Olympus E-M5 II vs Sony A7R III
The Olympus OM-D E-M5 Mark II and the Sony Alpha A7R III are two enthusiast cameras that were officially introduced, respectively, in February 2015 and October 2017. Both the E-M5 II and the A7R III are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M5 II) and a full frame (A7R III) sensor. The Olympus has a resolution of 15.9 megapixels, whereas the Sony provides 42.2 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-M5 Mark II and the Sony Alpha A7R 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.
The side-by-side display below illustrates the physical size and weight of the Olympus E-M5 II and the Sony A7R III. 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 E-M5 II can be obtained in two different colors (black, silver), while the A7R 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 Sony A7R III is notably larger (16 percent) than the Olympus E-M5 II. Moreover, the A7R III is substantially heavier (39 percent) than the E-M5 II. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Micro Four Thirds Lens Catalog (E-M5 II) and the Sony FE Lens Catalog (A7R 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 E-M5 II gets 310 shots out of its BLN-1 battery, while the A7R III can take 650 images on a single charge of its NP-FZ100 power pack. The power pack in the A7R III can be charged via the USB port, 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. 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.
|1.||Olympus E-M5 II||124 mm||85 mm||45 mm||469 g||310||Y||Feb 2015||1,099||ebay.com|
|2.||Sony A7R III||127 mm||96 mm||74 mm||650 g||650||Y||Oct 2017||3,199||ebay.com|
|3.||Nikon Z7||134 mm||101 mm||67 mm||675 g||330||Y||Aug 2018||3,399||ebay.com|
|4.||Olympus E-M5 III||125 mm||85 mm||50 mm||414 g||310||Y||Oct 2019||1,199||amazon.com|
|5.||Olympus PEN-F||125 mm||72 mm||37 mm||427 g||330||n||Jan 2016||1,199||ebay.com|
|6.||Olympus E-M10 II||120 mm||83 mm||47 mm||390 g||320||n||Aug 2015||649||ebay.com|
|7.||Olympus E-M10||119 mm||82 mm||46 mm||396 g||320||n||Jan 2014||699||ebay.com|
|8.||Olympus E-M1||130 mm||94 mm||63 mm||497 g||350||Y||Sep 2013||1,399||ebay.com|
|9.||Olympus E-P5||122 mm||69 mm||37 mm||420 g||330||n||May 2013||999||ebay.com|
|10.||Olympus E-M5||122 mm||89 mm||43 mm||425 g||360||Y||Feb 2012||1,299||ebay.com|
|11.||Panasonic G85||128 mm||89 mm||74 mm||505 g||330||Y||Sep 2016||899||ebay.com|
|12.||Panasonic GX85||122 mm||71 mm||44 mm||426 g||290||n||Apr 2016||799||amazon.com|
|13.||Panasonic GX8||133 mm||78 mm||63 mm||487 g||330||Y||Jul 2015||1,199||ebay.com|
|14.||Sony A7R V||131 mm||97 mm||82 mm||723 g||530||Y||Oct 2022||3,899||amazon.com|
|15.||Sony A1||129 mm||97 mm||81 mm||737 g||530||Y||Jan 2021||6,499||amazon.com|
|16.||Sony A7S III||127 mm||97 mm||81 mm||699 g||600||Y||Jul 2020||3,499||amazon.com|
|17.||Sony A7R II||127 mm||96 mm||60 mm||625 g||290||Y||Jun 2015||3,199||ebay.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-M5 II was launched at a markedly lower price (by 66 percent) than the A7R III, 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.
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 Olympus E-M5 II features a Four Thirds sensor and the Sony A7R III a full frame sensor. The sensor area in the A7R III is 283 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-M5 II has a native 4:3 aspect ratio, while the one in the A7R III offers a 3:2 aspect.
With 42.2MP, the A7R III offers a higher resolution than the E-M5 II (15.9MP), but the A7R III nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 3.76μm for the E-M5 II) due to its larger sensor. Moreover, the A7R III is a much more recent model (by 2 years and 8 months) than the E-M5 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 the A7R III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A7R III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R III for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inches or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inches or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inches or 67.3 x 44.9 cm. The corresponding values for the Olympus E-M5 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 A7R III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
Both cameras have the capacity to capture high quality composite images by combining multiple shots after shifting the 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-M5 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 A7R III are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 50-102400.
In terms of underlying technology, the E-M5 II is build around a CMOS sensor, while the A7R III 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 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. Of the two cameras under consideration, the A7R III offers substantially better image quality than the E-M5 II (overall score 27 points higher). The advantage is based on 3 bits higher color depth, 2.2 EV in additional dynamic range, and 2.1 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|1.||Olympus E-M5 II||Four Thirds||15.9||4608||3456||1080/60p||23.0||12.5||842||73|
|2.||Sony A7R III||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100|
|3.||Nikon Z7||Full Frame||45.4||8256||5504||4K/30p||26.3||14.6||2668||99|
|4.||Olympus E-M5 III||Four Thirds||20.2||5184||3888||4K/30p||23.3||13.1||1324||76|
|5.||Olympus PEN-F||Four Thirds||20.2||5184||3888||1080/60p||23.1||12.4||894||74|
|6.||Olympus E-M10 II||Four Thirds||15.9||4608||3456||1080/60p||23.1||12.5||842||73|
|7.||Olympus E-M10||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||884||72|
|8.||Olympus E-M1||Four Thirds||15.9||4608||3456||1080/30p||23.0||12.7||757||73|
|9.||Olympus E-P5||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.4||895||72|
|10.||Olympus E-M5||Four Thirds||15.9||4608||3456||1080/60i||22.8||12.3||826||71|
|11.||Panasonic G85||Four Thirds||15.8||4592||3448||4K/30p||22.8||12.5||656||71|
|12.||Panasonic GX85||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||71|
|13.||Panasonic GX8||Four Thirds||20.2||5184||3888||4K/30p||23.5||12.6||806||75|
|14.||Sony A7R V||Full Frame||60.2||9504||6336||8k/24p||26.5||14.8||3187||100|
|15.||Sony A1||Full Frame||49.8||8640||5760||8k/30p||25.9||14.5||3163||98|
|16.||Sony A7S III||Full Frame||12.0||4240||2832||4K/120p||23.7||13.9||2520||86|
|17.||Sony A7R II||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98|
|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 A7R III provides a better video resolution than the E-M5 II. It can shoot movie footage at 4K/30p, while the Olympus is limited to 1080/60p.
Apart from body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A7R III offers a substantially higher resolution than the one in the E-M5 II (3686k vs 2360k dots). The table below summarizes some of the other core capabilities of the Olympus E-M5 II and Sony A7R III in connection with corresponding information for a sample of similar cameras.
|1.||Olympus E-M5 II||2360||n||3.0 / 1037||swivel||Y||1/8000s||10.0/s||n||Y|
|2.||Sony A7R III||3686||n||3.0 / 1440||tilting||Y||1/8000s||10.0/s||n||Y|
|3.||Nikon Z7||3690||Y||3.2 / 2100||tilting||Y||1/8000s||9.0/s||n||Y|
|4.||Olympus E-M5 III||2360||n||3.0 / 1040||swivel||Y||1/8000s||10.0/s||n||Y|
|5.||Olympus PEN-F||2360||n||3.0 / 1037||swivel||Y||1/8000s||10.0/s||n||Y|
|6.||Olympus E-M10 II||2360||n||3.0 / 1040||tilting||Y||1/4000s||8.0/s||Y||Y|
|7.||Olympus E-M10||1440||n||3.0 / 1037||tilting||Y||1/4000s||8.0/s||Y||Y|
|8.||Olympus E-M1||2360||n||3.0 / 1037||tilting||Y||1/8000s||10.0/s||n||Y|
|9.||Olympus E-P5||optional||n||3.0 / 1037||tilting||Y||1/8000s||9.0/s||Y||Y|
|10.||Olympus E-M5||1440||n||3.0 / 610||tilting||Y||1/4000s||9.0/s||n||Y|
|11.||Panasonic G85||2360||n||3.0 / 1040||swivel||Y||1/4000s||9.0/s||Y||Y|
|12.||Panasonic GX85||2765||n||3.0 / 1040||tilting||Y||1/4000s||8.0/s||Y||Y|
|13.||Panasonic GX8||2360||n||3.0 / 1040||swivel||Y||1/8000s||10.0/s||n||Y|
|14.||Sony A7R V||9440||n||3.2 / 2100||full-flex||Y||1/8000s||10.0/s||n||Y|
|15.||Sony A1||9437||n||3.0 / 1440||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 A7R II||2400||n||3.0 / 1229||tilting||n||1/8000s||5.0/s||n||Y|
|Notes: *) 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 Olympus E-M5 II and the Sony A7R 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 E-M5 II writes its imaging data to SDXC cards, while the A7R III uses SDXC or Memory Stick PRO Duo cards. The A7R III features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-M5 II only has one slot. Both the E-M5 II and the A7R III support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 MB/s (the second slot of the A7R III only offers slower UHS-I transfer rates, though).
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-M5 Mark II and Sony Alpha A7R III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Olympus E-M5 II||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|2.||Sony A7R III||Y||stereo / mono||Y||Y||micro||3.1||Y||Y||Y|
|3.||Nikon Z7||Y||stereo / mono||Y||Y||micro||3.1||Y||-||Y|
|4.||Olympus E-M5 III||Y||stereo / mono||Y||-||micro||2.0||Y||-||Y|
|5.||Olympus PEN-F||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|6.||Olympus E-M10 II||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|7.||Olympus E-M10||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|8.||Olympus E-M1||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|9.||Olympus E-P5||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|10.||Olympus E-M5||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|11.||Panasonic G85||Y||stereo / mono||Y||-||micro||2.0||Y||-||-|
|12.||Panasonic GX85||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|13.||Panasonic GX8||Y||stereo / mono||Y||-||micro||2.0||Y||Y||-|
|14.||Sony A7R V||Y||stereo / mono||Y||Y||full||3.2||Y||-||Y|
|15.||Sony A1||Y||stereo / mono||Y||Y||full||3.2||Y||-||Y|
|16.||Sony A7S III||Y||stereo / mono||Y||Y||full||3.2||Y||-||Y|
|17.||Sony A7R II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
It is notable that the A7R III has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The E-M5 II lacks such a headphone port.
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the E-M5 II and the A7R III have been discontinued, but can regularly be found used on ebay. The E-M5 II was replaced by the Olympus E-M5 III, while the A7R III was followed by the Sony A7R IV. Further information on the features and operation of the E-M5 II and A7R III can be found, respectively, in the Olympus E-M5 II Manual (free pdf) or the online Sony A7R III Manual.
So what conclusions can be drawn? Is the Olympus E-M5 II better than the Sony A7R III or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Olympus OM-D E-M5 Mark II:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- 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.
- More compact: Is smaller (124x85mm vs 127x96mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 181g or 28 percent) and hence easier to carry around.
- More affordable: Was introduced into a lower priced category (66 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in February 2015).
Reasons to prefer the Sony Alpha A7R III:
- More detail: Has more megapixels (42.2 vs 15.9MP), which boosts linear resolution by 66%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (27 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (3 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (2.2 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (2.1 stops ISO advantage).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More detailed viewfinder: Has higher resolution electronic viewfinder (3686k vs 2360k dots).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.74x).
- More detailed LCD: Has a higher resolution rear screen (1440k vs 1037k dots).
- Longer lasting: Gets more shots (650 versus 310) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- 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: Reflects 2 years and 8 months of technical progress since the E-M5 II launch.
If the number of relative strengths (bullet points above) is taken as a guide, the A7R III is the clear winner of the contest (19 : 7 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-M5 II and the Sony A7R III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.
In any case, while the comparison of 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 E-M5 II or the A7R III 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.
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.
|1.||Olympus E-M5 II||5/5||+ +||4.5/5||81/100||5/5||5/5||Feb 2015||1,099||ebay.com|
|2.||Sony A7R III||..||+ +||4/5||90/100||4.5/5||5/5||Oct 2017||3,199||ebay.com|
|3.||Nikon Z7||5/5||+||4.8/5||89/100||4.5/5||5/5||Aug 2018||3,399||ebay.com|
|4.||Olympus E-M5 III||5/5||+||5/5||82/100||4.5/5||4.5/5||Oct 2019||1,199||amazon.com|
|5.||Olympus PEN-F||..||..||4/5||82/100||4.5/5||5/5||Jan 2016||1,199||ebay.com|
|6.||Olympus E-M10 II||4.5/5||+ +||..||80/100||5/5||5/5||Aug 2015||649||ebay.com|
|7.||Olympus E-M10||4/5||..||..||80/100||5/5||5/5||Jan 2014||699||ebay.com|
|8.||Olympus E-M1||5/5||+ +||..||84/100||4.5/5||4.5/5||Sep 2013||1,399||ebay.com|
|9.||Olympus E-P5||5/5||+ +||..||78/100||4.5/5||5/5||May 2013||999||ebay.com|
|10.||Olympus E-M5||4/5||+ +||..||80/100||4.5/5||5/5||Feb 2012||1,299||ebay.com|
|11.||Panasonic G85||..||+ +||..||84/100||5/5||4.5/5||Sep 2016||899||ebay.com|
|12.||Panasonic GX85||4.5/5||+ +||..||82/100||5/5||5/5||Apr 2016||799||amazon.com|
|13.||Panasonic GX8||5/5||+||..||82/100||4.5/5||4.5/5||Jul 2015||1,199||ebay.com|
|14.||Sony A7R V||5/5||+ +||4.5/5||92/100||..||..||Oct 2022||3,899||amazon.com|
|15.||Sony A1||5/5||o||4.5/5||93/100||4.5/5||5/5||Jan 2021||6,499||amazon.com|
|16.||Sony A7S III||4.5/5||+ +||5/5||91/100||4.5/5||5/5||Jul 2020||3,499||amazon.com|
|17.||Sony A7R II||5/5||+ +||5/5||90/100||5/5||5/5||Jun 2015||3,199||ebay.com|
|Notes: (+ +) 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.
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 5D Mark III vs Olympus E-M5 II
- Fujifilm GFX 100S vs Olympus E-M5 II
- Fujifilm X-T200 vs Sony A7R III
- Leica CL vs Olympus E-M5 II
- Leica V-LUX Typ 114 vs Sony A7R III
- Nikon 1 V2 vs Olympus E-M5 II
- Nikon D3500 vs Olympus E-M5 II
- Nikon D700 vs Sony A7R III
- Nikon D850 vs Sony A7R III
- Olympus E-500 vs Olympus E-M5 II
- Panasonic FZ100 vs Sony A7R III
- Panasonic S5 II vs Sony A7R III
Specifications: Olympus E-M5 II vs Sony A7R 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||Olympus E-M5 II||Sony A7R III|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Micro Four Thirds lenses||Sony E mount lenses|
|Launch Date||February 2015||October 2017|
|Launch Price||USD 1,099||USD 3,199|
|Sensor Specs||Olympus E-M5 II||Sony A7R III|
|Sensor Format||Four Thirds Sensor||Full Frame Sensor|
|Sensor Size||17.3 x 13.0 mm||35.9 x 24.0 mm|
|Sensor Area||224.9 mm2||861.6 mm2|
|Sensor Diagonal||21.6 mm||43.2 mm|
|Sensor Resolution||15.9 Megapixels||42.2 Megapixels|
|Image Resolution||4608 x 3456 pixels||7952 x 5304 pixels|
|Pixel Pitch||3.76 μm||4.52 μm|
|Pixel Density||7.08 MP/cm2||4.90 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||1080/60p 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 VII||BIONZ X|
|DXO Sensor Quality (score)||73||100|
|DXO Color Depth (bits)||23.0||26.0|
|DXO Dynamic Range (EV)||12.5||14.7|
|DXO Low Light (ISO)||842||3523|
|Screen Specs||Olympus E-M5 II||Sony A7R III|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2360k dots||3686k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1037k dots||1440k dots|
|LCD Attachment||Swivel screen||Tilting screen|
|Shooting Specs||Olympus E-M5 II||Sony A7R III|
|Focus System||Contrast-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/8000s|
|Continuous Shooting||10 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||no On-Board Flash||no On-Board Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Single or Dual Card Slots||Single card slot||Dual card slots|
|UHS card support||UHS-II||Single UHS-II|
|Connectivity Specs||Olympus E-M5 II||Sony A7R III|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 2.0||USB 3.1|
|HDMI Port||micro HDMI||micro HDMI|
|Microphone Port||External MIC port||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||no Bluetooth||Bluetooth built-in|
|Body Specs||Olympus E-M5 II||Sony A7R III|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||310 shots per charge||650 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
124 x 85 x 45 mm
(4.9 x 3.3 x 1.8 in)
127 x 96 x 74 mm
(5.0 x 3.8 x 2.9 in)
|Camera Weight||469 g (16.5 oz)||650 g (22.9 oz)|
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