0Y--
17.
 
Sony A7 IIIYstereo / monoYYmicro3.1YYY

It is notable that the Canon R offers wifi support, while the K-3 II 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 K-3 II (unlike the Canon R) 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-3 II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the Canon R and the K-3 II have been discontinued, but can regularly be found used on ebay. The K-3 II was replaced by the Pentax K-3 III, while the Canon R does not have a direct successor. Further information on the features and operation of the Canon R and K-3 II can be found, respectively, in the Canon R Manual (free pdf) or the online Pentax K-3 II Manual.

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Review summary

So how do things add up? Which of the two cameras – the Canon R or the Pentax K-3 II – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Canon EOS R:

  • More detail: Offers more megapixels (30.1 vs 24.1MP) with a 12% higher linear resolution.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Scores markedly higher (9 points) in the DXO overall assessment.
  • Better low-light sensitivity: Requires less light for good images (1.3 stops ISO advantage).
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60i).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.76x vs 0.63x).
  • More detailed LCD: Has a higher resolution rear screen (2100k vs 1037k dots).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Less heavy: Is lighter (by 140g or 17 percent) and hence easier to carry around.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 3 years and 4 months of technical progress since the K-3 II launch.

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Reasons to prefer the Pentax K-3 II:

  • 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.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Gets more shots (720 versus 370) out of a single battery charge.
  • 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.
  • 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 affordable: Was introduced into a lower priced category (52 percent cheaper at launch).
  • More heavily discounted: Has been around for much longer (launched in April 2015).

If the count of individual advantages (bullet points above) is taken as a guide, the Canon R is the clear winner of the match-up (20 : 11 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.

Canon R 20:11 K-3 II

How about other alternatives? Do the specifications of the Canon R and the Pentax K-3 II place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the Canon R or the K-3 II. 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

This is where reviews by experts come in. 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
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Canon R4/5o4/579/1004.5/54/5 Sep 2018 EUR 2 499ebay.com
2.
 
Pentax K-3 II4.5/5......5/55/5 Apr 2015 EUR 999ebay.com
3.
 
Canon 6D5/5+ +..83/1004.5/54.5/5 Sep 2012 EUR 1 999ebay.com
4.
 
Canon 6D Mark II4/5+4/580/1004.5/54/5 Jun 2017 EUR 2 099 amazon.com
5.
 
Canon 80D4/5+ +4.5/584/1004.5/54.5/5 Feb 2016 EUR 1 285ebay.com
6.
 
Canon 90D4/5+4.5/585/1004.5/54.5/5 Aug 2019 EUR 1 299 amazon.com
7.
 
Canon R65/5+ +4/590/1004.5/55/5 Jul 2020 EUR 2 699 amazon.com
8.
 
Canon RP4/5+4/5..4.5/54/5 Feb 2019 EUR 1 499 amazon.com
9.
 
Nikon D7505/5+ +4/590/1004.5/54.5/5 Sep 2014 EUR 2 149ebay.com
10.
 
Nikon Df4/5....81/1004/54/5 Nov 2013 EUR 2 999ebay.com
11.
 
Panasonic GH5s....4.5/584/1004.5/54.5/5 Jan 2018 EUR 2 499 amazon.com
12.
 
Pentax K-34/5....83/1005/55/5 Oct 2013 EUR 1 299ebay.com
13.
 
Pentax K-3 III4/5..3/5..4.5/5.. Mar 2021 EUR 1 999 amazon.com
14.
 
Pentax K-54/5....83/1005/54.5/5 Sep 2010 EUR 999ebay.com
15.
 
Pentax K-704.5/5..4/579/1004.5/54.5/5 Jun 2016 EUR 699ebay.com
16.
 
Pentax KP4/5..3/582/1005/54.5/5 Jan 2017 EUR 1 299ebay.com
17.
 
Sony A7 III..+ +4.5/589/1005/55/5 Feb 2018 EUR 2 299 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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    Specifications: Canon R vs Pentax K-3 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 R Pentax K-3 II
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Canon RF mount lenses Pentax K mount lenses
    Launch Date September 2018 April 2015
    Launch Price USD 2,299 USD 1,099
    Sensor Specs Canon R Pentax K-3 II
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor APS-C Sensor
    Sensor Size 36.0 x 24.0 mm 23.5 x 15.6 mm
    Sensor Area 864 mm2 366.6 mm2
    Sensor Diagonal 43.3 mm 28.2 mm
    Crop Factor 1.0x 1.5x
    Sensor Resolution 30.1 Megapixels 24.1 Megapixels
    Image Resolution 6720 x 4480 pixels 6016 x 4000 pixels
    Pixel Pitch 5.36 μm 3.90 μm
    Pixel Density 3.48 MP/cm2 6.56 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 4K/30p Video 1080/60i Video
    ISO Setting 100 - 40,000 ISO 100 - 51,200 ISO
    ISO Boost 50 - 102,400 ISO no Enhancement
    Image Processor DIGIC 8 PRIME III
    DXO Sensor Quality (score) 89 80
    DXO Color Depth (bits) 24.5 23.6
    DXO Dynamic Range (EV) 13.5 13.6
    DXO Low Light (ISO) 2742 1106
    Screen Specs Canon R Pentax K-3 II
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.76x 0.63x
    Viewfinder Resolution 3690k dots
    Top-Level Screen Control Panel Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.2inch
    LCD Resolution 2100k dots 1037k dots
    LCD Attachment Swivel screen Fixed screen
    Touch Input Touchscreen no Touchscreen
    Shooting Specs Canon R Pentax K-3 II
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/8000s
    Continuous Shooting 8 shutter flaps/s 8.3 shutter flaps/s
    Shutter Life Expectancy200 000 actuations200 000 actuations
    Electronic ShutterYESno E-Shutter
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support UHS-II UHS-I
    Connectivity Specs Canon R Pentax K-3 II
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 3.1 USB 3.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Headphone Socket Headphone port Headphone port
    Wifi Support Wifi built-in no Wifi
    Bluetooth Support Bluetooth built-in no Bluetooth
    Geotagging no internal GPS GPS built-in
    Body Specs Canon R Pentax K-3 II
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Canon LP-E6N Pentax D-LI90
    Battery Life (CIPA)370 shots per charge720 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 139 x 98 x 84 mm
    (5.5 x 3.9 x 3.3 in)
    131 x 100 x 77 mm
    (5.2 x 3.9 x 3.0 in)
    Camera Weight 660 g (23.3 oz) 800 g (28.2 oz)
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