Olympus E-M10 II vs Sony A7C II
The Olympus OM-D E-M10 Mark II and the Sony Alpha A7C II are two digital cameras that were announced, respectively, in August 2015 and August 2023. Both the E-M10 II and the A7C II are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M10 II) and a full frame (A7C II) sensor. The Olympus has a resolution of 15.9 megapixels, whereas the Sony provides 32.7 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Check E-M10 II offers at
ebay.com

Check A7C II price at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M10 Mark II and the Sony Alpha A7C 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
An illustration of the physical size and weight of the Olympus E-M10 II and the Sony A7C II is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.
The E-M10 II can be obtained in three different colors (black, silver, brown), while the A7C II is available in two color-versions (black, silver).



If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7C II is notably smaller (12 percent) than the Olympus E-M10 II. However, the A7C II is markedly heavier (32 percent) than the E-M10 II. It is noteworthy in this context that the A7C II is splash and dust-proof, while the E-M10 II does not feature any corresponding weather-sealing.
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 (E-M10 II) and the Sony FE Lens Catalog (A7C II). 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 E-M10 II gets 320 shots out of its Olympus BLS-50 battery, while the A7C II can take 540 images on a single charge of its Sony NP-FZ100 power pack. The power pack in the A7C II can be charged via the USB port, 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 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. | Olympus E-M10 II | 120 mm | 83 mm | 47 mm | 390 g | 320 | n | Aug 2015 | EUR 599 | ebay.com | |
| 2. | Sony A7C II | 124 mm | 71 mm | 63 mm | 514 g | 540 | Y | Aug 2023 | EUR 2 399 | amazon.com | |
| 3. | Olympus E-M5 II | 124 mm | 85 mm | 45 mm | 469 g | 310 | Y | Feb 2015 | EUR 1 099 | ebay.com | |
| 4. | Olympus E-M10 | 119 mm | 82 mm | 46 mm | 396 g | 320 | n | Jan 2014 | EUR 599 | ebay.com | |
| 5. | Olympus E-M10 III | 122 mm | 84 mm | 50 mm | 410 g | 330 | n | Aug 2017 | EUR 649 | ebay.com | |
| 6. | Olympus E-P5 | 122 mm | 69 mm | 37 mm | 420 g | 330 | n | May 2013 | EUR 999 | ebay.com | |
| 7. | Olympus E-PL5 | 111 mm | 64 mm | 38 mm | 325 g | 360 | n | Sep 2012 | EUR 599 | ebay.com | |
| 8. | Olympus E-PL7 | 115 mm | 67 mm | 38 mm | 357 g | 350 | n | Aug 2014 | EUR 599 | ebay.com | |
| 9. | Olympus E-PL8 | 115 mm | 67 mm | 38 mm | 357 g | 350 | n | Sep 2016 | EUR 549 | ebay.com | |
| 10. | Olympus E-PL9 | 117 mm | 68 mm | 39 mm | 380 g | 350 | n | Feb 2018 | EUR 599 | ebay.com | |
| 11. | Olympus PEN-F | 125 mm | 72 mm | 37 mm | 427 g | 330 | n | Jan 2016 | EUR 1 199 | ebay.com | |
| 12. | Panasonic GX80 | 122 mm | 71 mm | 44 mm | 426 g | 290 | n | Apr 2016 | EUR 799 | amazon.com | |
| 13. | Sony A7 II | 127 mm | 96 mm | 60 mm | 599 g | 350 | Y | Nov 2014 | EUR 2 099 | ebay.com | |
| 14. | Sony A7 IV | 131 mm | 96 mm | 80 mm | 659 g | 580 | Y | Oct 2021 | EUR 2 799 | amazon.com | |
| 15. | Sony A7C | 124 mm | 71 mm | 60 mm | 509 g | 740 | Y | Sep 2020 | EUR 2 099 | amazon.com | |
| 16. | Sony A7R | 127 mm | 94 mm | 48 mm | 465 g | 340 | Y | Oct 2013 | EUR 2 099 | ebay.com | |
| 17. | Sony ZV-E1 | 121 mm | 72 mm | 54 mm | 483 g | 570 | Y | Mar 2023 | EUR 2 699 | amazon.com | |
| Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders. | |||||||||||
The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-M10 II was launched at a markedly lower price (by 70 percent) than the A7C 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
Sensor comparison
The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Olympus E-M10 II features a Four Thirds sensor and the Sony A7C II a full frame sensor. The sensor area in the A7C II is 281 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 E-M10 II has a native 4:3 aspect ratio, while the one in the A7C II offers a 3:2 aspect.

With 32.7MP, the A7C II offers a higher resolution than the E-M10 II (15.9MP), but the A7C II nevertheless has larger individual pixels (pixel pitch of 5.12μm versus 3.76μm for the E-M10 II) due to its larger sensor. Moreover, the A7C II is a much more recent model (by 8 years) than the E-M10 II, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. 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 Sony A7C II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7C II for good quality output (200 dots per inch) amounts to 35 x 23.4 inches or 89 x 59.3 cm, for very good quality (250 dpi) 28 x 18.7 inches or 71.2 x 47.5 cm, and for excellent quality (300 dpi) 23.4 x 15.6 inches or 59.3 x 39.6 cm. The corresponding values for the Olympus E-M10 II are 23 x 17.3 inches or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inches or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inches or 39 x 29.3 cm for excellent quality prints.
The A7C II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Olympus OM-D E-M10 Mark II has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 100-25600. The corresponding ISO settings for the Sony Alpha A7C II are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.
In terms of underlying technology, the E-M10 II is build around a CMOS sensor, while the A7C II uses a 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.

For many cameras, data on sensor performance has been reported by DXO Mark. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). 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. | Olympus E-M10 II | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 23.1 | 12.5 | 842 | 73 | |
| 2. | Sony A7C II | Full Frame | 32.7 | 7008 | 4672 | 4K/60p | 25.4 | 14.7 | 3237 | 96 | |
| 3. | Olympus E-M5 II | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 23.0 | 12.5 | 842 | 73 | |
| 4. | Olympus E-M10 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.8 | 12.3 | 884 | 72 | |
| 5. | Olympus E-M10 III | Four Thirds | 15.9 | 4608 | 3456 | 4K/30p | 23.1 | 12.8 | 1120 | 74 | |
| 6. | Olympus E-P5 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.8 | 12.4 | 895 | 72 | |
| 7. | Olympus E-PL5 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.8 | 12.3 | 889 | 72 | |
| 8. | Olympus E-PL7 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.7 | 12.4 | 873 | 72 | |
| 9. | Olympus E-PL8 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 23.0 | 12.6 | 1030 | 73 | |
| 10. | Olympus E-PL9 | Four Thirds | 15.9 | 4608 | 3456 | 4K/30p | 23.1 | 12.8 | 1162 | 74 | |
| 11. | Olympus PEN-F | Four Thirds | 20.2 | 5184 | 3888 | 1080/60p | 23.1 | 12.4 | 894 | 74 | |
| 12. | Panasonic GX80 | Four Thirds | 15.8 | 4592 | 3448 | 4K/30p | 22.9 | 12.6 | 662 | 71 | |
| 13. | Sony A7 II | Full Frame | 24.0 | 6000 | 4000 | 1080/60p | 24.9 | 13.6 | 2449 | 90 | |
| 14. | Sony A7 IV | Full Frame | 32.7 | 7008 | 4672 | 4K/60p | 25.4 | 14.7 | 3379 | 97 | |
| 15. | Sony A7C | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3407 | 95 | |
| 16. | Sony A7R | Full Frame | 36.2 | 7360 | 4912 | 1080/60p | 25.6 | 14.1 | 2746 | 95 | |
| 17. | Sony ZV-E1 | Full Frame | 12.0 | 4240 | 2832 | 4K/60p | 25.4 | 14.6 | 3181 | 96 | |
| 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 have a sensor with sufficiently fast read-out times for moving pictures, but the A7C II provides a better video resolution than the E-M10 II. It can shoot movie footage at 4K/60p, while the Olympus is limited to 1080/60p.
Feature comparison
Beyond body and sensor, cameras can and do differ across a range of features. The E-M10 II and the A7C II are similar in the sense that both feature an electronic viewfinder, which is helpful when framing images in bright sunlight. Moreover, their viewfinders offer an identical resolution of 2360k dots. The table below summarizes some of the other core capabilities of the Olympus E-M10 II and Sony A7C 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. | Olympus E-M10 II | 2360 | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.0/s | Y | Y | |
| 2. | Sony A7C II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/4000s | 10.0/s | n | Y | |
| 3. | Olympus E-M5 II | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 4. | Olympus E-M10 | 1440 | n | 3.0 / 1037 | tilting | Y | 1/4000s | 8.0/s | Y | Y | |
| 5. | Olympus E-M10 III | 2360 | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.6/s | Y | Y | |
| 6. | Olympus E-P5 | optional | n | 3.0 / 1037 | tilting | Y | 1/8000s | 9.0/s | Y | Y | |
| 7. | Olympus E-PL5 | optional | n | 3.0 / 460 | tilting | Y | 1/4000s | 8.0/s | n | Y | |
| 8. | Olympus E-PL7 | optional | n | 3.0 / 1037 | tilting | Y | 1/4000s | 8.0/s | n | Y | |
| 9. | Olympus E-PL8 | optional | n | 3.0 / 1037 | tilting | Y | 1/4000s | 8.0/s | n | Y | |
| 10. | Olympus E-PL9 | none | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.6/s | Y | Y | |
| 11. | Olympus PEN-F | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 12. | Panasonic GX80 | 2765 | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.0/s | Y | Y | |
| 13. | Sony A7 II | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 5.0/s | n | Y | |
| 14. | Sony A7 IV | 3686 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
| 15. | Sony A7C | 2360 | n | 3.0 / 922 | swivel | Y | 1/4000s | 10.0/s | n | Y | |
| 16. | Sony A7R | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 4.0/s | n | n | |
| 17. | Sony ZV-E1 | none | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | 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 E-M10 II has one, while the A7C II does not. While the built-in flash of the E-M10 II is not very powerful, it can at times be useful as a fill-in light.
The A7C II has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the E-M10 II 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, 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 Olympus E-M10 II and the Sony A7C 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.
The E-M10 II writes its imaging data to SDXC cards, while the A7C II uses SDXC or Memory Stick PRO Duo cards. The A7C II supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the E-M10 II 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 Olympus OM-D E-M10 Mark II and Sony Alpha A7C 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. | Olympus E-M10 II | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 2. | Sony A7C II | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y | |
| 3. | Olympus E-M5 II | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 4. | Olympus E-M10 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 5. | Olympus E-M10 III | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 6. | Olympus E-P5 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 7. | Olympus E-PL5 | Y | stereo / mono | - | - | mini | 2.0 | - | - | - | |
| 8. | Olympus E-PL7 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 9. | Olympus E-PL8 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 10. | Olympus E-PL9 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | Y | |
| 11. | Olympus PEN-F | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 12. | Panasonic GX80 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
| 13. | Sony A7 II | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 14. | Sony A7 IV | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
| 15. | Sony A7C | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y | |
| 16. | Sony A7R | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
| 17. | Sony ZV-E1 | Y | stereo / mono | Y | Y | micro | 3.2 | Y | - | Y |
It is notable that the A7C II has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The E-M10 II lacks such a headphone port.
The A7C II is a recent model that features in the current product line-up of Sony. In contrast, the E-M10 II has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-M10 II was succeeded by the Olympus E-M10 III. Further information on the features and operation of the E-M10 II and A7C II can be found, respectively, in the Olympus E-M10 II Manual (free pdf) or the online Sony A7C II Manual.
Review summary
So what conclusions can be drawn? Is the Olympus E-M10 II better than the Sony A7C II or vice versa? Below is a summary of the relative strengths of each of the two contestants.

Advantages of the Olympus OM-D E-M10 Mark II:
- Less heavy: Is lighter (by 124g or 24 percent) and hence easier to carry around.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (70 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in August 2015).

Reasons to prefer the Sony Alpha A7C II:
- More detail: Has more megapixels (32.7 vs 15.9MP), which boosts linear resolution by 46%.
- Better image quality: Is equipped with a larger and more technologically advanced sensor.
- Richer colors: The sensor size advantage translates into images with better, more accurate colors.
- More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
- Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
- Better video: Provides higher definition movie capture (4K/60p vs 1080/60p).
- 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.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.7x vs 0.62x).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (10 vs 8 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (124x71mm vs 120x83mm) and will fit more readily into a bag.
- Longer lasting: Gets more shots (540 versus 320) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Faster data transfer: Supports a more advanced USB protocol (3.2 vs 2.0).
- 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 8 years of technical progress since the E-M10 II launch.
If the count of relative strengths (bullet points above) is taken as a measure, the A7C II is the clear winner of the contest (21 : 4 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 Olympus E-M10 II and the Sony A7C 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the E-M10 II or the A7C II. 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 why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

| Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Olympus E-M10 II | 4.5/5 | + + | .. | 80/100 | 5/5 | 5/5 | Aug 2015 | EUR 599 | ebay.com | |
| 2. | Sony A7C II | 4/5 | .. | 4/5 | 87/100 | 4.5/5 | 4.5/5 | Aug 2023 | EUR 2 399 | amazon.com | |
| 3. | Olympus E-M5 II | 5/5 | + + | 4.5/5 | 81/100 | 5/5 | 5/5 | Feb 2015 | EUR 1 099 | ebay.com | |
| 4. | Olympus E-M10 | 4/5 | .. | .. | 80/100 | 5/5 | 5/5 | Jan 2014 | EUR 599 | ebay.com | |
| 5. | Olympus E-M10 III | .. | + | 5/5 | 80/100 | 4.5/5 | 4.5/5 | Aug 2017 | EUR 649 | ebay.com | |
| 6. | Olympus E-P5 | 5/5 | + + | .. | 78/100 | 4.5/5 | 5/5 | May 2013 | EUR 999 | ebay.com | |
| 7. | Olympus E-PL5 | 3/5 | + + | .. | .. | 4.5/5 | 4.5/5 | Sep 2012 | EUR 599 | ebay.com | |
| 8. | Olympus E-PL7 | 4/5 | + | .. | .. | 5/5 | 4/5 | Aug 2014 | EUR 599 | ebay.com | |
| 9. | Olympus E-PL8 | .. | .. | .. | .. | 4.5/5 | 4/5 | Sep 2016 | EUR 549 | ebay.com | |
| 10. | Olympus E-PL9 | .. | + | .. | .. | 4.5/5 | 4/5 | Feb 2018 | EUR 599 | ebay.com | |
| 11. | Olympus PEN-F | .. | .. | 4/5 | 82/100 | 4.5/5 | 5/5 | Jan 2016 | EUR 1 199 | ebay.com | |
| 12. | Panasonic GX80 | 4.5/5 | + + | .. | 82/100 | 5/5 | 5/5 | Apr 2016 | EUR 799 | amazon.com | |
| 13. | Sony A7 II | 5/5 | + | 4/5 | 82/100 | 4.5/5 | 5/5 | Nov 2014 | EUR 2 099 | ebay.com | |
| 14. | Sony A7 IV | 5/5 | + + | 4.5/5 | 89/100 | 4.5/5 | 4.5/5 | Oct 2021 | EUR 2 799 | amazon.com | |
| 15. | Sony A7C | 3.5/5 | .. | 3.5/5 | 86/100 | 4/5 | 4/5 | Sep 2020 | EUR 2 099 | amazon.com | |
| 16. | Sony A7R | 5/5 | + + | .. | 82/100 | 4.5/5 | 5/5 | Oct 2013 | EUR 2 099 | ebay.com | |
| 17. | Sony ZV-E1 | .. | + | 4/5 | .. | .. | 4.5/5 | Mar 2023 | EUR 2 699 | amazon.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

Check E-M10 II offers at
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Check A7C II price at
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- Olympus E-M10 II vs Panasonic FZ330
- Sony A7C II vs Sony RX10 III
Specifications: Olympus E-M10 II vs Sony A7C 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 | Olympus E-M10 II | Sony A7C II |
|---|---|---|
| Camera Type | Mirrorless system camera | Mirrorless system camera |
| Camera Lens | Micro Four Thirds lenses | Sony E mount lenses |
| Launch Date | August 2015 | August 2023 |
| Launch Price | USD 649 | USD 2,199 |
| Sensor Specs | Olympus E-M10 II | Sony A7C II |
| Sensor Technology | CMOS | BSI-CMOS |
| Sensor Format | Four Thirds Sensor | Full Frame Sensor |
| Sensor Size | 17.3 x 13.0 mm | 35.9 x 23.9 mm |
| Sensor Area | 224.9 mm2 | 858.01 mm2 |
| Sensor Diagonal | 21.6 mm | 43.1 mm |
| Crop Factor | 2.0x | 1.0x |
| Sensor Resolution | 15.9 Megapixels | 32.7 Megapixels |
| Image Resolution | 4608 x 3456 pixels | 7008 x 4672 pixels |
| Pixel Pitch | 3.76 μm | 5.12 μm |
| Pixel Density | 7.08 MP/cm2 | 3.82 MP/cm2 |
| Moiré control | no AA filter | no AA filter |
| Movie Capability | 1080/60p Video | 4K/60p Video |
| ISO Setting | 200 - 25,600 ISO | 100 - 51,200 ISO |
| ISO Boost | 100 - 25,600 ISO | 50 - 204,800 ISO |
| Image Processor | TruePic VII | BIONZ XR |
| DXO Sensor Quality (score) | 73 | .. |
| DXO Color Depth (bits) | 23.1 | .. |
| DXO Dynamic Range (EV) | 12.5 | .. |
| DXO Low Light (ISO) | 842 | .. |
| Screen Specs | Olympus E-M10 II | Sony A7C II |
| Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
| Viewfinder Field of View | 100% | 100% |
| Viewfinder Magnification | 0.62x | 0.7x |
| Viewfinder Resolution | 2360k dots | 2360k dots |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.0inch | 3.0inch |
| LCD Resolution | 1040k dots | 1037k dots |
| LCD Attachment | Tilting screen | Swivel screen |
| Touch Input | Touchscreen | Touchscreen |
| Shooting Specs | Olympus E-M10 II | Sony A7C II |
| Focus System | Contrast-detect AF | On-Sensor Phase-detect |
| Manual Focusing Aid | Focus Peaking | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/4000s | 1/4000s |
| Continuous Shooting | 8 shutter flaps/s | 10 shutter flaps/s |
| Electronic Shutter | up to 1/16000s | up to 1/8000s |
| Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
| Image Stabilization | In-body stabilization | In-body stabilization |
| Fill Flash | Built-in Flash | no On-Board Flash |
| Storage Medium | SDXC cards | MS or SDXC cards |
| Single or Dual Card Slots | Single card slot | Single card slot |
| UHS card support | UHS-I | UHS-II |
| Connectivity Specs | Olympus E-M10 II | Sony A7C II |
| External Flash | Hotshoe | Hotshoe |
| USB Connector | USB 2.0 | USB 3.2 |
| 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 |
| Bluetooth Support | no Bluetooth | Bluetooth built-in |
| Body Specs | Olympus E-M10 II | Sony A7C II |
| Environmental Sealing | not weather sealed | Weathersealed body |
| Battery Type | Olympus BLS-50 | Sony NP-FZ100 |
| Battery Life (CIPA) | 320 shots per charge | 540 shots per charge |
| In-Camera Charging | no USB charging | USB charging |
| Body Dimensions |
120 x 83 x 47 mm (4.7 x 3.3 x 1.9 in) |
124 x 71 x 63 mm (4.9 x 2.8 x 2.5 in) |
| Camera Weight | 390 g (13.8 oz) | 514 g (18.1 oz) |

Check E-M10 II offers at
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Check A7C II price at
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