Sony A7 III vs Olympus E-M10 III
The Sony Alpha A7 III and the Olympus OM-D E-M10 Mark III are two digital cameras that were revealed to the public, respectively, in February 2018 and August 2017. Both the A7 III and the E-M10 III are mirrorless interchangeable lens cameras that are based on a full frame (A7 III) and a Four Thirds (E-M10 III) sensor. The Sony has a resolution of 24 megapixels, whereas the Olympus provides 15.9 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 Sony Alpha A7 III and the Olympus OM-D E-M10 Mark 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
The physical size and weight of the Sony A7 III and the Olympus E-M10 III are illustrated 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 dimensions are rounded to the nearest millimeter.
The E-M10 III can be obtained in two different colors (black, silver), while the A7 III 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 Olympus E-M10 III is notably smaller (16 percent) than the Sony A7 III. Moreover, the E-M10 III is substantially lighter (37 percent) than the A7 III. It is worth mentioning in this context that the A7 III is splash and dust resistant, while the E-M10 III 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 Sony FE Lens Catalog (A7 III) and the Micro Four Thirds Lens Catalog (E-M10 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 A7 III gets 610 shots out of its Sony NP-FZ100 battery, while the E-M10 III can take 330 images on a single charge of its Olympus BLS-50 power pack. The power pack in the A7 III can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.
Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price (USD) |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Sony A7 III | 127 mm | 96 mm | 74 mm | 650 g | 610 | Y | Feb 2018 | 1,999 | amazon.com | |
2. | Olympus E-M10 III | 122 mm | 84 mm | 50 mm | 410 g | 330 | n | Aug 2017 | 649 | ebay.com | |
3. | Canon 6D Mark II | 144 mm | 111 mm | 75 mm | 765 g | 1200 | Y | Jun 2017 | 1,999 | amazon.com | |
4. | Nikon Z6 | 134 mm | 101 mm | 67 mm | 675 g | 310 | Y | Aug 2018 | 1,999 | ebay.com | |
5. | Olympus E-M10 II | 120 mm | 83 mm | 47 mm | 390 g | 320 | n | Aug 2015 | 649 | ebay.com | |
6. | Olympus E-M10 IV | 122 mm | 84 mm | 49 mm | 383 g | 360 | n | Aug 2020 | 699 | amazon.com | |
7. | Olympus E-PL8 | 115 mm | 67 mm | 38 mm | 357 g | 350 | n | Sep 2016 | 549 | ebay.com | |
8. | Olympus E-PL9 | 117 mm | 68 mm | 39 mm | 380 g | 350 | n | Feb 2018 | 599 | ebay.com | |
9. | Olympus E-PL10 | 117 mm | 68 mm | 39 mm | 380 g | 350 | n | Oct 2019 | 599 | ebay.com | |
10. | Sony A7 II | 127 mm | 96 mm | 60 mm | 599 g | 350 | Y | Nov 2014 | 1,999 | ebay.com | |
11. | Sony A7 IV | 131 mm | 96 mm | 80 mm | 659 g | 580 | Y | Oct 2021 | 2,499 | amazon.com | |
12. | Sony A7C | 124 mm | 71 mm | 60 mm | 509 g | 740 | Y | Sep 2020 | 1,799 | amazon.com | |
13. | Sony A7R III | 127 mm | 96 mm | 74 mm | 650 g | 650 | Y | Oct 2017 | 3,199 | ebay.com | |
14. | Sony A7R IIIA | 127 mm | 96 mm | 74 mm | 650 g | 650 | Y | Apr 2021 | 3,199 | amazon.com | |
15. | Sony A7R IV | 129 mm | 96 mm | 78 mm | 665 g | 670 | Y | Jul 2019 | 3,499 | ebay.com | |
16. | Sony A9 | 127 mm | 96 mm | 63 mm | 673 g | 650 | Y | Apr 2017 | 4,499 | ebay.com | |
17. | Sony A9 II | 129 mm | 96 mm | 76 mm | 678 g | 690 | Y | Oct 2019 | 4,499 | 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The E-M10 III was launched at a markedly lower price (by 68 percent) than the A7 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
Sensor comparison
The size of the imaging sensor is a crucial determinant of image quality. 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Sony A7 III features a full frame sensor and the Olympus E-M10 III a Four Thirds sensor. The sensor area in the E-M10 III is 73 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 A7 III has a native 3:2 aspect ratio, while the one in the E-M10 III offers a 4:3 aspect.
With 24MP, the A7 III offers a higher resolution than the E-M10 III (15.9MP), but the A7 III nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 3.76μm for the E-M10 III) due to its larger sensor. Moreover, the A7 III is a somewhat more recent model (by 5 months) than the E-M10 III, and its sensor might 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 E-M10 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A7 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 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 Olympus E-M10 III 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 A7 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Sony Alpha A7 III 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 Olympus OM-D E-M10 Mark III are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.
In terms of underlying technology, the A7 III is build around a BSI-CMOS sensor, while the E-M10 III 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.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The 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. | Sony A7 III | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3730 | 96 | |
2. | Olympus E-M10 III | Four Thirds | 15.9 | 4608 | 3456 | 4K/30p | 23.1 | 12.8 | 1120 | 74 | |
3. | Canon 6D Mark II | Full Frame | 26.0 | 6240 | 4160 | 1080/60p | 24.4 | 11.9 | 2862 | 85 | |
4. | Nikon Z6 | Full Frame | 24.3 | 6048 | 4024 | 4K/30p | 25.3 | 14.3 | 3299 | 95 | |
5. | Olympus E-M10 II | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 23.1 | 12.5 | 842 | 73 | |
6. | Olympus E-M10 IV | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.3 | 13.2 | 1402 | 76 | |
7. | Olympus E-PL8 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 23.0 | 12.6 | 1030 | 73 | |
8. | Olympus E-PL9 | Four Thirds | 15.9 | 4608 | 3456 | 4K/30p | 23.1 | 12.8 | 1162 | 74 | |
9. | Olympus E-PL10 | Four Thirds | 15.9 | 4608 | 3456 | 4K/30p | 23.3 | 13.1 | 1324 | 76 | |
10. | Sony A7 II | Full Frame | 24.0 | 6000 | 4000 | 1080/60p | 24.9 | 13.6 | 2449 | 90 | |
11. | Sony A7 IV | Full Frame | 32.7 | 7008 | 4672 | 4K/60p | 25.4 | 14.7 | 3379 | 97 | |
12. | Sony A7C | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3407 | 95 | |
13. | Sony A7R III | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
14. | Sony A7R IIIA | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
15. | Sony A7R IV | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 26.0 | 14.8 | 3344 | 99 | |
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 are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (4K/30p).
Feature comparison
Beyond 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 E-M10 III offers a slightly higher resolution than the one in the A7 III (2360k vs 2359k dots). The following table reports on some other key feature differences and similarities of the Sony A7 III, the Olympus E-M10 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. | Sony A7 III | 2359 | n | 3.0 / 922 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
2. | Olympus E-M10 III | 2360 | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.6/s | Y | Y | |
3. | Canon 6D Mark II | optical | Y | 3.0 / 1040 | swivel | Y | 1/4000s | 6.5/s | n | n | |
4. | Nikon Z6 | 3690 | Y | 3.2 / 2100 | tilting | Y | 1/8000s | 12.0/s | n | Y | |
5. | Olympus E-M10 II | 2360 | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.0/s | Y | Y | |
6. | Olympus E-M10 IV | 2360 | n | 3.0 / 1040 | tilting | Y | 1/4000s | 15.0/s | Y | Y | |
7. | Olympus E-PL8 | optional | n | 3.0 / 1037 | tilting | Y | 1/4000s | 8.0/s | n | Y | |
8. | Olympus E-PL9 | none | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.6/s | Y | Y | |
9. | Olympus E-PL10 | none | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.6/s | Y | Y | |
10. | Sony A7 II | 2400 | n | 3.0 / 1230 | tilting | n | 1/8000s | 5.0/s | n | Y | |
11. | Sony A7 IV | 3686 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
12. | Sony A7C | 2360 | n | 3.0 / 922 | swivel | Y | 1/4000s | 10.0/s | n | Y | |
13. | Sony A7R III | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
14. | Sony A7R IIIA | 3686 | n | 3.0 / 2340 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
15. | Sony A7R IV | 5760 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 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. |
One difference between the cameras concerns the presence of an on-board flash. The E-M10 III has one, while the A7 III does not. While the built-in flash of the E-M10 III is not very powerful, it can at times be useful as a fill-in light.
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 Sony A7 III and the Olympus E-M10 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 A7 III writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the E-M10 III uses SDXC cards. The A7 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-M10 III only has one slot. Both cameras support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 MB/s (the second slot of the A7 III supports only UHS-I, though).
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 Sony Alpha A7 III and Olympus OM-D E-M10 Mark 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. | Sony A7 III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
2. | Olympus E-M10 III | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
3. | Canon 6D Mark II | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
4. | Nikon Z6 | Y | stereo / mono | Y | Y | micro | 3.1 | Y | - | Y | |
5. | Olympus E-M10 II | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
6. | Olympus E-M10 IV | Y | stereo / mono | - | - | micro | 2.0 | Y | - | Y | |
7. | Olympus E-PL8 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
8. | Olympus E-PL9 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | Y | |
9. | Olympus E-PL10 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | Y | |
10. | Sony A7 II | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - | |
11. | Sony A7 IV | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
12. | Sony A7C | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y | |
13. | Sony A7R III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
14. | Sony A7R IIIA | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y | |
15. | Sony A7R IV | Y | stereo / mono | Y | Y | micro | 3.1 | Y | 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 |
It is notable that the A7 III has a microphone port, which is missing on the E-M10 III. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.
The A7 III is a recent model that features in the current product line-up of Sony. In contrast, the E-M10 III has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-M10 III was succeeded by the Olympus E-M10 IV. Further information on the features and operation of the A7 III and E-M10 III can be found, respectively, in the Sony A7 III Manual (free pdf) or the online Olympus E-M10 III Manual.
Review summary
So how do things add up? Which of the two cameras – the Sony A7 III or the Olympus E-M10 III – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Sony Alpha A7 III:
- More detail: Offers more megapixels (24 vs 15.9MP) with a 25% 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 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 (0.78x vs 0.62x).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 8.6 flaps/sec) to capture the decisive moment.
- Longer lasting: Can take more shots (610 versus 330) on a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More modern: Is somewhat more recent (announced 5 months after the E-M10 III).
Reasons to prefer the Olympus OM-D E-M10 Mark III:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 922k dots).
- More compact: Is smaller (122x84mm vs 127x96mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 240g or 37 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (68 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in August 2017).
If the count of individual advantages (bullet points above) is taken as a guide, the A7 III is the clear winner of the match-up (20 : 7 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 Sony A7 III and the Olympus E-M10 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 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 A7 III or the E-M10 III. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
Expert reviews
This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.
Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price (USD) |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Sony A7 III | .. | + + | 4.5/5 | 89/100 | 5/5 | 5/5 | Feb 2018 | 1,999 | amazon.com | |
2. | Olympus E-M10 III | .. | + | 5/5 | 80/100 | 4.5/5 | 4.5/5 | Aug 2017 | 649 | ebay.com | |
3. | Canon 6D Mark II | 4/5 | + | 4/5 | 80/100 | 4.5/5 | 4/5 | Jun 2017 | 1,999 | amazon.com | |
4. | Nikon Z6 | 5/5 | .. | 5/5 | 89/100 | 4.5/5 | 5/5 | Aug 2018 | 1,999 | ebay.com | |
5. | Olympus E-M10 II | 4.5/5 | + + | .. | 80/100 | 5/5 | 5/5 | Aug 2015 | 649 | ebay.com | |
6. | Olympus E-M10 IV | 4.5/5 | .. | 5/5 | 81/100 | 4.5/5 | 4.5/5 | Aug 2020 | 699 | amazon.com | |
7. | Olympus E-PL8 | .. | .. | .. | .. | 4.5/5 | 4/5 | Sep 2016 | 549 | ebay.com | |
8. | Olympus E-PL9 | .. | + | .. | .. | 4.5/5 | 4/5 | Feb 2018 | 599 | ebay.com | |
9. | Olympus E-PL10 | .. | .. | 4/5 | 77/100 | .. | 4/5 | Oct 2019 | 599 | ebay.com | |
10. | Sony A7 II | 5/5 | + | 4/5 | 82/100 | 4.5/5 | 5/5 | Nov 2014 | 1,999 | ebay.com | |
11. | Sony A7 IV | 5/5 | + + | 4.5/5 | 89/100 | 4.5/5 | 4.5/5 | Oct 2021 | 2,499 | amazon.com | |
12. | Sony A7C | 3.5/5 | .. | 3.5/5 | 86/100 | 4/5 | 4/5 | Sep 2020 | 1,799 | amazon.com | |
13. | Sony A7R III | .. | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Oct 2017 | 3,199 | ebay.com | |
14. | Sony A7R IIIA | .. | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Apr 2021 | 3,199 | amazon.com | |
15. | Sony A7R IV | 5/5 | + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Jul 2019 | 3,499 | ebay.com | |
16. | Sony A9 | 5/5 | + + | 4.8/5 | 89/100 | 5/5 | 5/5 | Apr 2017 | 4,499 | ebay.com | |
17. | Sony A9 II | .. | .. | 5/5 | 90/100 | 5/5 | 5/5 | Oct 2019 | 4,499 | amazon.com | |
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. |
Care should be taken when interpreting the review scores above, 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.
Other camera comparisons
Did this review help to inform your camera decision process? If you would like to see a different side-by-side camera review, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
- Canon 1000D vs Sony A7 III
- Canon 1200D vs Sony A7 III
- Canon 250D vs Olympus E-M10 III
- Canon D30 vs Sony A7 III
- Fujifilm X-T4 vs Sony A7 III
- Leica V-LUX 4 vs Olympus E-M10 III
- Nikon Coolpix A vs Sony A7 III
- Nikon D40 vs Olympus E-M10 III
- Nikon D700 vs Sony A7 III
- Nikon Z50 vs Olympus E-M10 III
- Olympus E-M10 III vs Sony H200
- Olympus E-M10 III vs Sony RX100 V
Specifications: Sony A7 III vs Olympus E-M10 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 | Sony A7 III | Olympus E-M10 III |
---|---|---|
Camera Type | Mirrorless system camera | Mirrorless system camera |
Camera Lens | Sony E mount lenses | Micro Four Thirds lenses |
Launch Date | February 2018 | August 2017 |
Launch Price | USD 1,999 | USD 649 |
Sensor Specs | Sony A7 III | Olympus E-M10 III |
Sensor Technology | BSI-CMOS | CMOS |
Sensor Format | Full Frame Sensor | Four Thirds Sensor |
Sensor Size | 35.6 x 23.8 mm | 17.3 x 13.0 mm |
Sensor Area | 847.28 mm2 | 224.9 mm2 |
Sensor Diagonal | 42.8 mm | 21.6 mm |
Crop Factor | 1.0x | 2.0x |
Sensor Resolution | 24 Megapixels | 15.9 Megapixels |
Image Resolution | 6000 x 4000 pixels | 4608 x 3456 pixels |
Pixel Pitch | 5.94 μm | 3.76 μm |
Pixel Density | 2.83 MP/cm2 | 7.08 MP/cm2 |
Moiré control | Anti-Alias filter | no AA filter |
Movie Capability | 4K/30p Video | 4K/30p Video |
ISO Setting | 100 - 51,200 ISO | 200 - 25,600 ISO |
ISO Boost | 50 - 204,800 ISO | 100 - 25,600 ISO |
Image Processor | BIONZ X | TruePic VIII |
DXO Sensor Quality (score) | 96 | .. |
DXO Color Depth (bits) | 25.0 | .. |
DXO Dynamic Range (EV) | 14.7 | .. |
DXO Low Light (ISO) | 3730 | .. |
Screen Specs | Sony A7 III | Olympus E-M10 III |
Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
Viewfinder Field of View | 100% | 100% |
Viewfinder Magnification | 0.78x | 0.62x |
Viewfinder Resolution | 2359k dots | 2360k dots |
LCD Framing | Live View | Live View |
Rear LCD Size | 3.0inch | 3.0inch |
LCD Resolution | 922k dots | 1040k dots |
LCD Attachment | Tilting screen | Tilting screen |
Touch Input | Touchscreen | Touchscreen |
Shooting Specs | Sony A7 III | Olympus E-M10 III |
Focus System | On-Sensor Phase-detect | Contrast-detect AF |
Manual Focusing Aid | Focus Peaking | Focus Peaking |
Max Shutter Speed (mechanical) | 1/8000s | 1/4000s |
Continuous Shooting | 10 shutter flaps/s | 8.6 shutter flaps/s |
Electronic Shutter | YES | up to 1/16000s |
Time-Lapse Photography | Intervalometer built-in | Intervalometer built-in |
Image Stabilization | In-body stabilization | In-body stabilization |
Fill Flash | no On-Board Flash | Built-in Flash |
Storage Medium | MS or SDXC cards | SDXC cards |
Single or Dual Card Slots | Dual card slots | Single card slot |
UHS card support | Single UHS-II | UHS-II |
Connectivity Specs | Sony A7 III | Olympus E-M10 III |
External Flash | Hotshoe | Hotshoe |
USB Connector | USB 3.1 | USB 2.0 |
HDMI Port | micro HDMI | micro HDMI |
Microphone Port | External MIC port | no MIC socket |
Headphone Socket | Headphone port | no Headphone port |
Wifi Support | Wifi built-in | Wifi built-in |
Near-Field Communication | NFC built-in | no NFC |
Bluetooth Support | Bluetooth built-in | no Bluetooth |
Body Specs | Sony A7 III | Olympus E-M10 III |
Environmental Sealing | Weathersealed body | not weather sealed |
Battery Type | Sony NP-FZ100 | Olympus BLS-50 |
Battery Life (CIPA) | 610 shots per charge | 330 shots per charge |
In-Camera Charging | USB charging | no USB charging |
Body Dimensions |
127 x 96 x 74 mm (5.0 x 3.8 x 2.9 in) |
122 x 84 x 50 mm (4.8 x 3.3 x 2.0 in) |
Camera Weight | 650 g (22.9 oz) | 410 g (14.5 oz) |
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