Canon R5 Mark II vs Olympus E-M1 III
The Canon EOS R5 Mark II and the Olympus OM-D E-M1 Mark III are two enthusiast cameras that were revealed to the public, respectively, in July 2024 and February 2020. Both the R5 Mark II and the E-M1 III are mirrorless interchangeable lens cameras that are based on a full frame (R5 Mark II) and a Four Thirds (E-M1 III) sensor. The Canon has a resolution of 44.8 megapixels, whereas the Olympus provides 20.2 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
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Check E-M1 III offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon EOS R5 Mark II and the Olympus OM-D E-M1 Mark 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 side-by-side display below illustrates the physical size and weight of the Canon R5 Mark II and the Olympus E-M1 III. 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 dimensions are rounded to the nearest millimeter.



If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M1 III is notably smaller (10 percent) than the Canon R5 Mark II. Moreover, the E-M1 III is markedly lighter (22 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 battery packs of both cameras can be charged via USB, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

| 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 | US$ 4 299 | amazon.com | |
| 2. | Olympus E-M1 III | 134 mm | 91 mm | 69 mm | 580 g | 420 | Y | Feb 2020 | US$ 1 799 | ebay.com | |
| 3. | Canon R1 | 158 mm | 150 mm | 87 mm | 1115 g | 1330 | Y | Jul 2024 | US$ 6 299 | amazon.com | |
| 4. | Canon R5 | 138 mm | 98 mm | 88 mm | 738 g | 320 | Y | Jul 2020 | US$ 3 899 | amazon.com | |
| 5. | Canon R5 C | 142 mm | 101 mm | 111 mm | 770 g | 320 | Y | Jan 2022 | US$ 4 499 | amazon.com | |
| 6. | Canon R6 | 138 mm | 98 mm | 88 mm | 680 g | 360 | Y | Jul 2020 | US$ 2 499 | amazon.com | |
| 7. | Canon R6 Mark II | 138 mm | 98 mm | 88 mm | 670 g | 450 | Y | Nov 2022 | US$ 2 499 | amazon.com | |
| 8. | Fujifilm GFX 50S II | 150 mm | 104 mm | 87 mm | 900 g | 440 | Y | Sep 2021 | US$ 3 999 | amazon.com | |
| 9. | Fujifilm GFX 100S II | 150 mm | 104 mm | 87 mm | 883 g | 530 | Y | May 2024 | US$ 4 999 | amazon.com | |
| 10. | Nikon Z8 | 144 mm | 119 mm | 83 mm | 910 g | 340 | Y | May 2023 | US$ 3 999 | amazon.com | |
| 11. | Olympus E-M1 II | 134 mm | 91 mm | 67 mm | 574 g | 440 | Y | Sep 2016 | US$ 1 999 | ebay.com | |
| 12. | Olympus E-M1X | 144 mm | 147 mm | 75 mm | 997 g | 870 | Y | Jan 2019 | US$ 2 999 | ebay.com | |
| 13. | OM System OM-1 | 135 mm | 92 mm | 73 mm | 599 g | 520 | Y | Feb 2022 | US$ 2 199 | ebay.com | |
| 14. | Panasonic G9 | 137 mm | 97 mm | 92 mm | 658 g | 400 | Y | Nov 2017 | US$ 1 699 | ebay.com | |
| 15. | Panasonic G90 | 130 mm | 94 mm | 77 mm | 536 g | 290 | Y | Apr 2019 | US$ 999 | ebay.com | |
| 16. | Panasonic S1R II | 134 mm | 102 mm | 92 mm | 795 g | 350 | Y | May 2025 | US$ 3 299 | amazon.com | |
| 17. | Sony A1 II | 136 mm | 97 mm | 83 mm | 743 g | 520 | Y | Nov 2024 | US$ 6 499 | amazon.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 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 E-M1 III was launched at a markedly lower price (by 58 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Canon R5 Mark II features a full frame sensor and the Olympus E-M1 III a Four Thirds sensor. The sensor area in the E-M1 III is 74 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.0. The sensor in the R5 Mark II has a native 3:2 aspect ratio, while the one in the E-M1 III offers a 4:3 aspect.

With 44.8MP, the R5 Mark II offers a higher resolution than the E-M1 III (20.2MP), but the R5 Mark II nevertheless has larger individual pixels (pixel pitch of 4.39μm versus 3.34μm for the E-M1 III) due to its larger sensor. Moreover, the R5 Mark II is a much more recent model (by 4 years and 5 months) than the E-M1 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 E-M1 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 Olympus E-M1 III are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.
Unlike the R5 Mark II, the E-M1 III has the capacity to capture high quality composite images (80MP) 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 Olympus OM-D E-M1 Mark III are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 64-25600.
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 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 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 R5 Mark II | Full Frame | 44.8 | 8192 | 5464 | 8k/60p | 25.4 | 14.8 | 3332 | 97 | |
| 2. | Olympus E-M1 III | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.3 | 13.1 | 1356 | 76 | |
| 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. | Olympus E-M1 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.7 | 12.8 | 1312 | 80 | |
| 12. | Olympus E-M1X | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.2 | 13.0 | 1254 | 75 | |
| 13. | OM System OM-1 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.4 | 1553 | 77 | |
| 14. | Panasonic G9 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.1 | 12.8 | 1138 | 74 | |
| 15. | Panasonic G90 | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.2 | 13.0 | 1273 | 75 | |
| 16. | Panasonic S1R II | Full Frame | 44.2 | 8144 | 5424 | 8K/30p | 25.4 | 14.8 | 3406 | 97 | |
| 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 are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the R5 Mark II provides a higher video resolution than the E-M1 III. It can shoot video footage at 8k/60p, while the Olympus is limited to 4K/30p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the R5 Mark II offers a substantially higher resolution than the one in the E-M1 III (5760k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Canon R5 Mark II, the Olympus E-M1 III, and comparable 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. | Olympus E-M1 III | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 18.0/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. | Olympus E-M1 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 18.0/s | n | Y | |
| 12. | Olympus E-M1X | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 18.0/s | n | Y | |
| 13. | OM System OM-1 | 5760 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 14. | Panasonic G9 | 3680 | Y | 3.0 / 1040 | swivel | Y | 1/8000s | 20.0/s | n | Y | |
| 15. | Panasonic G90 | 2360 | n | 3.0 / 1240 | swivel | Y | 1/4000s | 9.0/s | Y | Y | |
| 16. | Panasonic S1R II | 5760 | n | 3.2 / 1840 | full-flex | Y | 1/8000s | 9.0/s | n | 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. | |||||||||||
One feature that is present on the R5 Mark II, but is missing on the E-M1 III is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.
Both cameras have an articulated rear screen that can be turned to be front-facing. This feature will be particularly appreciated by vloggers and photographers who are interested in taking selfies.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, both cameras under consideration feature an 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 Olympus E-M1 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 E-M1 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 E-M1 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 Olympus OM-D E-M1 Mark 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. | Olympus E-M1 III | Y | stereo / mono | Y | Y | micro | 3.1 | 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. | Olympus E-M1 II | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | - | |
| 12. | Olympus E-M1X | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
| 13. | OM System OM-1 | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
| 14. | Panasonic G9 | Y | stereo / mono | Y | Y | full | 3.0 | Y | - | Y | |
| 15. | Panasonic G90 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | - | Y | |
| 16. | Panasonic S1R II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | 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.
The R5 Mark II is a recent model that features in the current product line-up of Canon. In contrast, the E-M1 III has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-M1 III was succeeded by the OM System OM-1. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Canon and Olympus websites.
Review summary
So what conclusions can be drawn? Which of the two cameras – the Canon R5 Mark II or the Olympus E-M1 III – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Canon EOS R5 Mark II:
- More detail: Offers more megapixels (44.8 vs 20.2MP) with a 52% 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).
- More detailed viewfinder: Has higher resolution electronic viewfinder (5760k vs 2360k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.76x vs 0.74x).
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (2100k vs 1037k dots).
- Faster data transfer: Supports a more advanced USB protocol (3.2 vs 3.1).
- More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
- More modern: Reflects 4 years and 5 months of technical progress since the E-M1 III launch.

Arguments in favor of the Olympus OM-D E-M1 Mark 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.
- Faster burst: Shoots at higher frequency (18 vs 12 flaps/sec) to capture the decisive moment.
- Less heavy: Has a lower weight (by 166g or 22 percent) and is thus easier to take along.
- Longer lasting: Gets more shots (420 versus 340) out of a single battery charge.
- More affordable: Was introduced into a lower priced category (58 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in February 2020).
If the count of individual advantages (bullet points above) is taken as a guide, the R5 Mark II is the clear winner of the match-up (15 : 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 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 R5 Mark II and the Olympus E-M1 III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens 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 R5 Mark II or the E-M1 III. 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 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.

| 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 | US$ 4 299 | amazon.com | |
| 2. | Olympus E-M1 III | 5/5 | .. | 5/5 | 83/100 | 4.5/5 | 4/5 | Feb 2020 | US$ 1 799 | ebay.com | |
| 3. | Canon R1 | .. | .. | .. | .. | .. | .. | Jul 2024 | US$ 6 299 | amazon.com | |
| 4. | Canon R5 | 4.5/5 | + | 4/5 | 91/100 | 4.5/5 | 4.5/5 | Jul 2020 | US$ 3 899 | amazon.com | |
| 5. | Canon R5 C | .. | + + | .. | .. | .. | .. | Jan 2022 | US$ 4 499 | amazon.com | |
| 6. | Canon R6 | 5/5 | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Jul 2020 | US$ 2 499 | amazon.com | |
| 7. | Canon R6 Mark II | 5/5 | + + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Nov 2022 | US$ 2 499 | amazon.com | |
| 8. | Fujifilm GFX 50S II | 5/5 | .. | 5/5 | 87/100 | .. | 5/5 | Sep 2021 | US$ 3 999 | amazon.com | |
| 9. | Fujifilm GFX 100S II | .. | .. | .. | .. | .. | .. | May 2024 | US$ 4 999 | amazon.com | |
| 10. | Nikon Z8 | 5/5 | .. | 5/5 | 94/100 | 5/5 | 4.5/5 | May 2023 | US$ 3 999 | amazon.com | |
| 11. | Olympus E-M1 II | 5/5 | + + | 5/5 | 85/100 | 4.5/5 | 4.5/5 | Sep 2016 | US$ 1 999 | ebay.com | |
| 12. | Olympus E-M1X | 4.5/5 | o | 5/5 | 85/100 | 4.5/5 | .. | Jan 2019 | US$ 2 999 | ebay.com | |
| 13. | OM System OM-1 | 5/5 | .. | .. | 87/100 | 5/5 | 4.5/5 | Feb 2022 | US$ 2 199 | ebay.com | |
| 14. | Panasonic G9 | .. | + + | 5/5 | 85/100 | 5/5 | 5/5 | Nov 2017 | US$ 1 699 | ebay.com | |
| 15. | Panasonic G90 | 4.5/5 | + | 4.5/5 | 83/100 | 4.5/5 | 4.5/5 | Apr 2019 | US$ 999 | ebay.com | |
| 16. | Panasonic S1R II | .. | .. | .. | .. | .. | .. | May 2025 | US$ 3 299 | amazon.com | |
| 17. | Sony A1 II | .. | .. | .. | .. | .. | .. | Nov 2024 | US$ 6 499 | amazon.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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.

Check R5 Mark II price at
amazon.com

Check E-M1 III offers at
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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 make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 550D vs Canon R5 Mark II
- Canon 5DS R vs Olympus E-M1 III
- Canon 760D vs Canon R5 Mark II
- Canon R5 Mark II vs Fujifilm GFX 100RF
- Canon R5 Mark II vs Leica X Vario
- Canon R5 Mark II vs Panasonic G97
- Canon R5 Mark II vs Panasonic GF1
- Nikon D5300 vs Olympus E-M1 III
- Olympus E-M1 III vs Olympus E-P1
- Olympus E-M1 III vs Panasonic G6
- Olympus E-M1 III vs Panasonic GX800
- Olympus E-M1 III vs Sony A7R IVA
Specifications: Canon R5 Mark II vs Olympus E-M1 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 | Olympus E-M1 III |
|---|---|---|
| Camera Type | Mirrorless system camera | Mirrorless system camera |
| Camera Lens | Canon RF mount lenses | Micro Four Thirds lenses |
| Launch Date | July 2024 | February 2020 |
| Launch Price | USD 4,299 | USD 1,799 |
| Sensor Specs | Canon R5 Mark II | Olympus E-M1 III |
| Sensor Technology | CMOS | CMOS |
| Sensor Format | Full Frame Sensor | Four Thirds Sensor |
| Sensor Size | 36.0 x 24.0 mm | 17.3 x 13.0 mm |
| Sensor Area | 864 mm2 | 224.9 mm2 |
| Sensor Diagonal | 43.3 mm | 21.6 mm |
| Crop Factor | 1.0x | 2.0x |
| Sensor Resolution | 44.8 Megapixels | 20.2 Megapixels |
| Image Resolution | 8192 x 5464 pixels | 5184 x 3888 pixels |
| Pixel Pitch | 4.39 μm | 3.34 μm |
| Pixel Density | 5.18 MP/cm2 | 8.96 MP/cm2 |
| Moiré control | Anti-Alias filter | no AA filter |
| Movie Capability | 8k/60p Video | 4K/30p Video |
| ISO Setting | 100 - 51,200 ISO | 200 - 25,600 ISO |
| ISO Boost | 50 - 102,400 ISO | 64 - 25,600 ISO |
| Image Processor | DIGIC X | TruePic IX |
| Screen Specs | Canon R5 Mark II | Olympus E-M1 III |
| Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.76x | 0.74x |
| Viewfinder Resolution | 5760k dots | 2360k dots |
| Top-Level Screen | Control Panel | no Top Display |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.2inch | 3.0inch |
| LCD Resolution | 2100k dots | 1037k dots |
| LCD Attachment | Swivel screen | Swivel screen |
| Touch Input | Touchscreen | Touchscreen |
| Shooting Specs | Canon R5 Mark II | Olympus E-M1 III |
| Focus System | On-Sensor Phase-detect | On-Sensor Phase-detect |
| Manual Focusing Aid | Focus Peaking | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/8000s | 1/8000s |
| Continuous Shooting | 12 shutter flaps/s | 18 shutter flaps/s |
| Electronic Shutter | up to 1/32000s | up to 1/32000s |
| 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 | Olympus E-M1 III |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | PC Sync socket | PC Sync socket |
| USB Connector | USB 3.2 | USB 3.1 |
| 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 |
| Body Specs | Canon R5 Mark II | Olympus E-M1 III |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Canon LP-E6P | Olympus BLH-1 |
| Battery Life (CIPA) | 340 shots per charge | 420 shots per charge |
| In-Camera Charging | USB charging | USB charging |
| Body Dimensions |
138 x 98 x 88 mm (5.4 x 3.9 x 3.5 in) |
134 x 91 x 69 mm (5.3 x 3.6 x 2.7 in) |
| Camera Weight | 746 g (26.3 oz) | 580 g (20.5 oz) |

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