Canon R8 vs Pentax K-3 III
The Canon EOS R8 and the Pentax K-3 III are two digital cameras that were officially introduced, respectively, in February 2023 and March 2021. The R8 is a mirrorless interchangeable lens camera, while the K-3 III is a DSLR. The cameras are based on a full frame (R8) and an APS-C (K-3 III) sensor. The Canon has a resolution of 24 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS R8 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
An illustration of the physical size and weight of the Canon R8 and the Pentax K-3 III is provided 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 size dimensions are rounded to the nearest millimeter.
The K-3 III can be obtained in two different colors (black, silver), while the R8 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 notably larger (23 percent) than the Canon R8. Moreover, the K-3 III is substantially heavier (78 percent) than the R8. It is noteworthy in this context that the K-3 III is splash and dust-proof, while the R8 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 R8 gets 220 shots out of its Canon LP-E17 battery, while the K-3 III can take 800 images on a single charge of its Pentax D-LI90 power pack. The power pack in the R8 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
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.
Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Canon R8 | 133 mm | 86 mm | 70 mm | 461 g | 220 | n | Feb 2023 | EUR 1 799 | 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 77D | 131 mm | 100 mm | 76 mm | 540 g | 600 | n | Feb 2017 | EUR 899 | ebay.com | |
4. | Canon 200D | 122 mm | 93 mm | 70 mm | 453 g | 650 | n | Jun 2017 | EUR 599 | ebay.com | |
5. | Canon 2000D | 129 mm | 101 mm | 78 mm | 475 g | 500 | n | Feb 2018 | EUR 499 | amazon.com | |
6. | Canon G1 X Mark III | 115 mm | 78 mm | 51 mm | 399 g | 200 | Y | Oct 2017 | EUR 1 199 | ebay.com | |
7. | Canon M5 | 116 mm | 89 mm | 61 mm | 427 g | 295 | n | Sep 2016 | EUR 1 129 | ebay.com | |
8. | Canon M6 | 112 mm | 68 mm | 45 mm | 390 g | 295 | n | Feb 2017 | EUR 799 | ebay.com | |
9. | Canon M50 | 116 mm | 88 mm | 59 mm | 390 g | 235 | n | Feb 2018 | EUR 779 | ebay.com | |
10. | Canon R10 | 123 mm | 88 mm | 83 mm | 429 g | 450 | n | May 2022 | EUR 979 | amazon.com | |
11. | Canon RP | 133 mm | 85 mm | 70 mm | 485 g | 250 | n | Feb 2019 | EUR 1 499 | 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 NEX-7 | 120 mm | 67 mm | 43 mm | 400 g | 430 | n | Aug 2011 | EUR 1 199 | ebay.com | |
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders. | |||||||||||
The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The R8 was launched at a somewhat lower price (by 25 percent) than the K-3 III, which makes it more attractive for photographers on a tight budget. 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 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 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. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon R8 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.
Despite having a smaller sensor, the K-3 III offers a slightly higher resolution of 25.6 megapixels, compared with 24 MP of the R8. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.76μm versus 5.98μm for the R8). Moreover, it should be noted that the R8 is a somewhat more recent model (by 1 year and 10 months) than the K-3 III, and its sensor might 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 R8 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the R8, 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 R8 has a native sensitivity range from ISO 100 to ISO 102400, which can be extended to ISO 100-204800. 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 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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Canon R8 | Full Frame | 24.0 | 6000 | 4000 | 4k/60p | 24.5 | 14.7 | 3295 | 93 | |
2. | Pentax K-3 III | APS-C | 25.6 | 6192 | 4128 | 4K/30p | 24.2 | 13.7 | 2083 | 85 | |
3. | Canon 77D | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.6 | 13.3 | 971 | 78 | |
4. | Canon 200D | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.6 | 13.4 | 1041 | 79 | |
5. | Canon 2000D | APS-C | 24.0 | 6000 | 4000 | 1080/30p | 22.6 | 11.9 | 1009 | 71 | |
6. | Canon G1 X Mark III | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.8 | 13.2 | 1649 | 81 | |
7. | Canon M5 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.4 | 12.4 | 1262 | 77 | |
8. | Canon M6 | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.4 | 12.6 | 1317 | 78 | |
9. | Canon M50 | APS-C | 24.0 | 6000 | 4000 | 4K/24p | 23.8 | 13.3 | 1684 | 81 | |
10. | Canon R10 | APS-C | 24.0 | 6000 | 4000 | 4k/60p | 24.1 | 13.8 | 2085 | 84 | |
11. | Canon RP | Full Frame | 26.0 | 6240 | 4160 | 4K/30p | 24.3 | 11.9 | 2977 | 85 | |
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 NEX-7 | APS-C | 24.0 | 6000 | 4000 | 1080/60i | 24.1 | 13.4 | 1016 | 81 | |
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 also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the R8 provides a higher frame rate than the K-3 III. It can shoot video footage at 4k/60p, while the Pentax is limited to 4K/30p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a range of features. For example, the R8 has an electronic viewfinder (2360k 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%), as well as the same magnification (0.70x). The table below summarizes some of the other core capabilities of the Canon R8 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 R8 | 2360 | n | 3.0 / 1620 | swivel | Y | 1/4000s | 6.0/s | n | n | |
2. | Pentax K-3 III | optical | Y | 3.2 / 1620 | fixed | Y | 1/8000s | 12.0/s | n | Y | |
3. | Canon 77D | optical | Y | 3.0 / 1040 | swivel | Y | 1/4000s | 6.0/s | Y | n | |
4. | Canon 200D | optical | n | 3.0 / 1040 | swivel | Y | 1/4000s | 5.0/s | Y | n | |
5. | Canon 2000D | optical | n | 3.0 / 920 | fixed | n | 1/4000s | 3.0/s | Y | n | |
6. | Canon G1 X Mark III | 2360 | n | 3.0 / 1040 | swivel | Y | 1/2000s | 9.0/s | Y | Y | |
7. | Canon M5 | 2360 | n | 3.2 / 1620 | tilting | Y | 1/4000s | 9.0/s | Y | n | |
8. | Canon M6 | optional | n | 3.0 / 1040 | tilting | Y | 1/4000s | 9.0/s | Y | n | |
9. | Canon M50 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/4000s | 10.0/s | Y | n | |
10. | Canon R10 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 15.0/s | Y | n | |
11. | Canon RP | 2360 | n | 3.0 / 1040 | swivel | Y | 1/4000s | 5.0/s | n | n | |
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 NEX-7 | 2359 | n | 3.0 / 921 | tilting | n | 1/4000s | 10.0/s | Y | n | |
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. |
One feature that differentiates the K-3 III and the R8 is in-body image stabilization (IBIS). The K-3 III reduces the risk of handshake-induced blur with all attached lenses, while the R8 offers no blur reduction with lenses that themselves do not provide optical image stabilization.
The R8 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 III 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 R8 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 R8 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.
Concerning the storage of imaging data, both the R8 and the K-3 III write their files to SDXC cards. The K-3 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the R8 only has one slot. Both the R8 and the K-3 III support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 MB/s (the second slot of the K-3 III only offers slower UHS-I transfer rates, though).
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 R8 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 R8 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
2. | Pentax K-3 III | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
3. | Canon 77D | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
4. | Canon 200D | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
5. | Canon 2000D | Y | mono / mono | - | - | mini | 2.0 | Y | Y | - | |
6. | Canon G1 X Mark III | Y | stereo / mono | - | - | micro | 2.0 | Y | Y | Y | |
7. | Canon M5 | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
8. | Canon M6 | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
9. | Canon M50 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
10. | Canon R10 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
11. | Canon RP | Y | stereo / mono | Y | Y | micro | 2.0 | 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 NEX-7 | Y | stereo / mono | Y | - | mini | 2.0 | - | - | - |
Studio photographers will appreciate that the Pentax K-3 III (unlike the R8) 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 III has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the R8 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 R8 does not have a direct predecessor. Further information on the features and operation of the R8 and K-3 III can be found, respectively, in the Canon R8 Manual (free pdf) or the online Pentax K-3 III Manual.
Review summary
So what conclusions can be drawn? Which of the two cameras – the Canon R8 or the Pentax K-3 III – 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.
Reasons to prefer the Canon EOS R8:
- 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 movie framerates (4k/60p versus 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.
- 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.
- More compact: Is smaller (133x86mm vs 135x104mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 359g or 44 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.
- More affordable: Was introduced into a lower priced segment (25 percent cheaper at launch).
- More modern: Is somewhat more recent (announced 1 year and 10 months after the K-3 III).
Advantages of 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.
- 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 (12 vs 6 flaps/sec) to capture the decisive moment.
- Longer lasting: Gets more shots (800 versus 220) 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.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More heavily discounted: Has been on the market for longer (launched in March 2021).
If the count of relative strengths (bullet points above) is taken as a measure, the R8 emerges as the winner of the contest (17 : 14 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 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 R8 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 comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the R8 or the K-3 III. 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 where reviews by experts come in. 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 R8 | 4.5/5 | + + | 4.5/5 | 87/100 | 4/5 | 4.5/5 | Feb 2023 | EUR 1 799 | amazon.com | |
2. | Pentax K-3 III | 4/5 | .. | 3/5 | .. | 4.5/5 | .. | Mar 2021 | EUR 1 999 | amazon.com | |
3. | Canon 77D | 4.5/5 | .. | 4/5 | 82/100 | 4.5/5 | 4/5 | Feb 2017 | EUR 899 | ebay.com | |
4. | Canon 200D | 4/5 | + + | 4/5 | 78/100 | 4.5/5 | 4.5/5 | Jun 2017 | EUR 599 | ebay.com | |
5. | Canon 2000D | 3/5 | o | 3.5/5 | .. | 3.5/5 | 3.5/5 | Feb 2018 | EUR 499 | amazon.com | |
6. | Canon G1 X Mark III | 5/5 | + | 4/5 | 79/100 | 4.5/5 | 4.5/5 | Oct 2017 | EUR 1 199 | ebay.com | |
7. | Canon M5 | 4/5 | + | 4/5 | 82/100 | 4/5 | 4/5 | Sep 2016 | EUR 1 129 | ebay.com | |
8. | Canon M6 | .. | .. | .. | 80/100 | 4/5 | 4/5 | Feb 2017 | EUR 799 | ebay.com | |
9. | Canon M50 | .. | + | 4/5 | 79/100 | .. | 3.5/5 | Feb 2018 | EUR 779 | ebay.com | |
10. | Canon R10 | 4/5 | .. | 4.5/5 | 87/100 | 4/5 | 4.5/5 | May 2022 | EUR 979 | amazon.com | |
11. | Canon RP | 4/5 | + | 4/5 | .. | 4.5/5 | 4/5 | Feb 2019 | EUR 1 499 | 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 NEX-7 | 5/5 | + + | .. | 81/100 | 4.5/5 | 5/5 | Aug 2011 | EUR 1 199 | ebay.com | |
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. |
The above review scores should be interpreted 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 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.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 1D vs Pentax K-3 III
- Canon 77D vs Canon R8
- Canon R5 vs Pentax K-3 III
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- Canon R8 vs Contax N Digital
- Canon R8 vs Nikon D7200
- Canon R8 vs Panasonic GX8
- Canon R8 vs Panasonic LX15
- Fujifilm GFX 50R vs Pentax K-3 III
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- OM System OM-5 vs Pentax K-3 III
- Pentax K-3 III vs Sony ZV-1
Specifications: Canon R8 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 R8 | 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 | February 2023 | March 2021 |
Launch Price | USD 1,499 | USD 1,999 |
Sensor Specs | Canon R8 | Pentax K-3 III |
Sensor Technology | CMOS | CMOS |
Sensor Format | Full Frame Sensor | APS-C Sensor |
Sensor Size | 35.9 x 23.9 mm | 23.3 x 15.5 mm |
Sensor Area | 858.01 mm2 | 361.15 mm2 |
Sensor Diagonal | 43.1 mm | 28 mm |
Crop Factor | 1.0x | 1.5x |
Sensor Resolution | 24 Megapixels | 25.6 Megapixels |
Image Resolution | 6000 x 4000 pixels | 6192 x 4128 pixels |
Pixel Pitch | 5.98 μm | 3.76 μm |
Pixel Density | 2.80 MP/cm2 | 7.08 MP/cm2 |
Moiré control | Anti-Alias filter | no AA filter |
Movie Capability | 4k/60p Video | 4K/30p Video |
ISO Setting | 100 - 102,400 ISO | 100 - 160,000 ISO |
ISO Boost | 100 - 204,800 ISO | no Enhancement |
Image Processor | DIGIC X | PRIME V |
DXO Sensor Quality (score) | 93 | .. |
DXO Color Depth (bits) | 24.5 | .. |
DXO Dynamic Range (EV) | 14.7 | .. |
DXO Low Light (ISO) | 3295 | .. |
Screen Specs | Canon R8 | Pentax K-3 III |
Viewfinder Type | Electronic viewfinder | Optical viewfinder |
Viewfinder Field of View | 100% | 100% |
Viewfinder Magnification | 0.70x | 0.70x |
Viewfinder Resolution | 2360k dots | |
Top-Level Screen | no Top Display | Control Panel |
LCD Framing | Live View | Live View |
Rear LCD Size | 3.0inch | 3.2inch |
LCD Resolution | 1620k dots | 1620k dots |
LCD Attachment | Swivel screen | Fixed screen |
Touch Input | Touchscreen | Touchscreen |
Shooting Specs | Canon R8 | Pentax K-3 III |
Focus System | On-Sensor Phase-detect | Phase-detect AF |
Manual Focusing Aid | Focus Peaking | Focus Peaking |
Max Shutter Speed (mechanical) | 1/4000s | 1/8000s |
Continuous Shooting | 6 shutter flaps/s | 12 shutter flaps/s |
Electronic Shutter | up to 1/16000s | no E-Shutter |
Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
Image Stabilization | Lens stabilization only | In-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 | Single UHS-II |
Connectivity Specs | Canon R8 | Pentax K-3 III |
External Flash | Hotshoe | Hotshoe |
Studio Flash | no PC Sync | PC Sync socket |
USB Connector | USB 3.2 | USB 3.2 |
HDMI Port | micro 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 R8 | Pentax K-3 III |
Environmental Sealing | not weather sealed | Weathersealed body |
Battery Type | Canon LP-E17 | Pentax D-LI90 |
Battery Life (CIPA) | 220 shots per charge | 800 shots per charge |
In-Camera Charging | USB charging | no USB charging |
Body Dimensions |
133 x 86 x 70 mm (5.2 x 3.4 x 2.8 in) |
135 x 104 x 74 mm (5.3 x 4.1 x 2.9 in) |
Camera Weight | 461 g (16.3 oz) | 820 g (28.9 oz) |
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