OM System OM-5 vs Ricoh GR
The OM System OM-5 and the Ricoh GR are two digital cameras that were announced, respectively, in October 2022 and April 2013. The OM-5 is a mirrorless interchangeable lens camera, while the GR is a fixed lens compact. The cameras are based on a Four Thirds (OM-5) and an APS-C (GR) sensor. The OM System has a resolution of 20.2 megapixels, whereas the Ricoh provides 16.1 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Check OM-5 price at
amazon.com

Check GR offers at
ebay.com
Going beyond this snapshot of core features and characteristics, what are the differences between the OM System OM-5 and the Ricoh GR? 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 OM System OM-5 and the Ricoh GR 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 dimensions are rounded to the nearest millimeter.
The OM-5 can be obtained in two different colors (black, silver), while the GR 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 Ricoh GR is considerably smaller (33 percent) than the OM System OM-5. It is worth mentioning in this context that the OM-5 is splash and dust resistant, while the GR does not feature any corresponding weather-sealing.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the GR has a lens built in, whereas the OM-5 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the OM-5 and their specifications in the Micro Four Thirds Lens Catalog.
Concerning battery life, the OM-5 gets 310 shots out of its OM System BLS-50 battery, while the GR can take 290 images on a single charge of its Ricoh DB-65 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient 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.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | OM System OM-5 | 125 mm | 85 mm | 50 mm | 414 g | 310 | Y | Oct 2022 | US$ 1 199 | amazon.com | |
| 2. | Ricoh GR | 117 mm | 61 mm | 35 mm | 245 g | 290 | n | Apr 2013 | US$ 799 | ebay.com | |
| 3. | Olympus E-M1 | 130 mm | 94 mm | 63 mm | 497 g | 350 | Y | Sep 2013 | US$ 1 399 | ebay.com | |
| 4. | Olympus E-M5 II | 124 mm | 85 mm | 45 mm | 469 g | 310 | Y | Feb 2015 | US$ 1 099 | ebay.com | |
| 5. | Olympus E-M5 III | 125 mm | 85 mm | 50 mm | 414 g | 310 | Y | Oct 2019 | US$ 1 199 | ebay.com | |
| 6. | Olympus PEN-F | 125 mm | 72 mm | 37 mm | 427 g | 330 | n | Jan 2016 | US$ 1 199 | ebay.com | |
| 7. | OM System OM-1 | 135 mm | 92 mm | 73 mm | 599 g | 520 | Y | Feb 2022 | US$ 2 199 | ebay.com | |
| 8. | OM System OM-3 | 139 mm | 89 mm | 46 mm | 496 g | 590 | Y | Feb 2025 | US$ 1 999 | amazon.com | |
| 9. | OM System OM-5 II | 125 mm | 85 mm | 50 mm | 414 g | 310 | Y | Jun 2025 | US$ 1 199 | amazon.com | |
| 10. | Panasonic G90 | 130 mm | 94 mm | 77 mm | 536 g | 290 | Y | Apr 2019 | US$ 999 | ebay.com | |
| 11. | Panasonic GM1 | 99 mm | 55 mm | 30 mm | 204 g | 230 | n | Oct 2013 | US$ 749 | ebay.com | |
| 12. | Panasonic GM5 | 99 mm | 60 mm | 36 mm | 211 g | 220 | n | Sep 2014 | US$ 749 | ebay.com | |
| 13. | Panasonic GX8 | 133 mm | 78 mm | 63 mm | 487 g | 330 | Y | Jul 2015 | US$ 1 199 | ebay.com | |
| 14. | Ricoh GR II | 117 mm | 63 mm | 35 mm | 251 g | 320 | n | Jun 2015 | US$ 699 | ebay.com | |
| 15. | Sony A6500 | 120 mm | 67 mm | 53 mm | 453 g | 350 | Y | Oct 2016 | US$ 1 399 | ebay.com | |
| 16. | Sony RX100 II | 102 mm | 58 mm | 38 mm | 281 g | 350 | n | Jun 2013 | US$ 749 | ebay.com | |
| 17. | Sony RX100 III | 102 mm | 58 mm | 41 mm | 290 g | 320 | n | May 2014 | US$ 799 | 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The GR was launched at a lower price than the OM-5, despite having a lens built in. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. 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 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. 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 OM System OM-5 features a Four Thirds sensor and the Ricoh GR an APS-C sensor. The sensor area in the GR is 64 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the OM-5 has a native 4:3 aspect ratio, while the one in the GR offers a 3:2 aspect.

Despite having a smaller sensor, the OM System OM-5 offers a higher resolution of 20.2 megapixels, compared with 16.1 MP of the Ricoh GR. 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 3.34μm versus 4.79μm for the GR). However, it should be noted that the OM-5 is much more recent (by 9 years and 6 months) than the GR, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.
The resolution advantage of the OM System OM-5 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the OM-5 for good quality output (200 dots per inch) amounts to 25.9 x 19.4 inches or 65.8 x 49.4 cm, for very good quality (250 dpi) 20.7 x 15.6 inches or 52.7 x 39.5 cm, and for excellent quality (300 dpi) 17.3 x 13 inches or 43.9 x 32.9 cm. The corresponding values for the Ricoh GR are 24.6 x 16.3 inches or 62.6 x 41.5 cm for good quality, 19.7 x 13.1 inches or 50.1 x 33.2 cm for very good quality, and 16.4 x 10.9 inches or 41.7 x 27.6 cm for excellent quality prints.
The OM-5 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the GR, the OM-5 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 OM System OM-5 has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 64-25600. The corresponding ISO settings for the Ricoh GR are ISO 100 to ISO 25600 (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. | OM System OM-5 | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.4 | 13.4 | 1622 | 78 | |
| 2. | Ricoh GR | APS-C | 16.1 | 4928 | 3264 | 1080/30p | 23.6 | 13.5 | 972 | 78 | |
| 3. | Olympus E-M1 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 23.0 | 12.7 | 757 | 73 | |
| 4. | Olympus E-M5 II | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 23.0 | 12.5 | 842 | 73 | |
| 5. | Olympus E-M5 III | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.3 | 13.1 | 1324 | 76 | |
| 6. | Olympus PEN-F | Four Thirds | 20.2 | 5184 | 3888 | 1080/60p | 23.1 | 12.4 | 894 | 74 | |
| 7. | OM System OM-1 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.4 | 1553 | 77 | |
| 8. | OM System OM-3 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.7 | 1852 | 78 | |
| 9. | OM System OM-5 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.4 | 13.7 | 1889 | 78 | |
| 10. | Panasonic G90 | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.2 | 13.0 | 1273 | 75 | |
| 11. | Panasonic GM1 | Four Thirds | 15.8 | 4592 | 3448 | 1080/60i | 22.3 | 11.7 | 660 | 66 | |
| 12. | Panasonic GM5 | Four Thirds | 15.8 | 4592 | 3448 | 1080/60p | 22.1 | 11.7 | 721 | 66 | |
| 13. | Panasonic GX8 | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.5 | 12.6 | 806 | 75 | |
| 14. | Ricoh GR II | APS-C | 16.1 | 4928 | 3264 | 1080/30p | 23.6 | 13.7 | 1078 | 80 | |
| 15. | Sony A6500 | APS-C | 24.0 | 6000 | 4000 | 4K/30p | 24.5 | 13.7 | 1405 | 85 | |
| 16. | Sony RX100 II | 1-inch | 20.0 | 5472 | 3648 | 1080/60p | 22.5 | 12.4 | 483 | 67 | |
| 17. | Sony RX100 III | 1-inch | 20.0 | 5472 | 3648 | 1080/60p | 22.4 | 12.3 | 495 | 67 | |
| 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 OM-5 provides a higher video resolution than the GR. It can shoot video footage at 4K/30p, while the Ricoh is limited to 1080/30p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a range of features. For example, the OM-5 has an electronic viewfinder (2360k dots), which can be very helpful when shooting in bright sunlight. In contrast, the GR relies on live view and the rear LCD for framing. That said, the GR can be equipped with an optional viewfinder – the GV-1. The adjacent table lists some of the other core features of the OM System OM-5 and Ricoh GR along with similar information for a selection of comparators.

| 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. | OM System OM-5 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 2. | Ricoh GR | optional | n | 3.0 / 1230 | fixed | n | 1/4000s | 4.0/s | Y | n | |
| 3. | Olympus E-M1 | 2360 | n | 3.0 / 1037 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
| 4. | Olympus E-M5 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 5. | Olympus E-M5 III | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 6. | Olympus PEN-F | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 7. | OM System OM-1 | 5760 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 8. | OM System OM-3 | 2360 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 6.0/s | n | Y | |
| 9. | OM System OM-5 II | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 10. | Panasonic G90 | 2360 | n | 3.0 / 1240 | swivel | Y | 1/4000s | 9.0/s | Y | Y | |
| 11. | Panasonic GM1 | none | n | 3.0 / 1036 | fixed | Y | 1/500s | 5.0/s | Y | n | |
| 12. | Panasonic GM5 | 1166 | n | 3.0 / 921 | fixed | Y | 1/500s | 5.8/s | n | n | |
| 13. | Panasonic GX8 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 14. | Ricoh GR II | optional | n | 3.0 / 1230 | fixed | n | 1/4000s | 4.0/s | Y | n | |
| 15. | Sony A6500 | 2359 | n | 3.0 / 922 | tilting | Y | 1/4000s | 11.0/s | Y | Y | |
| 16. | Sony RX100 II | optional | n | 3.0 / 1229 | tilting | n | 1/2000s | 10.0/s | Y | Y | |
| 17. | Sony RX100 III | 1440 | n | 3.0 / 1229 | tilting | n | 1/2000s | 10.0/s | Y | 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 OM-5 has a touchscreen, while the GR has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
The OM-5 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 GR 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 OM-5 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 OM System OM-5 and the Ricoh GR 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 OM-5 and the GR write their files to SDXC cards. The OM-5 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the GR can use UHS-I cards (up to 104 MB/s).
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 OM System OM-5 and Ricoh GR 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. | OM System OM-5 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
| 2. | Ricoh GR | Y | mono / mono | - | - | micro | 2.0 | - | - | - | |
| 3. | Olympus E-M1 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 4. | Olympus E-M5 II | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 5. | Olympus E-M5 III | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
| 6. | Olympus PEN-F | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 7. | OM System OM-1 | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
| 8. | OM System OM-3 | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
| 9. | OM System OM-5 II | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
| 10. | Panasonic G90 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | - | Y | |
| 11. | Panasonic GM1 | - | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 12. | Panasonic GM5 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 13. | Panasonic GX8 | Y | stereo / mono | Y | - | micro | 2.0 | Y | Y | - | |
| 14. | Ricoh GR II | Y | stereo / mono | - | - | micro | 2.0 | Y | Y | - | |
| 15. | Sony A6500 | Y | stereo / mono | Y | - | micro | 2.0 | Y | Y | - | |
| 16. | Sony RX100 II | Y | stereo / mono | - | - | micro | 2.0 | Y | Y | - | |
| 17. | Sony RX100 III | - | stereo / mono | - | - | micro | 2.0 | Y | Y | - |
It is notable that the OM-5 has a microphone port, which is missing on the GR. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
The OM-5 is a recent model that features in the current product line-up of OM System. In contrast, the GR has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the GR was succeeded by the Ricoh GR II. Further information on the features and operation of the OM-5 and GR can be found, respectively, in the OM System OM-5 Manual (free pdf) or the online Ricoh GR Manual.
Review summary
So what conclusions can be drawn? Is there a clear favorite between the OM System OM-5 and the Ricoh GR? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

Arguments in favor of the OM System OM-5:
- More detail: Offers more megapixels (20.2 vs 16.1MP) with a 10% higher linear resolution.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Easier framing: Has an electronic viewfinder for image composition and settings control.
- 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.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 4 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Sharper images: Has hand-shake reducing image stabilization built-in.
- 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 9 years and 6 months of technical progress since the GR launch.

Advantages of the Ricoh GR:
- More detailed LCD: Has a higher resolution rear screen (1230k vs 1040k dots).
- Ready to shoot: Has an integrated lens, whereas the OM-5 necessitates an extra lens.
- More compact: Is smaller (117x61mm vs 125x85mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the OM-5).
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More heavily discounted: Has been around for much longer (launched in April 2013).
If the count of individual advantages (bullet points above) is taken as a guide, the OM-5 is the clear winner of the match-up (19 : 7 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. 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 OM System OM-5 and the Ricoh GR place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Prime Lens Compact 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 says little about, for example, the shooting experience and imaging performance of the OM-5 and the GR in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
Expert reviews
This is 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.

| Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | OM System OM-5 | 5/5 | .. | 4.5/5 | 83/100 | 5/5 | 4.5/5 | Oct 2022 | US$ 1 199 | amazon.com | |
| 2. | Ricoh GR | 5/5 | .. | .. | 79/100 | 4.5/5 | 4.5/5 | Apr 2013 | US$ 799 | ebay.com | |
| 3. | Olympus E-M1 | 5/5 | + + | .. | 84/100 | 4.5/5 | 4.5/5 | Sep 2013 | US$ 1 399 | ebay.com | |
| 4. | Olympus E-M5 II | 5/5 | + + | 4.5/5 | 81/100 | 5/5 | 5/5 | Feb 2015 | US$ 1 099 | ebay.com | |
| 5. | Olympus E-M5 III | 5/5 | + | 5/5 | 82/100 | 4.5/5 | 4.5/5 | Oct 2019 | US$ 1 199 | ebay.com | |
| 6. | Olympus PEN-F | .. | .. | 4/5 | 82/100 | 4.5/5 | 5/5 | Jan 2016 | US$ 1 199 | ebay.com | |
| 7. | OM System OM-1 | 5/5 | .. | .. | 87/100 | 5/5 | 4.5/5 | Feb 2022 | US$ 2 199 | ebay.com | |
| 8. | OM System OM-3 | .. | .. | .. | 86/100 | .. | .. | Feb 2025 | US$ 1 999 | amazon.com | |
| 9. | OM System OM-5 II | .. | .. | .. | .. | .. | .. | Jun 2025 | US$ 1 199 | amazon.com | |
| 10. | Panasonic G90 | 4.5/5 | + | 4.5/5 | 83/100 | 4.5/5 | 4.5/5 | Apr 2019 | US$ 999 | ebay.com | |
| 11. | Panasonic GM1 | 3/5 | + | .. | 78/100 | 5/5 | 4.5/5 | Oct 2013 | US$ 749 | ebay.com | |
| 12. | Panasonic GM5 | 3.5/5 | + | .. | 77/100 | 5/5 | 4.5/5 | Sep 2014 | US$ 749 | ebay.com | |
| 13. | Panasonic GX8 | 5/5 | + | .. | 82/100 | 4.5/5 | 4.5/5 | Jul 2015 | US$ 1 199 | ebay.com | |
| 14. | Ricoh GR II | .. | .. | .. | .. | 4.5/5 | 4.5/5 | Jun 2015 | US$ 699 | ebay.com | |
| 15. | Sony A6500 | 5/5 | + + | 3.5/5 | 85/100 | 4.5/5 | 4.5/5 | Oct 2016 | US$ 1 399 | ebay.com | |
| 16. | Sony RX100 II | 5/5 | + + | .. | 79/100 | 4.5/5 | 4.5/5 | Jun 2013 | US$ 749 | ebay.com | |
| 17. | Sony RX100 III | 5/5 | + + | .. | 82/100 | 4.5/5 | 5/5 | May 2014 | US$ 799 | ebay.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. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Check OM-5 price at
amazon.com

Check GR offers at
ebay.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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 700D vs OM System OM-5
- Canon SX420 vs Ricoh GR
- Nikon 1 J5 vs OM System OM-5
- Nikon D610 vs Ricoh GR
- Nikon W150 vs Ricoh GR
- OM System OM-5 vs Panasonic G97
- OM System OM-5 vs Panasonic GH5s
- OM System OM-5 vs Pentax K-1
- OM System OM-5 vs Sony A7C R
- Panasonic G7 vs Ricoh GR
- Panasonic LX100 vs Ricoh GR
- Pentax K-3 vs Ricoh GR
Specifications: OM System OM-5 vs Ricoh GR
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 | OM System OM-5 | Ricoh GR |
|---|---|---|
| Camera Type | Mirrorless system camera | Fixed lens compact camera |
| Camera Lens | Micro Four Thirds lenses | 28mm f/2.8 |
| Launch Date | October 2022 | April 2013 |
| Launch Price | USD 1,199 | USD 799 |
| Sensor Specs | OM System OM-5 | Ricoh GR |
| Sensor Technology | CMOS | CMOS |
| Sensor Format | Four Thirds Sensor | APS-C Sensor |
| Sensor Size | 17.3 x 13.0 mm | 23.7 x 15.6 mm |
| Sensor Area | 224.9 mm2 | 369.72 mm2 |
| Sensor Diagonal | 21.6 mm | 28.4 mm |
| Crop Factor | 2.0x | 1.5x |
| Sensor Resolution | 20.2 Megapixels | 16.1 Megapixels |
| Image Resolution | 5184 x 3888 pixels | 4928 x 3264 pixels |
| Pixel Pitch | 3.34 μm | 4.79 μm |
| Pixel Density | 8.96 MP/cm2 | 4.35 MP/cm2 |
| Moiré control | no AA filter | no AA filter |
| Movie Capability | 4K/30p Video | 1080/30p Video |
| ISO Setting | 200 - 25,600 ISO | 100 - 25,600 ISO |
| ISO Boost | 64 - 25,600 ISO | no Enhancement |
| DXO Sensor Quality (score) | .. | 78 |
| DXO Color Depth (bits) | .. | 23.6 |
| DXO Dynamic Range (EV) | .. | 13.5 |
| DXO Low Light (ISO) | .. | 972 |
| Screen Specs | OM System OM-5 | Ricoh GR |
| Viewfinder Type | Electronic viewfinder | Viewfinder optional |
| Viewfinder Field of View | 100% | |
| Viewfinder Magnification | 0.68x | |
| Viewfinder Resolution | 2360k dots | |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.0inch | 3.0inch |
| LCD Resolution | 1040k dots | 1230k dots |
| LCD Attachment | Swivel screen | Fixed screen |
| Touch Input | Touchscreen | no Touchscreen |
| Shooting Specs | OM System OM-5 | Ricoh GR |
| Focus System | On-Sensor Phase-detect | Contrast-detect AF |
| Manual Focusing Aid | Focus Peaking | no Peaking Feature |
| Continuous Shooting | 10 shutter flaps/s | 4 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 | no handshake reduction |
| Fill Flash | no On-Board Flash | Built-in Flash |
| Storage Medium | SDXC cards | SDXC cards |
| Single or Dual Card Slots | Single card slot | Single card slot |
| UHS card support | UHS-II | UHS-I |
| Connectivity Specs | OM System OM-5 | Ricoh GR |
| External Flash | Hotshoe | Hotshoe |
| USB Connector | USB 2.0 | USB 2.0 |
| HDMI Port | micro HDMI | micro HDMI |
| Microphone Port | External MIC port | no MIC socket |
| Wifi Support | Wifi built-in | no Wifi |
| Bluetooth Support | Bluetooth built-in | no Bluetooth |
| Body Specs | OM System OM-5 | Ricoh GR |
| Environmental Sealing | Weathersealed body | not weather sealed |
| Battery Type | OM System BLS-50 | Ricoh DB-65 |
| Battery Life (CIPA) | 310 shots per charge | 290 shots per charge |
| In-Camera Charging | USB charging | USB charging |
| Body Dimensions |
125 x 85 x 50 mm (4.9 x 3.3 x 2.0 in) |
117 x 61 x 35 mm (4.6 x 2.4 x 1.4 in) |
| Camera Weight | 414 g (14.6 oz) | 245 g (8.6 oz) |

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