Olympus E-M10 IV vs Sony A7R IV
The Olympus OM-D E-M10 Mark IV and the Sony Alpha A7R IV are two digital cameras that were revealed to the public, respectively, in August 2020 and July 2019. Both the E-M10 IV and the A7R IV are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M10 IV) and a full frame (A7R IV) sensor. The Olympus has a resolution of 20.2 megapixels, whereas the Sony provides 60.2 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 Olympus OM-D E-M10 Mark IV and the Sony Alpha A7R IV? 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 Olympus E-M10 IV and the Sony A7R IV. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
The E-M10 IV can be obtained in two different colors (black, silver), while the A7R IV 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 Sony A7R IV is notably larger (21 percent) than the Olympus E-M10 IV. Moreover, the A7R IV is substantially heavier (74 percent) than the E-M10 IV. It is noteworthy in this context that the A7R IV is splash and dust-proof, while the E-M10 IV 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 IV) and the Sony FE Lens Catalog (A7R IV). 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 IV gets 360 shots out of its Olympus BLS-50 battery, while the A7R IV can take 670 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 following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-M10 IV | 122 mm | 84 mm | 49 mm | 383 g | 360 | n | Aug 2020 | US$ 699 | amazon.com | |
2. | Sony A7R IV | 129 mm | 96 mm | 78 mm | 665 g | 670 | Y | Jul 2019 | US$ 3 499 | ebay.com | |
3. | Olympus E-M5 III | 125 mm | 85 mm | 50 mm | 414 g | 310 | Y | Oct 2019 | US$ 1 199 | ebay.com | |
4. | Olympus E-M10 | 119 mm | 82 mm | 46 mm | 396 g | 320 | n | Jan 2014 | US$ 699 | ebay.com | |
5. | Olympus E-M10 II | 120 mm | 83 mm | 47 mm | 390 g | 320 | n | Aug 2015 | US$ 649 | ebay.com | |
6. | Olympus E-M10 III | 122 mm | 84 mm | 50 mm | 410 g | 330 | n | Aug 2017 | US$ 649 | ebay.com | |
7. | Olympus E-P7 | 118 mm | 69 mm | 38 mm | 337 g | 360 | n | Jun 2021 | US$ 799 | amazon.com | |
8. | Olympus E-PL7 | 115 mm | 67 mm | 38 mm | 357 g | 350 | n | Aug 2014 | US$ 599 | ebay.com | |
9. | Olympus E-PL8 | 115 mm | 67 mm | 38 mm | 357 g | 350 | n | Sep 2016 | US$ 549 | ebay.com | |
10. | Olympus E-PL9 | 117 mm | 68 mm | 39 mm | 380 g | 350 | n | Feb 2018 | US$ 599 | ebay.com | |
11. | Olympus E-PL10 | 117 mm | 68 mm | 39 mm | 380 g | 350 | n | Oct 2019 | US$ 599 | ebay.com | |
12. | Olympus PEN-F | 125 mm | 72 mm | 37 mm | 427 g | 330 | n | Jan 2016 | US$ 1 199 | ebay.com | |
13. | Sony A7 III | 127 mm | 96 mm | 74 mm | 650 g | 610 | Y | Feb 2018 | US$ 1 999 | amazon.com | |
14. | Sony A7R III | 127 mm | 96 mm | 74 mm | 650 g | 650 | Y | Oct 2017 | US$ 3 199 | ebay.com | |
15. | Sony A7R IVA | 129 mm | 96 mm | 78 mm | 665 g | 670 | Y | Apr 2021 | US$ 3 499 | amazon.com | |
16. | Sony A7S III | 127 mm | 97 mm | 81 mm | 699 g | 600 | Y | Jul 2020 | US$ 3 499 | amazon.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. | |||||||||||
The price is, of course, an important factor in any camera decision. 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 E-M10 IV was launched at a markedly lower price (by 80 percent) than the A7R IV, 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 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. 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 more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Olympus E-M10 IV features a Four Thirds sensor and the Sony A7R IV a full frame sensor. The sensor area in the A7R IV is 278 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 IV has a native 4:3 aspect ratio, while the one in the A7R IV offers a 3:2 aspect.
With 60.2MP, the A7R IV offers a higher resolution than the E-M10 IV (20.2MP), but the A7R IV nevertheless has larger individual pixels (pixel pitch of 3.76μm versus 3.34μm for the E-M10 IV) due to its larger sensor. However, the E-M10 IV is a somewhat more recent model (by 1 year) than the A7R IV, and its sensor might have benefitted from technological advances during this time that 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 A7R IV implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R IV for good quality output (200 dots per inch) amounts to 47.5 x 31.7 inches or 120.7 x 80.5 cm, for very good quality (250 dpi) 38 x 25.3 inches or 96.6 x 64.4 cm, and for excellent quality (300 dpi) 31.7 x 21.1 inches or 80.5 x 53.6 cm. The corresponding values for the Olympus E-M10 IV 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.
The A7R IV has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Unlike the E-M10 IV, the A7R IV has the capacity to capture high quality composite images (241MP) 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 Olympus OM-D E-M10 Mark IV 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 A7R IV are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 50-102400.
In terms of underlying technology, the E-M10 IV is build around a CMOS sensor, while the A7R IV 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.
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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
---|---|---|---|---|---|---|---|---|---|---|---|
1. | Olympus E-M10 IV | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.3 | 13.2 | 1402 | 76 | |
2. | Sony A7R IV | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 26.0 | 14.8 | 3344 | 99 | |
3. | Olympus E-M5 III | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.3 | 13.1 | 1324 | 76 | |
4. | Olympus E-M10 | Four Thirds | 15.9 | 4608 | 3456 | 1080/30p | 22.8 | 12.3 | 884 | 72 | |
5. | Olympus E-M10 II | Four Thirds | 15.9 | 4608 | 3456 | 1080/60p | 23.1 | 12.5 | 842 | 73 | |
6. | Olympus E-M10 III | Four Thirds | 15.9 | 4608 | 3456 | 4K/30p | 23.1 | 12.8 | 1120 | 74 | |
7. | Olympus E-P7 | Four Thirds | 20.2 | 5184 | 3888 | 4K/30p | 23.4 | 13.3 | 1494 | 77 | |
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 E-PL10 | Four Thirds | 15.9 | 4608 | 3456 | 4K/30p | 23.3 | 13.1 | 1324 | 76 | |
12. | Olympus PEN-F | Four Thirds | 20.2 | 5184 | 3888 | 1080/60p | 23.1 | 12.4 | 894 | 74 | |
13. | Sony A7 III | Full Frame | 24.0 | 6000 | 4000 | 4K/30p | 25.0 | 14.7 | 3730 | 96 | |
14. | Sony A7R III | Full Frame | 42.2 | 7952 | 5304 | 4K/30p | 26.0 | 14.7 | 3523 | 100 | |
15. | Sony A7R IVA | Full Frame | 60.2 | 9504 | 6336 | 4K/30p | 26.0 | 14.8 | 3344 | 99 | |
16. | Sony A7S III | Full Frame | 12.0 | 4240 | 2832 | 4K/120p | 23.7 | 13.9 | 2520 | 86 | |
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. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (4K/30p).
Feature comparison
Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A7R IV offers a substantially higher resolution than the one in the E-M10 IV (5760k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Olympus E-M10 IV, the Sony A7R IV, 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. | Olympus E-M10 IV | 2360 | n | 3.0 / 1040 | tilting | Y | 1/4000s | 15.0/s | Y | Y | |
2. | Sony A7R IV | 5760 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
3. | Olympus E-M5 III | 2360 | n | 3.0 / 1040 | 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 II | 2360 | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.0/s | Y | Y | |
6. | Olympus E-M10 III | 2360 | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.6/s | Y | Y | |
7. | Olympus E-P7 | none | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.7/s | Y | 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 E-PL10 | none | n | 3.0 / 1040 | tilting | Y | 1/4000s | 8.6/s | Y | Y | |
12. | Olympus PEN-F | 2360 | n | 3.0 / 1037 | swivel | Y | 1/8000s | 10.0/s | n | Y | |
13. | Sony A7 III | 2359 | n | 3.0 / 922 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
14. | Sony A7R III | 3686 | n | 3.0 / 1440 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
15. | Sony A7R IVA | 5760 | n | 3.0 / 2340 | tilting | Y | 1/8000s | 10.0/s | n | Y | |
16. | Sony A7S III | 9440 | n | 3.0 / 1440 | swivel | Y | 1/8000s | 10.0/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 IV has one, while the A7R IV does not. While the built-in flash of the E-M10 IV is not very powerful, it can at times be useful as a fill-in light.
The E-M10 IV has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the A7R IV 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 IV and the Sony A7R IV 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 E-M10 IV and the A7R IV write their files to SDXC cards. The A7R IV features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-M10 IV only has one slot. Moreover, both cameras support UHS-II cards (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 Olympus OM-D E-M10 Mark IV and Sony Alpha A7R IV 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 IV | Y | stereo / mono | - | - | micro | 2.0 | Y | - | Y | |
2. | Sony A7R IV | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
3. | Olympus E-M5 III | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | Y | |
4. | Olympus E-M10 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
5. | Olympus E-M10 II | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
6. | Olympus E-M10 III | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
7. | Olympus E-P7 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | Y | |
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 E-PL10 | Y | stereo / mono | - | - | micro | 2.0 | Y | - | Y | |
12. | Olympus PEN-F | Y | stereo / mono | - | - | micro | 2.0 | Y | - | - | |
13. | Sony A7 III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
14. | Sony A7R III | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y | |
15. | Sony A7R IVA | Y | stereo / mono | Y | Y | micro | 3.2 | Y | Y | Y | |
16. | Sony A7S III | Y | stereo / mono | Y | Y | full | 3.2 | Y | - | Y | |
17. | Sony A9 II | Y | stereo / mono | Y | Y | micro | 3.1 | Y | Y | Y |
It is notable that the A7R IV 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 IV lacks such a headphone port.
Studio photographers will appreciate that the Sony A7R IV (unlike the E-M10 IV) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The E-M10 IV is a recent model that features in the current product line-up of Olympus. In contrast, the A7R IV has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the A7R IV was succeeded by the Sony A7R V. Further information on the features and operation of the E-M10 IV and A7R IV can be found, respectively, in the Olympus E-M10 IV Manual (free pdf) or the online Sony A7R IV Manual.
Review summary
So what conclusions can be drawn? Which of the two cameras – the Olympus E-M10 IV or the Sony A7R IV – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Olympus OM-D E-M10 Mark IV:
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (15 vs 10 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (122x84mm vs 129x96mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 282g or 42 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 (80 percent cheaper at launch).
- More modern: Is somewhat more recent (announced 1 year after the A7R IV).
Arguments in favor of the Sony Alpha A7R IV:
- More detail: Has more megapixels (60.2 vs 20.2MP), which boosts linear resolution by 76%.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- 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.
- More detailed viewfinder: Has higher resolution electronic viewfinder (5760k vs 2360k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.62x).
- More detailed LCD: Has a higher resolution rear screen (1440k vs 1040k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Longer lasting: Gets more shots (670 versus 360) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- 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.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More heavily discounted: Has been on the market for longer (launched in July 2019).
If the count of individual advantages (bullet points above) is taken as a guide, the A7R IV is the clear winner of the contest (20 : 7 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 IV and the Sony A7R IV 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 IV or the A7R IV. 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 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 IV | 4.5/5 | .. | 5/5 | 81/100 | 4.5/5 | 4.5/5 | Aug 2020 | US$ 699 | amazon.com | |
2. | Sony A7R IV | 5/5 | + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Jul 2019 | US$ 3 499 | ebay.com | |
3. | Olympus E-M5 III | 5/5 | + | 5/5 | 82/100 | 4.5/5 | 4.5/5 | Oct 2019 | US$ 1 199 | ebay.com | |
4. | Olympus E-M10 | 4/5 | .. | .. | 80/100 | 5/5 | 5/5 | Jan 2014 | US$ 699 | ebay.com | |
5. | Olympus E-M10 II | 4.5/5 | + + | .. | 80/100 | 5/5 | 5/5 | Aug 2015 | US$ 649 | ebay.com | |
6. | Olympus E-M10 III | .. | + | 5/5 | 80/100 | 4.5/5 | 4.5/5 | Aug 2017 | US$ 649 | ebay.com | |
7. | Olympus E-P7 | 4/5 | .. | 4.5/5 | .. | .. | 4.5/5 | Jun 2021 | US$ 799 | amazon.com | |
8. | Olympus E-PL7 | 4/5 | + | .. | .. | 5/5 | 4/5 | Aug 2014 | US$ 599 | ebay.com | |
9. | Olympus E-PL8 | .. | .. | .. | .. | 4.5/5 | 4/5 | Sep 2016 | US$ 549 | ebay.com | |
10. | Olympus E-PL9 | .. | + | .. | .. | 4.5/5 | 4/5 | Feb 2018 | US$ 599 | ebay.com | |
11. | Olympus E-PL10 | .. | .. | 4/5 | 77/100 | .. | 4/5 | Oct 2019 | US$ 599 | ebay.com | |
12. | Olympus PEN-F | .. | .. | 4/5 | 82/100 | 4.5/5 | 5/5 | Jan 2016 | US$ 1 199 | ebay.com | |
13. | Sony A7 III | .. | + + | 4.5/5 | 89/100 | 5/5 | 5/5 | Feb 2018 | US$ 1 999 | amazon.com | |
14. | Sony A7R III | .. | + + | 4/5 | 90/100 | 4.5/5 | 5/5 | Oct 2017 | US$ 3 199 | ebay.com | |
15. | Sony A7R IVA | 5/5 | + | 4.5/5 | 91/100 | 4.5/5 | 5/5 | Apr 2021 | US$ 3 499 | amazon.com | |
16. | Sony A7S III | 4.5/5 | + + | 5/5 | 91/100 | 4.5/5 | 5/5 | Jul 2020 | US$ 3 499 | amazon.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 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.
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
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- Fujifilm X-A1 vs Sony A7R IV
- Nikon D600 vs Sony A7R IV
- Olympus E-330 vs Sony A7R IV
- Olympus E-M10 IV vs Olympus E-P5
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Specifications: Olympus E-M10 IV vs Sony A7R IV
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 IV | Sony A7R IV |
---|---|---|
Camera Type | Mirrorless system camera | Mirrorless system camera |
Camera Lens | Micro Four Thirds lenses | Sony E mount lenses |
Launch Date | August 2020 | July 2019 |
Launch Price | USD 699 | USD 3,499 |
Sensor Specs | Olympus E-M10 IV | Sony A7R IV |
Sensor Technology | CMOS | BSI-CMOS |
Sensor Format | Four Thirds Sensor | Full Frame Sensor |
Sensor Size | 17.3 x 13.0 mm | 35.7 x 23.8 mm |
Sensor Area | 224.9 mm2 | 849.66 mm2 |
Sensor Diagonal | 21.6 mm | 42.9 mm |
Crop Factor | 2.0x | 1.0x |
Sensor Resolution | 20.2 Megapixels | 60.2 Megapixels |
Image Resolution | 5184 x 3888 pixels | 9504 x 6336 pixels |
Pixel Pitch | 3.34 μm | 3.76 μm |
Pixel Density | 8.96 MP/cm2 | 7.09 MP/cm2 |
Moiré control | no AA filter | no AA filter |
Movie Capability | 4K/30p Video | 4K/30p Video |
ISO Setting | 200 - 25,600 ISO | 100 - 32,000 ISO |
ISO Boost | 100 - 25,600 ISO | 50 - 102,400 ISO |
Image Processor | TruePic VIII | BIONZ X |
DXO Sensor Quality (score) | .. | 99 |
DXO Color Depth (bits) | .. | 26.0 |
DXO Dynamic Range (EV) | .. | 14.8 |
DXO Low Light (ISO) | .. | 3344 |
Screen Specs | Olympus E-M10 IV | Sony A7R IV |
Viewfinder Type | Electronic viewfinder | Electronic viewfinder |
Viewfinder Field of View | 100% | 100% |
Viewfinder Magnification | 0.62x | 0.78x |
Viewfinder Resolution | 2360k dots | 5760k dots |
LCD Framing | Live View | Live View |
Rear LCD Size | 3.0inch | 3.0inch |
LCD Resolution | 1040k dots | 1440k dots |
LCD Attachment | Tilting screen | Tilting screen |
Touch Input | Touchscreen | Touchscreen |
Shooting Specs | Olympus E-M10 IV | Sony A7R IV |
Focus System | Contrast-detect AF | On-Sensor Phase-detect |
Manual Focusing Aid | Focus Peaking | Focus Peaking |
Max Shutter Speed (mechanical) | 1/4000s | 1/8000s |
Continuous Shooting | 15 shutter flaps/s | 10 shutter flaps/s |
Electronic Shutter | up to 1/16000s | YES |
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 | SDXC cards |
Single or Dual Card Slots | Single card slot | Dual card slots |
UHS card support | UHS-II | Dual UHS-II |
Connectivity Specs | Olympus E-M10 IV | Sony A7R IV |
External Flash | Hotshoe | Hotshoe |
Studio Flash | no PC Sync | PC Sync socket |
USB Connector | USB 2.0 | USB 3.1 |
HDMI Port | micro HDMI | micro HDMI |
Microphone Port | no MIC socket | External MIC port |
Headphone Socket | no Headphone port | Headphone port |
Wifi Support | Wifi built-in | Wifi built-in |
Near-Field Communication | no NFC | NFC built-in |
Bluetooth Support | Bluetooth built-in | Bluetooth built-in |
Body Specs | Olympus E-M10 IV | Sony A7R IV |
Environmental Sealing | not weather sealed | Weathersealed body |
Battery Type | Olympus BLS-50 | Sony NP-FZ100 |
Battery Life (CIPA) | 360 shots per charge | 670 shots per charge |
In-Camera Charging | USB charging | USB charging |
Body Dimensions |
122 x 84 x 49 mm (4.8 x 3.3 x 1.9 in) |
129 x 96 x 78 mm (5.1 x 3.8 x 3.1 in) |
Camera Weight | 383 g (13.5 oz) | 665 g (23.5 oz) |
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