Canon G1 X Mark III vs OM System OM-1
The Canon PowerShot G1 X Mark III and the OM System OM-1 are two enthusiast cameras that were officially introduced, respectively, in October 2017 and February 2022. The G1X Mark III is a fixed lens compact, while the OM-1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (G1X Mark III) and a Four Thirds (OM-1) sensor. The Canon has a resolution of 24 megapixels, whereas the OM System provides 20.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G1 X Mark III and the OM System OM-1? 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 G1 X Mark III and the OM System OM-1 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 size 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 OM System OM-1 is notably larger (38 percent) than the Canon G1 X Mark III. 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 and possibly misleading, as the G1X Mark III has a lens built in, whereas the OM-1 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-1 and their specifications in the Micro Four Thirds Lens Catalog.
Concerning battery life, the G1X Mark III gets 200 shots out of its Canon NB-13L battery, while the OM-1 can take 520 images on a single charge of its OM System BLX-1 power pack. The power pack in the OM-1 can be charged via the USB port, 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 G1 X Mark III | 115 mm | 78 mm | 51 mm | 399 g | 200 | Y | Oct 2017 | EUR 1 199 | ebay.com | |
| 2. | OM System OM-1 | 135 mm | 92 mm | 73 mm | 599 g | 520 | Y | Feb 2022 | EUR 2 199 | ebay.com | |
| 3. | Canon 6D Mark II | 144 mm | 111 mm | 75 mm | 765 g | 1200 | Y | Jun 2017 | EUR 2 099 | amazon.com | |
| 4. | Canon 80D | 139 mm | 105 mm | 79 mm | 730 g | 960 | Y | Feb 2016 | EUR 1 285 | ebay.com | |
| 5. | Canon 200D | 122 mm | 93 mm | 70 mm | 453 g | 650 | n | Jun 2017 | EUR 599 | ebay.com | |
| 6. | Canon G9 X Mark II | 98 mm | 58 mm | 31 mm | 206 g | 235 | n | Jan 2017 | EUR 499 | ebay.com | |
| 7. | Canon M50 | 116 mm | 88 mm | 59 mm | 390 g | 235 | n | Feb 2018 | EUR 779 | ebay.com | |
| 8. | Canon SX540 | 120 mm | 82 mm | 92 mm | 442 g | 205 | n | Jan 2016 | EUR 369 | ebay.com | |
| 9. | Fujifilm X100F | 127 mm | 75 mm | 52 mm | 469 g | 390 | n | Jan 2017 | EUR 1 399 | ebay.com | |
| 10. | Fujifilm X100V | 128 mm | 75 mm | 53 mm | 478 g | 420 | Y | Feb 2020 | EUR 1 499 | ebay.com | |
| 11. | Nikon D7500 | 136 mm | 104 mm | 73 mm | 720 g | 950 | Y | Apr 2017 | EUR 1 499 | amazon.com | |
| 12. | Olympus E-M1 II | 134 mm | 91 mm | 67 mm | 574 g | 440 | Y | Sep 2016 | EUR 1 999 | ebay.com | |
| 13. | Olympus E-M1 III | 134 mm | 91 mm | 69 mm | 580 g | 420 | Y | Feb 2020 | EUR 1 799 | ebay.com | |
| 14. | OM System OM-1 II | 135 mm | 92 mm | 73 mm | 599 g | 500 | Y | Jan 2024 | EUR 2 399 | amazon.com | |
| 15. | OM System OM-3 | 139 mm | 89 mm | 46 mm | 496 g | 590 | Y | Feb 2025 | EUR 1 999 | amazon.com | |
| 16. | Panasonic GH5 | 139 mm | 98 mm | 87 mm | 725 g | 410 | Y | Jan 2017 | EUR 1 999 | ebay.com | |
| 17. | Sony RX10 III | 133 mm | 94 mm | 127 mm | 1051 g | 420 | Y | Mar 2016 | EUR 1 599 | ebay.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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The G1X Mark III was launched at a lower price than the OM-1, despite having a lens built in. 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. 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 Canon G1 X Mark III features an APS-C sensor and the OM System OM-1 a Four Thirds sensor. The sensor area in the OM-1 is 32 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.0. The sensor in the G1X Mark III has a native 3:2 aspect ratio, while the one in the OM-1 offers a 4:3 aspect.

With 24MP, the G1X Mark III offers a higher resolution than the OM-1 (20.2MP), but the G1X Mark III nevertheless has larger individual pixels (pixel pitch of 3.72μm versus 3.34μm for the OM-1) due to its larger sensor. However, the OM-1 is a much more recent model (by 4 years and 4 months) than the G1X Mark 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 OM-1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Canon G1 X Mark III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the G1X Mark III for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the OM System OM-1 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 G1X Mark III, the OM-1 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 PowerShot G1 X Mark III has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the OM System OM-1 are ISO 80 to ISO 25600, with the possibility to increase the ISO range to 80-102400.
In terms of underlying technology, the G1X Mark III is build around a CMOS sensor, while the OM-1 uses a Stacked BSI-CMOS imager. 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 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 G1 X Mark III | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.8 | 13.2 | 1649 | 81 | |
| 2. | OM System OM-1 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.4 | 1553 | 77 | |
| 3. | Canon 6D Mark II | Full Frame | 26.0 | 6240 | 4160 | 1080/60p | 24.4 | 11.9 | 2862 | 85 | |
| 4. | Canon 80D | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.6 | 13.2 | 1135 | 79 | |
| 5. | Canon 200D | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.6 | 13.4 | 1041 | 79 | |
| 6. | Canon G9 X Mark II | 1-inch | 20.0 | 5472 | 3648 | 1080/60p | 21.9 | 12.5 | 522 | 65 | |
| 7. | Canon M50 | APS-C | 24.0 | 6000 | 4000 | 4K/24p | 23.8 | 13.3 | 1684 | 81 | |
| 8. | Canon SX540 | 1/2.3 | 20.2 | 5184 | 3888 | 1080/60p | 20.3 | 11.7 | 806 | 48 | |
| 9. | Fujifilm X100F | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.9 | 13.2 | 1704 | 81 | |
| 10. | Fujifilm X100V | APS-C | 26.0 | 6240 | 4160 | 4K/30p | 24.2 | 13.6 | 1996 | 84 | |
| 11. | Nikon D7500 | APS-C | 20.7 | 5568 | 3712 | 4K/30p | 24.3 | 14.0 | 1483 | 86 | |
| 12. | Olympus E-M1 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.7 | 12.8 | 1312 | 80 | |
| 13. | Olympus E-M1 III | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.3 | 13.1 | 1356 | 76 | |
| 14. | OM System OM-1 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.6 | 1749 | 78 | |
| 15. | OM System OM-3 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.7 | 1852 | 78 | |
| 16. | Panasonic GH5 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.9 | 13.0 | 807 | 77 | |
| 17. | Sony RX10 III | 1-inch | 20.0 | 5472 | 3648 | 4K/30p | 23.1 | 12.6 | 472 | 70 | |
| Note: DXO values in italics represent estimates based on sensor size and age. | |||||||||||
Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the OM-1 provides a better video resolution than the G1X Mark III. It can shoot movie footage at 4K/60p, while the Canon is limited to 1080/60p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the OM-1 offers a substantially higher resolution than the one in the G1X Mark III (5760k vs 2360k dots). The adjacent table lists some of the other core features of the Canon G1 X Mark III and OM System OM-1 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. | Canon G1 X Mark III | 2360 | n | 3.0 / 1040 | swivel | Y | 1/2000s | 9.0/s | Y | Y | |
| 2. | OM System OM-1 | 5760 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 3. | Canon 6D Mark II | optical | Y | 3.0 / 1040 | swivel | Y | 1/4000s | 6.5/s | n | n | |
| 4. | Canon 80D | optical | Y | 3.0 / 1040 | swivel | Y | 1/8000s | 7.0/s | Y | n | |
| 5. | Canon 200D | optical | n | 3.0 / 1040 | swivel | Y | 1/4000s | 5.0/s | Y | n | |
| 6. | Canon G9 X Mark II | none | n | 3.0 / 1040 | fixed | Y | 1/2000s | 8.2/s | Y | Y | |
| 7. | Canon M50 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/4000s | 10.0/s | Y | n | |
| 8. | Canon SX540 | none | n | 3.0 / 461 | fixed | n | 1/2000s | 5.9/s | Y | Y | |
| 9. | Fujifilm X100F | 2360 | n | 3.0 / 1040 | fixed | n | 1/4000s | 8.0/s | Y | n | |
| 10. | Fujifilm X100V | 3690 | n | 3.0 / 1620 | tilting | Y | 1/4000s | 11.0/s | n | n | |
| 11. | Nikon D7500 | optical | Y | 3.2 / 922 | tilting | Y | 1/8000s | 8.0/s | Y | n | |
| 12. | Olympus E-M1 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 18.0/s | n | Y | |
| 13. | Olympus E-M1 III | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 18.0/s | n | Y | |
| 14. | OM System OM-1 II | 5760 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 15. | OM System OM-3 | 2360 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 6.0/s | n | Y | |
| 16. | Panasonic GH5 | 3680 | n | 3.2 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 17. | Sony RX10 III | 2359 | Y | 3.0 / 1229 | tilting | n | 1/2000s | 14.0/s | Y | Y | |
| Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. | |||||||||||
One difference between the cameras concerns the presence of an on-board flash. The G1X Mark III has one, while the OM-1 does not. While the built-in flash of the G1X Mark III is not very powerful, it can at times be useful as a fill-in light.
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, the OM-1 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 G1 X Mark III and the OM System OM-1 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 G1X Mark III and the OM-1 write their files to SDXC cards. The OM-1 features dual card slots, which can be very useful in case a memory card fails. In contrast, the G1X Mark III only has one slot. The OM-1 supports UHS-II cards (on both slots), while the G1X Mark III can use UHS-I cards.
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 PowerShot G1 X Mark III and OM System OM-1 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 G1 X Mark III | Y | stereo / mono | - | - | micro | 2.0 | Y | Y | Y | |
| 2. | OM System OM-1 | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
| 3. | Canon 6D Mark II | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
| 4. | Canon 80D | Y | stereo / mono | Y | Y | mini | 2.0 | Y | Y | - | |
| 5. | Canon 200D | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
| 6. | Canon G9 X Mark II | - | stereo / mono | - | - | micro | 2.0 | Y | Y | Y | |
| 7. | Canon M50 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
| 8. | Canon SX540 | - | stereo / mono | - | - | mini | 2.0 | Y | Y | - | |
| 9. | Fujifilm X100F | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 10. | Fujifilm X100V | Y | stereo / mono | Y | - | micro | 3.1 | Y | - | Y | |
| 11. | Nikon D7500 | Y | stereo / mono | Y | Y | mini | 2.0 | Y | - | Y | |
| 12. | Olympus E-M1 II | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | - | |
| 13. | Olympus E-M1 III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | - | Y | |
| 14. | OM System OM-1 II | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
| 15. | OM System OM-3 | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
| 16. | Panasonic GH5 | Y | stereo / mono | Y | Y | full | 3.1 | Y | - | Y | |
| 17. | Sony RX10 III | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - |
It is notable that the OM-1 has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The G1X Mark III does not feature such a mic input.
Studio photographers will appreciate that the OM System OM-1 (unlike the G1X Mark III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the G1X Mark III and the OM-1 have been discontinued, but can regularly be found used on ebay. The OM-1 was replaced by the OM System OM-1 II, while the G1X Mark III does not have a direct successor. Further information on the features and operation of the G1X Mark III and OM-1 can be found, respectively, in the Canon G1 X Mark III Manual (free pdf) or the online OM System OM-1 Manual.
Review summary
So what is the bottom line? Is the Canon G1 X Mark III better than the OM System OM-1 or vice versa? The listing below highlights the relative strengths of the two models.

Advantages of the Canon PowerShot G1 X Mark III:
- More detail: Offers more megapixels (24 vs 20.2MP) with a 11% higher linear resolution.
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
- Richer colors: The pixel size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
- Ready to shoot: Has a lens built-in, whereas the OM-1 requires a separate lens.
- More compact: Is smaller (115x78mm vs 135x92mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the OM-1).
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More heavily discounted: Has been available for much longer (launched in October 2017).

Arguments in favor of the OM System OM-1:
- 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.
- Better video: Provides higher definition movie capture (4K/60p vs 1080/60p).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More detailed viewfinder: Has higher resolution electronic viewfinder (5760k vs 2360k dots).
- More detailed LCD: Has a higher resolution rear screen (1640k vs 1040k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/2000s) to freeze action.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
- Longer lasting: Gets more shots (520 versus 200) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
- 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.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More modern: Reflects 4 years and 4 months of technical progress since the G1X Mark III launch.
If the count of relative strengths (bullet points above) is taken as a measure, the OM-1 is the clear winner of the contest (17 : 13 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the Canon G1 X Mark III and the OM System OM-1 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the G1X Mark III or the OM-1. 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 following table reports the overall ratings of the cameras as published by some of the major 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 G1 X Mark III | 5/5 | + | 4/5 | 79/100 | 4.5/5 | 4.5/5 | Oct 2017 | EUR 1 199 | ebay.com | |
| 2. | OM System OM-1 | 5/5 | .. | .. | 87/100 | 5/5 | 4.5/5 | Feb 2022 | EUR 2 199 | ebay.com | |
| 3. | Canon 6D Mark II | 4/5 | + | 4/5 | 80/100 | 4.5/5 | 4/5 | Jun 2017 | EUR 2 099 | amazon.com | |
| 4. | Canon 80D | 4/5 | + + | 4.5/5 | 84/100 | 4.5/5 | 4.5/5 | Feb 2016 | EUR 1 285 | ebay.com | |
| 5. | Canon 200D | 4/5 | + + | 4/5 | 78/100 | 4.5/5 | 4.5/5 | Jun 2017 | EUR 599 | ebay.com | |
| 6. | Canon G9 X Mark II | 4/5 | .. | 4/5 | 75/100 | 4.5/5 | 4.5/5 | Jan 2017 | EUR 499 | ebay.com | |
| 7. | Canon M50 | .. | + | 4/5 | 79/100 | .. | 3.5/5 | Feb 2018 | EUR 779 | ebay.com | |
| 8. | Canon SX540 | .. | .. | .. | .. | .. | .. | Jan 2016 | EUR 369 | ebay.com | |
| 9. | Fujifilm X100F | 5/5 | + | 3.9/5 | 83/100 | 4.5/5 | 4.5/5 | Jan 2017 | EUR 1 399 | ebay.com | |
| 10. | Fujifilm X100V | 5/5 | + + | 4.5/5 | 86/100 | 5/5 | 4.5/5 | Feb 2020 | EUR 1 499 | ebay.com | |
| 11. | Nikon D7500 | 4.5/5 | + + | 4.5/5 | 86/100 | 5/5 | 4.5/5 | Apr 2017 | EUR 1 499 | amazon.com | |
| 12. | Olympus E-M1 II | 5/5 | + + | 5/5 | 85/100 | 4.5/5 | 4.5/5 | Sep 2016 | EUR 1 999 | ebay.com | |
| 13. | Olympus E-M1 III | 5/5 | .. | 5/5 | 83/100 | 4.5/5 | 4/5 | Feb 2020 | EUR 1 799 | ebay.com | |
| 14. | OM System OM-1 II | .. | .. | .. | .. | .. | .. | Jan 2024 | EUR 2 399 | amazon.com | |
| 15. | OM System OM-3 | .. | .. | .. | 86/100 | .. | .. | Feb 2025 | EUR 1 999 | amazon.com | |
| 16. | Panasonic GH5 | 4.5/5 | + + | .. | 85/100 | 4.5/5 | 5/5 | Jan 2017 | EUR 1 999 | ebay.com | |
| 17. | Sony RX10 III | 5/5 | + | .. | 84/100 | 4.5/5 | 4.5/5 | Mar 2016 | EUR 1 599 | ebay.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
The review scores listed above should be treated 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Check G1X Mark III offers at
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Check OM-1 offers at
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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 use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 550D vs Canon G1 X Mark III
- Canon D60 vs Canon G1 X Mark III
- Canon G1 X Mark III vs Canon T7i
- Canon G1 X Mark III vs Olympus E-P1
- Canon G1 X Mark III vs Panasonic FZ1000 II
- Canon G1 X Mark III vs Panasonic S9
- Canon SL1 vs OM System OM-1
- Fujifilm X-A10 vs OM System OM-1
- Fujifilm X-H1 vs OM System OM-1
- OM System OM-1 vs Panasonic FZ330
- OM System OM-1 vs Sony A7 II
- OM System OM-1 vs Sony A900
Specifications: Canon G1 X Mark III vs OM System OM-1
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 G1 X Mark III | OM System OM-1 |
|---|---|---|
| Camera Type | Fixed lens compact camera | Mirrorless system camera |
| Camera Lens | 24-72mm f/2.8-5.6 | Micro Four Thirds lenses |
| Launch Date | October 2017 | February 2022 |
| Launch Price | USD 1,299 | USD 2,199 |
| Sensor Specs | Canon G1 X Mark III | OM System OM-1 |
| Sensor Technology | CMOS | Stacked BSI-CMOS |
| Sensor Format | APS-C Sensor | Four Thirds Sensor |
| Sensor Size | 22.3 x 14.9 mm | 17.3 x 13.0 mm |
| Sensor Area | 332.27 mm2 | 224.9 mm2 |
| Sensor Diagonal | 26.8 mm | 21.6 mm |
| Crop Factor | 1.5x | 2.0x |
| Sensor Resolution | 24 Megapixels | 20.2 Megapixels |
| Image Resolution | 6000 x 4000 pixels | 5184 x 3888 pixels |
| Pixel Pitch | 3.72 μm | 3.34 μm |
| Pixel Density | 7.22 MP/cm2 | 8.96 MP/cm2 |
| Moiré control | Anti-Alias filter | no AA filter |
| Movie Capability | 1080/60p Video | 4K/60p Video |
| ISO Setting | 100 - 25,600 ISO | 80 - 25,600 ISO |
| ISO Boost | no Enhancement | 80 - 102,400 ISO |
| Image Processor | DIGIC 7 | TruePic X |
| Screen Specs | Canon G1 X Mark III | OM System OM-1 |
| Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.82x | |
| Viewfinder Resolution | 2360k dots | 5760k dots |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.0inch | 3.0inch |
| LCD Resolution | 1040k dots | 1640k dots |
| LCD Attachment | Swivel screen | Swivel screen |
| Touch Input | Touchscreen | Touchscreen |
| Shooting Specs | Canon G1 X Mark III | OM System OM-1 |
| Focus System | On-Sensor Phase-detect | On-Sensor Phase-detect |
| Manual Focusing Aid | Focus Peaking | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/2000s | 1/8000s |
| Continuous Shooting | 9 shutter flaps/s | 10 shutter flaps/s |
| Electronic Shutter | no E-Shutter | up to 1/32000s |
| Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
| Image Stabilization | Lens-based stabilization | In-body stabilization |
| Fill Flash | Built-in 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-I | Dual UHS-II |
| Connectivity Specs | Canon G1 X Mark III | OM System OM-1 |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | no PC Sync | PC Sync socket |
| USB Connector | USB 2.0 | USB 3.0 |
| HDMI Port | micro HDMI | micro HDMI |
| Microphone Port | no MIC socket | External MIC port |
| Headphone Socket | no Headphone port | Headphone port |
| Wifi Support | Wifi built-in | Wifi built-in |
| Near-Field Communication | NFC built-in | no NFC |
| Bluetooth Support | Bluetooth built-in | Bluetooth built-in |
| Body Specs | Canon G1 X Mark III | OM System OM-1 |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Canon NB-13L | OM System BLX-1 |
| Battery Life (CIPA) | 200 shots per charge | 520 shots per charge |
| In-Camera Charging | no USB charging | USB charging |
| Body Dimensions |
115 x 78 x 51 mm (4.5 x 3.1 x 2.0 in) |
135 x 92 x 73 mm (5.3 x 3.6 x 2.9 in) |
| Camera Weight | 399 g (14.1 oz) | 599 g (21.1 oz) |

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