Nikon Z5 II vs OM System OM-5 II
The Nikon Z5 II and the OM System OM-5 II are two digital cameras that were officially introduced, respectively, in April 2025 and June 2025. Both the Z5 II and the OM-5 II are mirrorless interchangeable lens cameras that are based on a full frame (Z5 II) and a Four Thirds (OM-5 II) sensor. The Nikon has a resolution of 24.4 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.

Check Z5 II price at
amazon.com

Check OM-5 II price at
amazon.com
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon Z5 II and the OM System OM-5 II? 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 Nikon Z5 II and the OM System OM-5 II. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter.
The OM-5 II can be obtained in three different colors (black, silver, beige), while the Z5 II 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 OM System OM-5 II is notably smaller (21 percent) than the Nikon Z5 II. Moreover, the OM-5 II is substantially lighter (41 percent) than the Z5 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.
Concerning battery life, the Z5 II gets 330 shots out of its Nikon EN-EL15c battery, while the OM-5 II can take 310 images on a single charge of its OM System BLS-50 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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. | Nikon Z5 II | 134 mm | 101 mm | 72 mm | 700 g | 330 | Y | Apr 2025 | US$ 1 699 | amazon.com | |
| 2. | OM System OM-5 II | 125 mm | 85 mm | 50 mm | 414 g | 310 | Y | Jun 2025 | US$ 1 199 | amazon.com | |
| 3. | Nikon Z5 | 134 mm | 101 mm | 67 mm | 675 g | 470 | Y | Jul 2020 | US$ 1 399 | ebay.com | |
| 4. | Nikon Z6 | 134 mm | 101 mm | 67 mm | 675 g | 310 | Y | Aug 2018 | US$ 1 999 | ebay.com | |
| 5. | Nikon Z6 II | 134 mm | 101 mm | 70 mm | 705 g | 410 | Y | Oct 2020 | US$ 1 999 | amazon.com | |
| 6. | Nikon Z6 III | 139 mm | 102 mm | 74 mm | 670 g | 380 | Y | Jun 2024 | US$ 2 499 | amazon.com | |
| 7. | Nikon Z7 II | 134 mm | 101 mm | 70 mm | 705 g | 420 | Y | Oct 2020 | US$ 2 999 | amazon.com | |
| 8. | Nikon Zf | 144 mm | 103 mm | 49 mm | 710 g | 380 | Y | Sep 2023 | US$ 1 999 | amazon.com | |
| 9. | Olympus E-M5 III | 125 mm | 85 mm | 50 mm | 414 g | 310 | Y | Oct 2019 | US$ 1 199 | ebay.com | |
| 10. | OM System OM-1 II | 135 mm | 92 mm | 73 mm | 599 g | 500 | Y | Jan 2024 | US$ 2 399 | amazon.com | |
| 11. | OM System OM-3 | 139 mm | 89 mm | 46 mm | 496 g | 590 | Y | Feb 2025 | US$ 1 999 | amazon.com | |
| 12. | OM System OM-5 | 125 mm | 85 mm | 50 mm | 414 g | 310 | Y | Oct 2022 | US$ 1 199 | amazon.com | |
| 13. | Panasonic G9 II | 134 mm | 102 mm | 90 mm | 658 g | 390 | Y | Sep 2023 | US$ 1 899 | amazon.com | |
| 14. | Panasonic GH5 II | 139 mm | 98 mm | 87 mm | 727 g | 400 | Y | May 2021 | US$ 1 699 | amazon.com | |
| 15. | Panasonic GX8 | 133 mm | 78 mm | 63 mm | 487 g | 330 | Y | Jul 2015 | US$ 1 199 | ebay.com | |
| 16. | Panasonic S5 II | 134 mm | 102 mm | 90 mm | 740 g | 370 | Y | Jan 2023 | US$ 1 999 | amazon.com | |
| 17. | Pentax K-3 III | 135 mm | 104 mm | 74 mm | 820 g | 800 | Y | Mar 2021 | US$ 1 999 | 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 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 OM-5 II was launched at a markedly lower price (by 29 percent) than the Z5 II, which puts it into a different market segment. 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.
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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its 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 Nikon Z5 II features a full frame sensor and the OM System OM-5 II a Four Thirds sensor. The sensor area in the OM-5 II 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 Z5 II has a native 3:2 aspect ratio, while the one in the OM-5 II offers a 4:3 aspect.

With 24.4MP, the Z5 II offers a higher resolution than the OM-5 II (20.2MP), but the Z5 II nevertheless has larger individual pixels (pixel pitch of 5.93μm versus 3.34μm for the OM-5 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-5 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Nikon Z5 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the Z5 II for good quality output (200 dots per inch) amounts to 30.2 x 20.2 inches or 76.8 x 51.2 cm, for very good quality (250 dpi) 24.2 x 16.1 inches or 61.4 x 41 cm, and for excellent quality (300 dpi) 20.2 x 13.4 inches or 51.2 x 34.1 cm. The corresponding values for the OM System OM-5 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 Z5 II, the OM-5 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 Nikon Z5 II has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800. The corresponding ISO settings for the OM System OM-5 II are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 64-25600.
In terms of underlying technology, the Z5 II is build around a BSI-CMOS sensor, while the OM-5 II uses a 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.

For many cameras, data on sensor performance has been reported by DXO Mark. 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. | Nikon Z5 II | Full Frame | 24.4 | 6048 | 4032 | 4K/60p | 25.4 | 14.8 | 3398 | 97 | |
| 2. | OM System OM-5 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.4 | 13.7 | 1889 | 78 | |
| 3. | Nikon Z5 | Full Frame | 24.2 | 6016 | 4016 | 4K/30p | 25.3 | 14.3 | 2929 | 95 | |
| 4. | Nikon Z6 | Full Frame | 24.3 | 6048 | 4024 | 4K/30p | 25.3 | 14.3 | 3299 | 95 | |
| 5. | Nikon Z6 II | Full Frame | 24.3 | 6048 | 4024 | 4K/60p | 25.0 | 14.4 | 3303 | 94 | |
| 6. | Nikon Z6 III | Full Frame | 24.3 | 6048 | 4024 | 6K/60p | 25.4 | 14.8 | 3318 | 97 | |
| 7. | Nikon Z7 II | Full Frame | 45.4 | 8256 | 5504 | 4K/60p | 26.3 | 14.7 | 2841 | 100 | |
| 8. | Nikon Zf | Full Frame | 24.3 | 6048 | 4024 | 4K/60p | 25.4 | 14.7 | 3243 | 96 | |
| 9. | Olympus E-M5 III | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.3 | 13.1 | 1324 | 76 | |
| 10. | OM System OM-1 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.6 | 1749 | 78 | |
| 11. | OM System OM-3 | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.4 | 13.7 | 1852 | 78 | |
| 12. | OM System OM-5 | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.4 | 13.4 | 1622 | 78 | |
| 13. | Panasonic G9 II | Four Thirds | 25.0 | 5776 | 4336 | 5.7K/60p | 23.4 | 13.5 | 1710 | 78 | |
| 14. | Panasonic GH5 II | Four Thirds | 20.2 | 5184 | 3888 | 4K/60p | 23.7 | 13.1 | 1136 | 79 | |
| 15. | Panasonic GX8 | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.5 | 12.6 | 806 | 75 | |
| 16. | Panasonic S5 II | Full Frame | 24.0 | 6000 | 4000 | 6K/30p | 25.4 | 14.6 | 3158 | 96 | |
| 17. | Pentax K-3 III | APS-C | 25.6 | 6192 | 4128 | 4K/30p | 24.2 | 13.7 | 2083 | 85 | |
| 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. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the Z5 II provides a higher frame rate than the OM-5 II. It can shoot video footage at 4K/60p, while the OM System is limited to 4K/30p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a range of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the Z5 II offers a substantially higher resolution than the one in the OM-5 II (3690k vs 2360k dots). The table below summarizes some of the other core capabilities of the Nikon Z5 II and OM System OM-5 II in connection with corresponding information for a sample of similar cameras.

| Camera Model |
Viewfinder (Type or 000 dots) |
Control Panel (yes/no) |
LCD Specifications (inch/000 dots) |
LCD Attach- ment |
Touch Screen (yes/no) |
Max Shutter Speed * |
Max Shutter Flaps * |
Built-in Flash (yes/no) |
Built-in Image Stab |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Nikon Z5 II | 3690 | n | 3.2 / 2100 | swivel | Y | 1/8000s | 14.0/s | n | Y | |
| 2. | OM System OM-5 II | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 3. | Nikon Z5 | 3690 | n | 3.2 / 1040 | tilting | Y | 1/8000s | 4.5/s | n | Y | |
| 4. | Nikon Z6 | 3690 | Y | 3.2 / 2100 | tilting | Y | 1/8000s | 12.0/s | n | Y | |
| 5. | Nikon Z6 II | 3690 | Y | 3.2 / 2100 | tilting | Y | 1/8000s | 14.0/s | n | Y | |
| 6. | Nikon Z6 III | 5760 | Y | 3.2 / 2100 | swivel | Y | 1/8000s | 14.0/s | n | Y | |
| 7. | Nikon Z7 II | 3690 | Y | 3.2 / 2100 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
| 8. | Nikon Zf | 3690 | n | 3.2 / 2100 | swivel | Y | 1/8000s | 14.0/s | n | Y | |
| 9. | Olympus E-M5 III | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 10. | OM System OM-1 II | 5760 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 11. | OM System OM-3 | 2360 | n | 3.0 / 1640 | swivel | Y | 1/8000s | 6.0/s | n | Y | |
| 12. | OM System OM-5 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 13. | Panasonic G9 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 14. | Panasonic GH5 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 12.0/s | n | Y | |
| 15. | Panasonic GX8 | 2360 | n | 3.0 / 1040 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 16. | Panasonic S5 II | 3680 | n | 3.0 / 1840 | swivel | Y | 1/8000s | 9.0/s | n | Y | |
| 17. | Pentax K-3 III | optical | Y | 3.2 / 1620 | fixed | Y | 1/8000s | 12.0/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 Nikon Z5 II and the OM System OM-5 II 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 Z5 II and the OM-5 II write their files to SDXC cards. The Z5 II features dual card slots, which can be very useful in case a memory card fails. In contrast, the OM-5 II only has one slot. 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 Nikon Z5 II and OM System OM-5 II 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. | Nikon Z5 II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 2. | OM System OM-5 II | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
| 3. | Nikon Z5 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 4. | Nikon Z6 | Y | stereo / mono | Y | Y | micro | 3.1 | Y | - | Y | |
| 5. | Nikon Z6 II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 6. | Nikon Z6 III | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 7. | Nikon Z7 II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 8. | Nikon Zf | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 9. | Olympus E-M5 III | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
| 10. | OM System OM-1 II | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
| 11. | OM System OM-3 | Y | stereo / mono | Y | Y | micro | 3.0 | Y | - | Y | |
| 12. | OM System OM-5 | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
| 13. | Panasonic G9 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 14. | Panasonic GH5 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 15. | Panasonic GX8 | Y | stereo / mono | Y | - | micro | 2.0 | Y | Y | - | |
| 16. | Panasonic S5 II | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 17. | Pentax K-3 III | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y |
It is notable that the Z5 II has a headphone jack, which is not present on the OM-5 II This port makes it possible to attach external headphones and monitor the quality of sound during the recording process.
Both the Z5 II and the OM-5 II are recent models that are part of the current product line-up. The Z5 II replaced the earlier Nikon Z5, while the OM-5 II followed on from the OM System OM-5. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and OM System websites.
Review summary
So what conclusions can be drawn? Is the Nikon Z5 II better than the OM System OM-5 II or vice versa? The listing below highlights the relative strengths of the two models.

Advantages of the Nikon Z5 II:
- More detail: Offers more megapixels (24.4 vs 20.2MP) with a 12% 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.
- Better video: Provides higher movie framerates (4K/60p versus 4K/30p).
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More detailed viewfinder: Has higher resolution electronic viewfinder (3690k vs 2360k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.80x vs 0.68x).
- 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 1040k dots).
- Faster burst: Shoots at higher frequency (14 vs 10 flaps/sec) to capture the decisive moment.
- Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.

Reasons to prefer the OM System OM-5 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.
- More compact: Is smaller (125x85mm vs 134x101mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 286g or 41 percent) and is thus easier to take along.
- More affordable: Was introduced into a lower priced category (29 percent cheaper at launch).
If the number of relative strengths (bullet points above) is taken as a guide, the Z5 II is the clear winner of the match-up (15 : 5 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 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 Nikon Z5 II and the OM System OM-5 II 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 technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the Z5 II or the OM-5 II perform in practice. 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. | Nikon Z5 II | .. | .. | .. | .. | .. | .. | Apr 2025 | US$ 1 699 | amazon.com | |
| 2. | OM System OM-5 II | .. | .. | .. | .. | .. | .. | Jun 2025 | US$ 1 199 | amazon.com | |
| 3. | Nikon Z5 | 4/5 | .. | 4/5 | 89/100 | 4.5/5 | 4/5 | Jul 2020 | US$ 1 399 | ebay.com | |
| 4. | Nikon Z6 | 5/5 | .. | 5/5 | 89/100 | 4.5/5 | 5/5 | Aug 2018 | US$ 1 999 | ebay.com | |
| 5. | Nikon Z6 II | 4.5/5 | .. | 4/5 | 89/100 | 4.5/5 | 4.5/5 | Oct 2020 | US$ 1 999 | amazon.com | |
| 6. | Nikon Z6 III | .. | .. | .. | .. | .. | .. | Jun 2024 | US$ 2 499 | amazon.com | |
| 7. | Nikon Z7 II | 4.5/5 | .. | 4.5/5 | .. | 4.5/5 | 4.5/5 | Oct 2020 | US$ 2 999 | amazon.com | |
| 8. | Nikon Zf | 4.5/5 | .. | 4.5/5 | 90/100 | 4.5/5 | 5/5 | Sep 2023 | US$ 1 999 | amazon.com | |
| 9. | Olympus E-M5 III | 5/5 | + | 5/5 | 82/100 | 4.5/5 | 4.5/5 | Oct 2019 | US$ 1 199 | ebay.com | |
| 10. | OM System OM-1 II | .. | .. | .. | .. | .. | .. | Jan 2024 | US$ 2 399 | amazon.com | |
| 11. | OM System OM-3 | .. | .. | .. | 86/100 | .. | .. | Feb 2025 | US$ 1 999 | amazon.com | |
| 12. | OM System OM-5 | 5/5 | .. | 4.5/5 | 83/100 | 5/5 | 4.5/5 | Oct 2022 | US$ 1 199 | amazon.com | |
| 13. | Panasonic G9 II | 5/5 | .. | 4.5/5 | 87/100 | .. | 4.5/5 | Sep 2023 | US$ 1 899 | amazon.com | |
| 14. | Panasonic GH5 II | 4.5/5 | .. | 4.5/5 | 85/100 | 4.5/5 | 5/5 | May 2021 | US$ 1 699 | amazon.com | |
| 15. | Panasonic GX8 | 5/5 | + | .. | 82/100 | 4.5/5 | 4.5/5 | Jul 2015 | US$ 1 199 | ebay.com | |
| 16. | Panasonic S5 II | 4.5/5 | + + | 5/5 | 90/100 | 4.5/5 | 5/5 | Jan 2023 | US$ 1 999 | amazon.com | |
| 17. | Pentax K-3 III | 4/5 | .. | 3/5 | .. | 4.5/5 | .. | Mar 2021 | US$ 1 999 | amazon.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time 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 Z5 II price at
amazon.com

Check OM-5 II price at
amazon.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 use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon R7 vs OM System OM-5 II
- Fujifilm GFX 50S II vs Nikon Z5 II
- Fujifilm X-E4 vs Nikon Z5 II
- Leica M11 vs Nikon Z5 II
- Leica Q2 vs Nikon Z5 II
- Nikon D850 vs Nikon Z5 II
- Nikon Z5 II vs Sony A7R IV
- OM System OM-1 II vs OM System OM-5 II
- OM System OM-5 II vs OM System TG-7
- OM System OM-5 II vs Panasonic G9 II
- OM System OM-5 II vs Sony A7R IVA
- Olympus E-M10 II vs OM System OM-5 II
Specifications: Nikon Z5 II vs OM System OM-5 II
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 | Nikon Z5 II | OM System OM-5 II |
|---|---|---|
| Camera Type | Mirrorless system camera | Mirrorless system camera |
| Camera Lens | Nikon Z mount lenses | Micro Four Thirds lenses |
| Launch Date | April 2025 | June 2025 |
| Launch Price | USD 1,699 | USD 1,199 |
| Sensor Specs | Nikon Z5 II | OM System OM-5 II |
| Sensor Technology | BSI-CMOS | CMOS |
| Sensor Format | Full Frame Sensor | Four Thirds Sensor |
| Sensor Size | 35.9 x 23.9 mm | 17.3 x 13.0 mm |
| Sensor Area | 858.01 mm2 | 224.9 mm2 |
| Sensor Diagonal | 43.1 mm | 21.6 mm |
| Crop Factor | 1.0x | 2.0x |
| Sensor Resolution | 24.4 Megapixels | 20.2 Megapixels |
| Image Resolution | 6048 x 4032 pixels | 5184 x 3888 pixels |
| Pixel Pitch | 5.93 μm | 3.34 μm |
| Pixel Density | 2.84 MP/cm2 | 8.96 MP/cm2 |
| Moiré control | Anti-Alias filter | no AA filter |
| Movie Capability | 4K/60p Video | 4K/30p Video |
| ISO Setting | 100 - 51,200 ISO | 200 - 25,600 ISO |
| ISO Boost | 50 - 204,800 ISO | 64 - 25,600 ISO |
| Image Processor | EXPEED 7 | TruePic IX |
| Screen Specs | Nikon Z5 II | OM System OM-5 II |
| Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.80x | 0.68x |
| Viewfinder Resolution | 3690k dots | 2360k dots |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.2inch | 3.0inch |
| LCD Resolution | 2100k dots | 1040k dots |
| LCD Attachment | Swivel screen | Swivel screen |
| Touch Input | Touchscreen | Touchscreen |
| Shooting Specs | Nikon Z5 II | OM System OM-5 II |
| 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 | 14 shutter flaps/s | 10 shutter flaps/s |
| Electronic Shutter | up to 1/8000s | 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 | SDXC cards | SDXC cards |
| Single or Dual Card Slots | Dual card slots | Single card slot |
| UHS card support | Dual UHS-II | UHS-II |
| Connectivity Specs | Nikon Z5 II | OM System OM-5 II |
| External Flash | Hotshoe | Hotshoe |
| USB Connector | USB 3.2 | USB 2.0 |
| HDMI Port | micro HDMI | micro HDMI |
| Microphone Port | External MIC port | External MIC port |
| Headphone Socket | Headphone port | no Headphone port |
| Wifi Support | Wifi built-in | Wifi built-in |
| Bluetooth Support | Bluetooth built-in | Bluetooth built-in |
| Body Specs | Nikon Z5 II | OM System OM-5 II |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Nikon EN-EL15c | OM System BLS-50 |
| Battery Life (CIPA) | 330 shots per charge | 310 shots per charge |
| In-Camera Charging | USB charging | USB charging |
| Body Dimensions |
134 x 101 x 72 mm (5.3 x 4.0 x 2.8 in) |
125 x 85 x 50 mm (4.9 x 3.3 x 2.0 in) |
| Camera Weight | 700 g (24.7 oz) | 414 g (14.6 oz) |

Check Z5 II price at
amazon.com

Check OM-5 II price at
amazon.com
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.

