Canon R5 Mark II vs Pentax K-3 III
The Canon EOS R5 Mark II and the Pentax K-3 III are two enthusiast cameras that were announced, respectively, in July 2024 and March 2021. The R5 Mark II is a mirrorless interchangeable lens camera, while the K-3 III is a DSLR. The cameras are based on a full frame (R5 Mark II) and an APS-C (K-3 III) sensor. The Canon has a resolution of 44.8 megapixels, whereas the Pentax provides 25.6 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Check R5 Mark II price at
amazon.com

Check K-3 III price at
amazon.com
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS R5 Mark II and the Pentax K-3 III? 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 physical size and weight of the Canon R5 Mark II and the Pentax K-3 III are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.
The K-3 III can be obtained in two different colors (black, silver), while the R5 Mark II 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 Pentax K-3 III is somewhat larger (4 percent) than the Canon R5 Mark II. Moreover, the K-3 III is markedly heavier (10 percent) than the R5 Mark II. 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.
The power pack in the R5 Mark II 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. 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.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon R5 Mark II | 138 mm | 98 mm | 88 mm | 746 g | 340 | Y | Jul 2024 | EUR 4 799 | amazon.com | |
| 2. | Pentax K-3 III | 135 mm | 104 mm | 74 mm | 820 g | 800 | Y | Mar 2021 | EUR 1 999 | amazon.com | |
| 3. | Canon R1 | 158 mm | 150 mm | 87 mm | 1115 g | 1330 | Y | Jul 2024 | EUR 7 499 | amazon.com | |
| 4. | Canon R5 | 138 mm | 98 mm | 88 mm | 738 g | 320 | Y | Jul 2020 | EUR 4 499 | amazon.com | |
| 5. | Canon R5 C | 142 mm | 101 mm | 111 mm | 770 g | 320 | Y | Jan 2022 | EUR 4 999 | amazon.com | |
| 6. | Canon R6 | 138 mm | 98 mm | 88 mm | 680 g | 360 | Y | Jul 2020 | EUR 2 699 | amazon.com | |
| 7. | Canon R6 Mark II | 138 mm | 98 mm | 88 mm | 670 g | 450 | Y | Nov 2022 | EUR 2 899 | amazon.com | |
| 8. | Fujifilm GFX 50S II | 150 mm | 104 mm | 87 mm | 900 g | 440 | Y | Sep 2021 | EUR 3 999 | amazon.com | |
| 9. | Fujifilm GFX 100S II | 150 mm | 104 mm | 87 mm | 883 g | 530 | Y | May 2024 | EUR 5 499 | amazon.com | |
| 10. | Nikon Z8 | 144 mm | 119 mm | 83 mm | 910 g | 340 | Y | May 2023 | EUR 4 599 | amazon.com | |
| 11. | Panasonic S1R II | 134 mm | 102 mm | 92 mm | 795 g | 350 | Y | May 2025 | EUR 3 599 | amazon.com | |
| 12. | Panasonic S5 | 133 mm | 98 mm | 82 mm | 714 g | 440 | Y | Sep 2020 | EUR 1 999 | amazon.com | |
| 13. | Pentax K-3 | 131 mm | 100 mm | 77 mm | 800 g | 560 | Y | Oct 2013 | EUR 1 299 | ebay.com | |
| 14. | Pentax K-3 II | 131 mm | 100 mm | 77 mm | 800 g | 720 | Y | Apr 2015 | EUR 999 | ebay.com | |
| 15. | Pentax K-70 | 126 mm | 93 mm | 74 mm | 688 g | 410 | Y | Jun 2016 | EUR 699 | ebay.com | |
| 16. | Pentax KP | 132 mm | 101 mm | 76 mm | 703 g | 390 | Y | Jan 2017 | EUR 1 299 | ebay.com | |
| 17. | Sony A1 II | 136 mm | 97 mm | 83 mm | 743 g | 520 | Y | Nov 2024 | EUR 7 499 | 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 obviously take relative prices into account. 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 K-3 III was launched at a markedly lower price (by 54 percent) than the R5 Mark 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.
Sensor comparison
The size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon R5 Mark II features a full frame sensor and the Pentax K-3 III an APS-C sensor. The sensor area in the K-3 III 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.

With 44.8MP, the R5 Mark II offers a higher resolution than the K-3 III (25.6MP), but the R5 Mark II nevertheless has larger individual pixels (pixel pitch of 4.39μm versus 3.76μm for the K-3 III) due to its larger sensor. Moreover, the R5 Mark II is a much more recent model (by 3 years and 3 months) than the K-3 III, 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 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Canon R5 Mark II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the R5 Mark II for good quality output (200 dots per inch) amounts to 41 x 27.3 inches or 104 x 69.4 cm, for very good quality (250 dpi) 32.8 x 21.9 inches or 83.2 x 55.5 cm, and for excellent quality (300 dpi) 27.3 x 18.2 inches or 69.4 x 46.3 cm. The corresponding values for the Pentax K-3 III are 31 x 20.6 inches or 78.6 x 52.4 cm for good quality, 24.8 x 16.5 inches or 62.9 x 41.9 cm for very good quality, and 20.6 x 13.8 inches or 52.4 x 35 cm for excellent quality prints.
The R5 Mark II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the R5 Mark II, the K-3 III has the capacity to capture high quality composite images (YESMP) 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 R5 Mark II has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-102400. The corresponding ISO settings for the Pentax K-3 III are ISO 100 to ISO 160000 (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.

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"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

| Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon R5 Mark II | Full Frame | 44.8 | 8192 | 5464 | 8k/60p | 25.4 | 14.8 | 3332 | 97 | |
| 2. | Pentax K-3 III | APS-C | 25.6 | 6192 | 4128 | 4K/30p | 24.2 | 13.7 | 2083 | 85 | |
| 3. | Canon R1 | Full Frame | 24.0 | 6000 | 4000 | 6K/60p | 25.4 | 14.8 | 3332 | 97 | |
| 4. | Canon R5 | Full Frame | 44.8 | 8192 | 5464 | 8K/30p | 25.3 | 14.6 | 3042 | 95 | |
| 5. | Canon R5 C | Full Frame | 44.8 | 8192 | 5464 | 8k/60p | 25.4 | 14.5 | 3082 | 96 | |
| 6. | Canon R6 | Full Frame | 20.0 | 5472 | 3648 | 4k/60p | 24.2 | 14.3 | 3394 | 90 | |
| 7. | Canon R6 Mark II | Full Frame | 24.0 | 6000 | 4000 | 4k/60p | 25.4 | 14.6 | 3154 | 96 | |
| 8. | Fujifilm GFX 50S II | Medium Format | 51.1 | 8256 | 6192 | 1080/30p | 25.9 | 14.8 | 3456 | 100 | |
| 9. | Fujifilm GFX 100S II | Medium Format | 101.8 | 11648 | 8736 | 4K/30p | 25.9 | 15.1 | 3720 | 101 | |
| 10. | Nikon Z8 | Full Frame | 45.4 | 8256 | 5504 | 8K/30p | 26.3 | 14.2 | 2548 | 98 | |
| 11. | Panasonic S1R II | Full Frame | 44.2 | 8144 | 5424 | 8K/30p | 25.4 | 14.8 | 3406 | 97 | |
| 12. | Panasonic S5 | Full Frame | 24.0 | 6000 | 4000 | 4K/60p | 25.1 | 14.5 | 2697 | 94 | |
| 13. | Pentax K-3 | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.7 | 13.4 | 1216 | 80 | |
| 14. | Pentax K-3 II | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.6 | 13.6 | 1106 | 80 | |
| 15. | Pentax K-70 | APS-C | 24.0 | 6000 | 4000 | 1080/60i | 23.8 | 13.1 | 1639 | 80 | |
| 16. | Pentax KP | APS-C | 24.1 | 6016 | 4000 | 1080/60i | 23.9 | 13.2 | 1699 | 81 | |
| 17. | Sony A1 II | Full Frame | 49.8 | 8640 | 5760 | 8k/30p | 25.4 | 14.8 | 3363 | 97 | |
| 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 R5 Mark II provides a higher video resolution than the K-3 III. It can shoot video footage at 8k/60p, while the Pentax is limited to 4K/30p.
Feature comparison
Beyond body and sensor, cameras can and do differ across a range of features. For example, the R5 Mark II has an electronic viewfinder (5760k dots), while the K-3 III 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 R5 Mark II has a higher magnification than the one of the K-3 III (0.76x vs 0.70x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Canon R5 Mark II and Pentax K-3 III in connection with corresponding information for a sample of similar cameras.

| 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 R5 Mark II | 5760 | Y | 3.2 / 2100 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 2. | Pentax K-3 III | optical | Y | 3.2 / 1620 | fixed | Y | 1/8000s | 12.0/s | n | Y | |
| 3. | Canon R1 | 9440 | Y | 3.2 / 2100 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 4. | Canon R5 | 5760 | Y | 3.2 / 2100 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 5. | Canon R5 C | 5760 | Y | 3.2 / 2100 | swivel | Y | 1/8000s | 12.0/s | n | n | |
| 6. | Canon R6 | 3690 | n | 3.0 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 7. | Canon R6 Mark II | 3690 | n | 3.0 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 8. | Fujifilm GFX 50S II | 3690 | Y | 3.2 / 2360 | full-flex | Y | 1/4000s | 3.0/s | n | Y | |
| 9. | Fujifilm GFX 100S II | 5760 | Y | 3.2 / 2360 | full-flex | Y | 1/4000s | 7.0/s | n | Y | |
| 10. | Nikon Z8 | 3690 | Y | 3.2 / 2089 | full-flex | Y | 1/32000s | 30.0/s | n | Y | |
| 11. | Panasonic S1R II | 5760 | n | 3.2 / 1840 | full-flex | Y | 1/8000s | 9.0/s | n | Y | |
| 12. | Panasonic S5 | 2360 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 7.0/s | n | Y | |
| 13. | Pentax K-3 | optical | Y | 3.2 / 1037 | fixed | n | 1/8000s | 8.3/s | Y | Y | |
| 14. | Pentax K-3 II | optical | Y | 3.2 / 1037 | fixed | n | 1/8000s | 8.3/s | n | Y | |
| 15. | Pentax K-70 | optical | n | 3.0 / 921 | swivel | n | 1/6000s | 6.0/s | Y | Y | |
| 16. | Pentax KP | optical | n | 3.0 / 921 | tilting | n | 1/6000s | 7.0/s | Y | Y | |
| 17. | Sony A1 II | 9437 | n | 3.2 / 2100 | full-flex | Y | 1/8000s | 30.0/s | n | Y | |
| Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. | |||||||||||
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 R5 Mark II 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 Canon R5 Mark II and the Pentax K-3 III both have 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.
The R5 Mark II writes its imaging data to CFexpress (type B) or SDXC cards, while the K-3 III uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. However, while the R5 Mark II supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s) on both slots, the K-3 III supports UHS-II only on its first slot and UHS-I (data transfer speed up to 104 MB/s) on the second one.
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 R5 Mark II and Pentax K-3 III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

| Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon R5 Mark II | Y | mono / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 2. | Pentax K-3 III | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 3. | Canon R1 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 4. | Canon R5 | Y | mono / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 5. | Canon R5 C | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 6. | Canon R6 | Y | mono / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 7. | Canon R6 Mark II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 8. | Fujifilm GFX 50S II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | - | |
| 9. | Fujifilm GFX 100S II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 10. | Nikon Z8 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 11. | Panasonic S1R II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 12. | Panasonic S5 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 13. | Pentax K-3 | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - | |
| 14. | Pentax K-3 II | Y | mono / mono | Y | Y | mini | 3.0 | - | - | - | |
| 15. | Pentax K-70 | Y | stereo / mono | Y | - | mini | 2.0 | Y | - | - | |
| 16. | Pentax KP | Y | stereo / mono | Y | - | - | 2.0 | Y | - | - | |
| 17. | Sony A1 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y |
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Travel and landscape photographers will find it useful that the K-3 III has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the R5 Mark II and the K-3 III are recent models that are part of the current product line-up. The K-3 III replaced the earlier Pentax K-3 II, while the R5 Mark II followed on from the Canon R5. 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 what is the bottom line? Is there a clear favorite between the Canon R5 Mark II and the Pentax K-3 III? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Advantages of the Canon EOS R5 Mark II:
- More detail: Offers more megapixels (44.8 vs 25.6MP) with a 32% higher linear resolution.
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better image quality: Features a larger and more technologically advanced imaging 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 definition movie capture (8k/60p vs 4K/30p).
- 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 0.70x).
- More detailed LCD: Has a higher resolution rear screen (2100k vs 1620k 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 disturbing: Has an electronic shutter option for completely silent shooting.
- 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.
- More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
- More modern: Reflects 3 years and 3 months of technical progress since the K-3 III launch.

Reasons to prefer the Pentax K-3 III:
- 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.
- Longer lasting: Gets more shots (800 versus 340) out of a single battery charge.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- More affordable: Was introduced into a lower priced category (54 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in March 2021).
If the count of relative strengths (bullet points above) is taken as a measure, the R5 Mark II is the clear winner of the match-up (18 : 7 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 R5 Mark II and the Pentax K-3 III 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 incomplete and does no justice, for example, to the way the R5 Mark II or the K-3 III perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
Expert reviews
This is why hands-on reviews by experts are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

| Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon R5 Mark II | .. | .. | .. | 93/100 | .. | .. | Jul 2024 | EUR 4 799 | amazon.com | |
| 2. | Pentax K-3 III | 4/5 | .. | 3/5 | .. | 4.5/5 | .. | Mar 2021 | EUR 1 999 | amazon.com | |
| 3. | Canon R1 | .. | .. | .. | .. | .. | .. | Jul 2024 | EUR 7 499 | amazon.com | |
| 4. | Canon R5 | 4.5/5 | + | 4/5 | 91/100 | 4.5/5 | 4.5/5 | Jul 2020 | EUR 4 499 | amazon.com | |
| 5. | Canon R5 C | .. | + + | .. | .. | .. | .. | Jan 2022 | EUR 4 999 | amazon.com | |
| 6. | Canon R6 | 5/5 | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Jul 2020 | EUR 2 699 | amazon.com | |
| 7. | Canon R6 Mark II | 5/5 | + + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Nov 2022 | EUR 2 899 | amazon.com | |
| 8. | Fujifilm GFX 50S II | 5/5 | .. | 5/5 | 87/100 | .. | 5/5 | Sep 2021 | EUR 3 999 | amazon.com | |
| 9. | Fujifilm GFX 100S II | .. | .. | .. | .. | .. | .. | May 2024 | EUR 5 499 | amazon.com | |
| 10. | Nikon Z8 | 5/5 | .. | 5/5 | 94/100 | 5/5 | 4.5/5 | May 2023 | EUR 4 599 | amazon.com | |
| 11. | Panasonic S1R II | .. | .. | .. | .. | .. | .. | May 2025 | EUR 3 599 | amazon.com | |
| 12. | Panasonic S5 | 4.5/5 | + + | 4.5/5 | 88/100 | 4.5/5 | 4.5/5 | Sep 2020 | EUR 1 999 | amazon.com | |
| 13. | Pentax K-3 | 4/5 | .. | .. | 83/100 | 5/5 | 5/5 | Oct 2013 | EUR 1 299 | ebay.com | |
| 14. | Pentax K-3 II | 4.5/5 | .. | .. | .. | 5/5 | 5/5 | Apr 2015 | EUR 999 | ebay.com | |
| 15. | Pentax K-70 | 4.5/5 | .. | 4/5 | 79/100 | 4.5/5 | 4.5/5 | Jun 2016 | EUR 699 | ebay.com | |
| 16. | Pentax KP | 4/5 | .. | 3/5 | 82/100 | 5/5 | 4.5/5 | Jan 2017 | EUR 1 299 | ebay.com | |
| 17. | Sony A1 II | .. | .. | .. | .. | .. | .. | Nov 2024 | EUR 7 499 | amazon.com | |
| Note: (+ +) 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. A score, therefore, has to be seen in close connection to the price and market introduction time 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, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Check R5 Mark II price at
amazon.com

Check K-3 III price at
amazon.com
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 80D vs Canon R5 Mark II
- Canon R5 Mark II vs Leica X Typ 113
- Canon R5 Mark II vs Nikon P7800
- Canon R5 Mark II vs Panasonic S1R II
- Canon R5 Mark II vs Sony A7S III
- Canon R5 Mark II vs Zeiss ZX1
- Canon SX540 vs Pentax K-3 III
- Nikon A1000 vs Pentax K-3 III
- Nikon D500 vs Pentax K-3 III
- Nikon D610 vs Pentax K-3 III
- Pentax K-3 III vs Ricoh WG-6
- Pentax K-3 vs Pentax K-3 III
Specifications: Canon R5 Mark II vs Pentax K-3 III
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 R5 Mark II | Pentax K-3 III |
|---|---|---|
| Camera Type | Mirrorless system camera | Digital single lens reflex |
| Camera Lens | Canon RF mount lenses | Pentax K mount lenses |
| Launch Date | July 2024 | March 2021 |
| Launch Price | USD 4,299 | USD 1,999 |
| Sensor Specs | Canon R5 Mark II | Pentax K-3 III |
| Sensor Technology | CMOS | CMOS |
| Sensor Format | Full Frame Sensor | APS-C Sensor |
| Sensor Size | 36.0 x 24.0 mm | 23.3 x 15.5 mm |
| Sensor Area | 864 mm2 | 361.15 mm2 |
| Sensor Diagonal | 43.3 mm | 28 mm |
| Crop Factor | 1.0x | 1.5x |
| Sensor Resolution | 44.8 Megapixels | 25.6 Megapixels |
| Image Resolution | 8192 x 5464 pixels | 6192 x 4128 pixels |
| Pixel Pitch | 4.39 μm | 3.76 μm |
| Pixel Density | 5.18 MP/cm2 | 7.08 MP/cm2 |
| Moiré control | Anti-Alias filter | no AA filter |
| Movie Capability | 8k/60p Video | 4K/30p Video |
| ISO Setting | 100 - 51,200 ISO | 100 - 160,000 ISO |
| ISO Boost | 50 - 102,400 ISO | no Enhancement |
| Image Processor | DIGIC X | PRIME V |
| Screen Specs | Canon R5 Mark II | Pentax K-3 III |
| Viewfinder Type | Electronic viewfinder | Optical viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.76x | 0.70x |
| Viewfinder Resolution | 5760k 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 | 1620k dots |
| LCD Attachment | Swivel screen | Fixed screen |
| Touch Input | Touchscreen | Touchscreen |
| Shooting Specs | Canon R5 Mark II | Pentax K-3 III |
| Focus System | On-Sensor Phase-detect | Phase-detect AF |
| Manual Focusing Aid | Focus Peaking | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/8000s | 1/8000s |
| Continuous Shooting | 12 shutter flaps/s | 12 shutter flaps/s |
| Electronic Shutter | up to 1/32000s | no E-Shutter |
| Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
| Image Stabilization | In-body stabilization | In-body stabilization |
| Fill Flash | no On-Board Flash | no On-Board Flash |
| Storage Medium | CFexB or SDXC cards | SDXC cards |
| Single or Dual Card Slots | Dual card slots | Dual card slots |
| UHS card support | Dual UHS-II | Single UHS-II |
| Connectivity Specs | Canon R5 Mark II | Pentax K-3 III |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | PC Sync socket | PC Sync socket |
| USB Connector | USB 3.2 | USB 3.2 |
| HDMI Port | full HDMI | micro HDMI |
| Microphone Port | External MIC port | External MIC port |
| Headphone Socket | Headphone port | Headphone port |
| Wifi Support | Wifi built-in | Wifi built-in |
| Bluetooth Support | Bluetooth built-in | Bluetooth built-in |
| Geotagging | no internal GPS | GPS built-in |
| Body Specs | Canon R5 Mark II | Pentax K-3 III |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Canon LP-E6P | Pentax D-LI90 |
| Battery Life (CIPA) | 340 shots per charge | 800 shots per charge |
| In-Camera Charging | USB charging | no USB charging |
| Body Dimensions |
138 x 98 x 88 mm (5.4 x 3.9 x 3.5 in) |
135 x 104 x 74 mm (5.3 x 4.1 x 2.9 in) |
| Camera Weight | 746 g (26.3 oz) | 820 g (28.9 oz) |

Check R5 Mark II price at
amazon.com

Check K-3 III price at
amazon.com
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

