OM System OM-1 II vs Sony A9 III
The OM System OM-1 II and the Sony Alpha A9 III are two digital cameras that were announced, respectively, in January 2024 and November 2023. Both the OM-1 II and the A9 III are mirrorless interchangeable lens cameras that are based on a Four Thirds (OM-1 II) and a full frame (A9 III) sensor. The OM System has a resolution of 20.2 megapixels, whereas the Sony provides 24 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 OM System OM-1 II and the Sony Alpha A9 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 OM System OM-1 II and the Sony A9 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 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 Sony A9 III is notably larger (6 percent) than the OM System OM-1 II. Moreover, the A9 III is markedly heavier (17 percent) than the OM-1 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Micro Four Thirds Lens Catalog (OM-1 II) and the Sony FE Lens Catalog (A9 III). Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.
Concerning battery life, the OM-1 II gets 500 shots out of its OM System BLX-1 battery, while the A9 III can take 530 images on a single charge of its Sony NP-FZ100 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-1 II | 135 mm | 92 mm | 73 mm | 599 g | 500 | Y | Jan 2024 | US$ 2 399 | amazon.com | |
2. | Sony A9 III | 136 mm | 97 mm | 83 mm | 702 g | 530 | Y | Nov 2023 | US$ 5 999 | amazon.com | |
3. | Canon R6 Mark II | 138 mm | 98 mm | 88 mm | 670 g | 450 | Y | Nov 2022 | US$ 2 499 | amazon.com | |
4. | Nikon Z6 II | 134 mm | 101 mm | 70 mm | 705 g | 410 | Y | Oct 2020 | US$ 1 999 | amazon.com | |
5. | Nikon Zf | 144 mm | 103 mm | 49 mm | 710 g | 380 | Y | Sep 2023 | US$ 1 999 | amazon.com | |
6. | Olympus E-M1 II | 134 mm | 91 mm | 67 mm | 574 g | 440 | Y | Sep 2016 | US$ 1 999 | 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-5 | 125 mm | 85 mm | 50 mm | 414 g | 310 | Y | Oct 2022 | US$ 1 199 | amazon.com | |
9. | Panasonic GH5 | 139 mm | 98 mm | 87 mm | 725 g | 410 | Y | Jan 2017 | US$ 1 999 | ebay.com | |
10. | Panasonic GH5 II | 139 mm | 98 mm | 87 mm | 727 g | 400 | Y | May 2021 | US$ 1 699 | amazon.com | |
11. | Panasonic S5 II | 134 mm | 102 mm | 90 mm | 740 g | 370 | Y | Jan 2023 | US$ 1 999 | amazon.com | |
12. | Sony A1 | 129 mm | 97 mm | 81 mm | 737 g | 530 | Y | Jan 2021 | US$ 6 499 | amazon.com | |
13. | Sony A7 II | 127 mm | 96 mm | 60 mm | 599 g | 350 | Y | Nov 2014 | US$ 1 999 | ebay.com | |
14. | Sony A7 III | 127 mm | 96 mm | 74 mm | 650 g | 610 | Y | Feb 2018 | US$ 1 999 | amazon.com | |
15. | Sony A7C II | 124 mm | 71 mm | 63 mm | 514 g | 540 | Y | Aug 2023 | US$ 2 199 | amazon.com | |
16. | Sony A9 | 127 mm | 96 mm | 63 mm | 673 g | 650 | Y | Apr 2017 | US$ 4 499 | ebay.com | |
17. | Sony A9 II | 129 mm | 96 mm | 76 mm | 678 g | 690 | Y | Oct 2019 | US$ 4 499 | amazon.com | |
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders. | |||||||||||
Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The OM-1 II was launched at a markedly lower price (by 60 percent) than the A9 III, 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 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. 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the OM System OM-1 II features a Four Thirds sensor and the Sony A9 III a full frame sensor. The sensor area in the A9 III is 276 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.0. The sensor in the OM-1 II has a native 4:3 aspect ratio, while the one in the A9 III offers a 3:2 aspect.
With 24MP, the A9 III offers a higher resolution than the OM-1 II (20.2MP), but the A9 III nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 3.34μm for the OM-1 II) due to its larger sensor. It is noteworthy in this context that the two cameras were released in close succession, so that their sensors are from the same technological generation. Coming back to sensor resolution, it should be mentioned that the OM-1 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A9 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A9 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 II 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 A9 III, the OM-1 II 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-1 II has a native sensitivity range from ISO 80 to ISO 25600, which can be extended to ISO 80-102400. The corresponding ISO settings for the Sony Alpha A9 III are ISO 250 to ISO 25600, with the possibility to increase the ISO range to 125-51200.
In terms of underlying technology, the OM-1 II is build around a Stacked BSI-CMOS sensor, while the A9 III uses a Stacked 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.
Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | OM System OM-1 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.6 | 1749 | 78 | |
2. | Sony A9 III | Full Frame | 24.0 | 6000 | 4000 | 4K/120p | 25.4 | 14.7 | 3243 | 96 | |
3. | Canon R6 Mark II | Full Frame | 24.0 | 6000 | 4000 | 4k/60p | 25.4 | 14.6 | 3154 | 96 | |
4. | Nikon Z6 II | Full Frame | 24.3 | 6048 | 4024 | 4K/60p | 25.0 | 14.4 | 3303 | 94 | |
5. | Nikon Zf | Full Frame | 24.3 | 6048 | 4024 | 4K/60p | 25.4 | 14.7 | 3243 | 96 | |
6. | Olympus E-M1 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.7 | 12.8 | 1312 | 80 | |
7. | OM System OM-1 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.4 | 1553 | 77 | |
8. | OM System OM-5 | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.4 | 13.4 | 1622 | 78 | |
9. | Panasonic GH5 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.9 | 13.0 | 807 | 77 | |
10. | Panasonic GH5 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.7 | 13.1 | 1136 | 79 | |
11. | Panasonic S5 II | Full Frame | 24.0 | 6000 | 4000 | 6K/30p | 25.4 | 14.6 | 3158 | 96 | |
12. | Sony A1 | Full Frame | 49.8 | 8640 | 5760 | 8k/30p | 25.9 | 14.5 | 3163 | 98 | |
13. | Sony A7 II | Full Frame | 24.0 | 6000 | 4000 | 1080/60p | 24.9 | 13.6 | 2449 | 90 | |
14. | Sony A7 III | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3730 | 96 | |
15. | Sony A7C II | Full Frame | 32.7 | 7008 | 4672 | 4K/60p | 25.4 | 14.7 | 3237 | 96 | |
16. | Sony A9 | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 24.9 | 13.3 | 3517 | 92 | |
17. | Sony A9 II | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.0 | 3434 | 93 | |
Note: DXO values in italics represent estimates based on sensor size and age. |
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A9 III provides a faster frame rate than the OM-1 II. It can shoot movie footage at 4K/120p, while the OM System is limited to 4K/60p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A9 III offers a substantially higher resolution than the one in the OM-1 II (9440k vs 5760k dots). The following table reports on some other key feature differences and similarities of the OM System OM-1 II, the Sony A9 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. | OM System OM-1 II | 5760 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
2. | Sony A9 III | 9440 | n | 3.2 / 2100 | full-flex | Y | 1/80000s | 120.0/s | n | Y | |
3. | Canon R6 Mark II | 3690 | n | 3.0 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
4. | Nikon Z6 II | 3690 | Y | 3.2 / 2100 | tilting | Y | 1/8000s | 14.0/s | n | Y | |
5. | Nikon Zf | 3690 | n | 3.2 / 2100 | swivel | Y | 1/8000s | 14.0/s | n | Y | |
6. | Olympus E-M1 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 18.0/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-5 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
9. | Panasonic GH5 | 3680 | n | 3.2 / 1620 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
10. | Panasonic GH5 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
11. | Panasonic S5 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 9.0/s | n | Y | |
12. | Sony A1 | 9437 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
13. | Sony A7 II | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 5.0/s | n | Y | |
14. | Sony A7 III | 2359 | n | 3.0 / 922 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
15. | Sony A7C II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/4000s | 10.0/s | n | Y | |
16. | Sony A9 | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
17. | Sony A9 II | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 20.0/s | n | Y | |
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. |
The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, 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 OM System OM-1 II and the Sony A9 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 OM-1 II writes its imaging data to SDXC cards, while the A9 III uses CFexpress (type A) or SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. Both cameras support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 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-1 II and Sony Alpha A9 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. | OM System OM-1 II | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
2. | Sony A9 III | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
3. | Canon R6 Mark II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
4. | Nikon Z6 II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
5. | Nikon Zf | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
6. | Olympus E-M1 II | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | - | |
7. | OM System OM-1 | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
8. | OM System OM-5 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
9. | Panasonic GH5 | Y | stereo / mono | Y | Y | full | 3.1 | Y | - | Y | |
10. | Panasonic GH5 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
11. | Panasonic S5 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
12. | Sony A1 | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
13. | Sony A7 II | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
14. | Sony A7 III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
15. | Sony A7C II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
16. | Sony A9 | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | Y | |
17. | Sony A9 II | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y |
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the OM-1 II and the A9 III are recent models that are part of the current product line-up. The A9 III replaced the earlier Sony A9 II, while the OM-1 II followed on from the OM System OM-1. Further information on the features and operation of the OM-1 II and A9 III can be found, respectively, in the OM System OM-1 II Manual (free pdf) or the online Sony A9 III Manual.
Review summary
So how do things add up? Is the OM System OM-1 II better than the Sony A9 III or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the OM System OM-1 II:
- 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.
- Less heavy: Is lighter (by 103g or 15 percent) and hence easier to carry around.
- More affordable: Was introduced into a lower priced category (60 percent cheaper at launch).
Arguments in favor of the Sony Alpha A9 III:
- More detail: Has more megapixels (24 vs 20.2MP), which boosts linear resolution by 11%.
- 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.
- Better video: Provides higher movie framerates (4K/120p versus 4K/60p).
- More detailed viewfinder: Has higher resolution electronic viewfinder (9440k vs 5760k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.9x vs 0.82x).
- 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 1640k dots).
- Faster shutter: Has higher mechanical shutter speed (1/80000s vs 1/8000s) to freeze action.
- Faster burst: Shoots at higher frequency (120 vs 10 flaps/sec) to capture the decisive moment.
- More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
If the number of relative strengths (bullet points above) is taken as a guide, the A9 III is the clear winner of the contest (14 : 4 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape shooter. Hence, the decision which camera is best and worth buying is often a very personal one.
How about other alternatives? Do the specifications of the OM System OM-1 II and the Sony A9 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 says little about, for example, the shooting experience and imaging performance of the OM-1 II and the A9 III in practical situations. 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 hands-on reviews by experts 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. | OM System OM-1 II | .. | .. | .. | .. | .. | .. | Jan 2024 | US$ 2 399 | amazon.com | |
2. | Sony A9 III | 4.5/5 | .. | .. | .. | .. | .. | Nov 2023 | US$ 5 999 | amazon.com | |
3. | Canon R6 Mark II | 5/5 | + + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Nov 2022 | US$ 2 499 | amazon.com | |
4. | Nikon Z6 II | 4.5/5 | .. | 4/5 | 89/100 | 4.5/5 | 4.5/5 | Oct 2020 | US$ 1 999 | amazon.com | |
5. | Nikon Zf | 4.5/5 | .. | 4.5/5 | 90/100 | 4.5/5 | 5/5 | Sep 2023 | US$ 1 999 | amazon.com | |
6. | Olympus E-M1 II | 5/5 | + + | 5/5 | 85/100 | 4.5/5 | 4.5/5 | Sep 2016 | US$ 1 999 | 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-5 | 5/5 | .. | 4.5/5 | 83/100 | 5/5 | 4.5/5 | Oct 2022 | US$ 1 199 | amazon.com | |
9. | Panasonic GH5 | 4.5/5 | + + | .. | 85/100 | 4.5/5 | 5/5 | Jan 2017 | US$ 1 999 | ebay.com | |
10. | Panasonic GH5 II | 4.5/5 | .. | 4.5/5 | 85/100 | 4.5/5 | 5/5 | May 2021 | US$ 1 699 | amazon.com | |
11. | Panasonic S5 II | 4.5/5 | + + | 5/5 | 90/100 | 4.5/5 | 5/5 | Jan 2023 | US$ 1 999 | amazon.com | |
12. | Sony A1 | 5/5 | o | 4.5/5 | 93/100 | 4.5/5 | 5/5 | Jan 2021 | US$ 6 499 | amazon.com | |
13. | Sony A7 II | 5/5 | + | 4/5 | 82/100 | 4.5/5 | 5/5 | Nov 2014 | US$ 1 999 | ebay.com | |
14. | Sony A7 III | .. | + + | 4.5/5 | 89/100 | 5/5 | 5/5 | Feb 2018 | US$ 1 999 | amazon.com | |
15. | Sony A7C II | 4/5 | .. | 4/5 | 87/100 | 4.5/5 | 4.5/5 | Aug 2023 | US$ 2 199 | amazon.com | |
16. | Sony A9 | 5/5 | + + | 4.8/5 | 89/100 | 5/5 | 5/5 | Apr 2017 | US$ 4 499 | ebay.com | |
17. | Sony A9 II | .. | .. | 5/5 | 90/100 | 5/5 | 5/5 | Oct 2019 | US$ 4 499 | amazon.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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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 a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 60D vs Sony A9 III
- Canon M50 Mark II vs OM System OM-1 II
- Canon R5 vs Sony A9 III
- Canon T8i vs OM System OM-1 II
- Leica SL3 vs OM System OM-1 II
- Nikon A1000 vs OM System OM-1 II
- Nikon D810 vs Sony A9 III
- Nikon Z7 II vs OM System OM-1 II
- Olympus E-M5 III vs OM System OM-1 II
- Panasonic GH3 vs Sony A9 III
- Panasonic GH5 vs Sony A9 III
- Sony A9 III vs Sony HX99
Specifications: OM System OM-1 II vs Sony A9 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 | OM System OM-1 II | Sony A9 III |
---|---|---|
Camera Type | Mirrorless system camera | Mirrorless system camera |
Camera Lens | Micro Four Thirds lenses | Sony E mount lenses |
Launch Date | January 2024 | November 2023 |
Launch Price | USD 2,399 | USD 5,999 |
Sensor Specs | OM System OM-1 II | Sony A9 III |
Sensor Technology | Stacked BSI-CMOS | Stacked CMOS |
Sensor Format | Four Thirds Sensor | Full Frame Sensor |
Sensor Size | 17.3 x 13.0 mm | 35.6 x 23.8 mm |
Sensor Area | 224.9 mm2 | 847.28 mm2 |
Sensor Diagonal | 21.6 mm | 42.8 mm |
Crop Factor | 2.0x | 1.0x |
Sensor Resolution | 20.2 Megapixels | 24 Megapixels |
Image Resolution | 5184 x 3888 pixels | 6000 x 4000 pixels |
Pixel Pitch | 3.34 μm | 5.94 μm |
Pixel Density | 8.96 MP/cm2 | 2.83 MP/cm2 |
Moiré control | no AA filter | Anti-Alias filter |
Movie Capability | 4K/60p Video | 4K/120p Video |
ISO Setting | 80 - 25,600 ISO | 250 - 25,600 ISO |
ISO Boost | 80 - 102,400 ISO | 125 - 51,200 ISO |
Image Processor | TruePic X | Dual BIONZ XR |
Screen Specs | OM System OM-1 II | Sony A9 III |
Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
Viewfinder Field of View | 100% | 100% |
Viewfinder Magnification | 0.82x | 0.9x |
Viewfinder Resolution | 5760k dots | 9440k dots |
LCD Framing | Live View | Live View |
Rear LCD Size | 3.0inch | 3.2inch |
LCD Resolution | 1640k dots | 2100k dots |
LCD Attachment | Swivel screen | Fully flexible screen |
Touch Input | Touchscreen | Touchscreen |
Shooting Specs | OM System OM-1 II | Sony A9 III |
Focus System | On-Sensor Phase-detect | On-Sensor Phase-detect |
Manual Focusing Aid | Focus Peaking | Focus Peaking |
Max Shutter Speed (mechanical) | 1/8000s | 1/80000s |
Continuous Shooting | 10 shutter flaps/s | 120 shutter flaps/s |
Electronic Shutter | up to 1/32000s | up to 1/80000s |
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 | SDXC cards | CFexA or SDXC cards |
Single or Dual Card Slots | Dual card slots | Dual card slots |
UHS card support | Dual UHS-II | UHS-II |
Connectivity Specs | OM System OM-1 II | Sony A9 III |
External Flash | Hotshoe | Hotshoe |
Studio Flash | PC Sync socket | PC Sync socket |
USB Connector | USB 3.0 | USB 3.2 |
HDMI Port | micro HDMI | full 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 | OM System OM-1 II | Sony A9 III |
Environmental Sealing | Weathersealed body | Weathersealed body |
Battery Type | OM System BLX-1 | Sony NP-FZ100 |
Battery Life (CIPA) | 500 shots per charge | 530 shots per charge |
In-Camera Charging | USB charging | USB charging |
Body Dimensions |
135 x 92 x 73 mm (5.3 x 3.6 x 2.9 in) |
136 x 97 x 83 mm (5.4 x 3.8 x 3.3 in) |
Camera Weight | 599 g (21.1 oz) | 702 g (24.8 oz) |
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