Olympus E-M1 II vs Sony A7R IV
The Olympus OM-D E-M1 Mark II and the Sony Alpha A7R IV are two enthusiast cameras that were officially introduced, respectively, in September 2016 and July 2019. Both the E-M1 II and the A7R IV are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M1 II) 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.
|Olympus E-M1 II||Sony A7R IV|
|Mirrorless system camera||Mirrorless system camera|
|Micro Four Thirds lenses||Sony E mount lenses|
|20.2 MP, Four Thirds Sensor||60.2 MP, Full Frame Sensor|
|4K/30p Video||4K/30p Video|
|ISO 200-25600||ISO 100-32000 (50-102400)|
|Electronic viewfinder (2360k dots)||Electronic viewfinder (5760k dots)|
|3.0" LCD, 1037k dots||3.0" LCD, 1440k dots|
|Swivel touchscreen||Tilting touchscreen|
|18 shutter flaps per second||10 shutter flaps per second|
|In-body stabilization||In-body stabilization|
|Weathersealed body||Weathersealed body|
|440 shots per battery charge||670 shots per battery charge|
|134 x 91 x 67 mm, 574 g||129 x 96 x 78 mm, 665 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M1 Mark II 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.
The physical size and weight of the Olympus E-M1 II and the Sony A7R IV are illustrated in the side-by-side display below. 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 size dimensions are rounded to the nearest millimeter.
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 somewhat larger (2 percent) than the Olympus E-M1 II. Moreover, the A7R IV is markedly heavier (16 percent) than the E-M1 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-M1 II) 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-M1 II gets 440 shots out of its BLH-1 battery, while the A7R IV can take 670 images on a single charge of its NP-FZ100 power pack. The power pack in the A7R IV 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. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.
|Olympus E-M1 II»||134 mm||91 mm||67 mm||574 g||440||Y||Sep 2016||1,999||Olympus E-M1 II|
|Sony A7R IV«||129 mm||96 mm||78 mm||665 g||670||Y||Jul 2019||3,499||Sony A7R IV|
|Olympus PEN-F« »||125 mm||72 mm||37 mm||427 g||330||n||Jan 2016||1,199||Olympus PEN-F|
|Olympus E-M5 II« »||124 mm||85 mm||45 mm||469 g||310||Y||Feb 2015||1,099||Olympus E-M5 II|
|Olympus E-M1« »||130 mm||94 mm||63 mm||497 g||350||Y||Sep 2013||1,399||-||Olympus E-M1|
|Panasonic G9« »||137 mm||97 mm||92 mm||658 g||400||Y||Nov 2017||1,699||Panasonic G9|
|Panasonic GH5« »||139 mm||98 mm||87 mm||725 g||410||Y||Jan 2017||1,999||Panasonic GH5|
|Panasonic G80« »||128 mm||89 mm||74 mm||505 g||330||Y||Sep 2016||899||-||Panasonic G80|
|Panasonic GX8« »||133 mm||78 mm||63 mm||487 g||330||Y||Jul 2015||1,199||-||Panasonic GX8|
|Sony A7 III« »||127 mm||96 mm||74 mm||650 g||610||Y||Feb 2018||1,999||Sony A7 III|
|Sony A7R III« »||127 mm||96 mm||74 mm||650 g||650||Y||Oct 2017||3,199||-||Sony A7R III|
|Sony A9« »||127 mm||96 mm||63 mm||673 g||650||Y||Apr 2017||4,499||Sony A9|
|Sony A7R II« »||127 mm||96 mm||60 mm||625 g||290||Y||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||127 mm||96 mm||60 mm||627 g||370||Y||Sep 2015||2,999||Sony A7S II|
|Sony A7 II« »||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||-||Sony A7 II|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. 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-M1 II was launched at a markedly lower price (by 43 percent) than the A7R IV, 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.
The size of the sensor inside a digital camera is one of the key determinants 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. 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 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-M1 II 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-M1 II 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-M1 II (20.2MP), but the A7R IV nevertheless has larger individual pixels (pixel pitch of 3.76μm versus 3.34μm for the E-M1 II) due to its larger sensor. Moreover, the A7R IV is a much more recent model (by 2 years and 9 months) than the E-M1 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 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 inch or 120.7 x 80.5 cm, for very good quality (250 dpi) 38 x 25.3 inch or 96.6 x 64.4 cm, and for excellent quality (300 dpi) 31.7 x 21.1 inch or 80.5 x 53.6 cm. The corresponding values for the Olympus E-M1 II are 25.9 x 19.4 inch or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inch or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inch or 43.9 x 32.9 cm for excellent quality prints.
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-M1 Mark II has a native sensitivity range from ISO 200 to ISO 25600, which can be extended to ISO 64-25600. 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.
For many cameras, data on sensor performance has been reported by DXO Mark. 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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Olympus E-M1 II»||Four Thirds||20.2||5184||3888||4K/30p||23.7||12.8||1312||80||Olympus E-M1 II|
|Sony A7R IV«||Full Frame||60.2||9504||6336||4K/30p||-||-||-||-||Sony A7R IV|
|Olympus PEN-F« »||Four Thirds||20.2||5184||3888||1080/60p||23.1||12.4||894||74||Olympus PEN-F|
|Olympus E-M5 II« »||Four Thirds||15.9||4608||3456||1080/60p||23.0||12.5||842||73||Olympus E-M5 II|
|Olympus E-M1« »||Four Thirds||15.9||4608||3456||1080/30p||23.0||12.7||757||73||Olympus E-M1|
|Panasonic G9« »||Four Thirds||20.2||5184||3888||4K/60p||-||-||-||-||Panasonic G9|
|Panasonic GH5« »||Four Thirds||20.2||5184||3888||4K/60p||23.9||13.0||807||77||Panasonic GH5|
|Panasonic G80« »||Four Thirds||15.8||4592||3448||4K/30p||22.8||12.5||656||71||Panasonic G80|
|Panasonic GX8« »||Four Thirds||20.2||5184||3888||4K/30p||23.5||12.6||806||75||Panasonic GX8|
|Sony A7 III« »||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96||Sony A7 III|
|Sony A7R III« »||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100||Sony A7R III|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Sony A7R II« »||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98||Sony A7R II|
|Sony A7S II« »||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85||Sony A7S II|
|Sony A7 II« »||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90||Sony A7 II|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (4K/30p).
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 A7R IV offers a substantially higher resolution than the one in the E-M1 II (5760k vs 2360k dots). The adjacent table lists some of the other core features of the Olympus E-M1 II and Sony A7R IV along with similar information for a selection of comparators.
|Olympus E-M1 II»||2360||n||3.0||1037||swivel||Y||1/8000s||18.0||n||Y||Olympus E-M1 II|
|Sony A7R IV«||5760||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A7R IV|
|Olympus PEN-F« »||2360||n||3.0||1037||swivel||Y||1/8000s||10.0||n||Y||Olympus PEN-F|
|Olympus E-M5 II« »||2360||n||3.0||1037||swivel||Y||1/8000s||10.0||n||Y||Olympus E-M5 II|
|Olympus E-M1« »||2360||n||3.0||1037||tilting||Y||1/8000s||10.0||n||Y||Olympus E-M1|
|Panasonic G9« »||3680||Y||3.0||1040||swivel||Y||1/8000s||20.0||n||Y||Panasonic G9|
|Panasonic GH5« »||3680||n||3.2||1620||swivel||Y||1/8000s||12.0||n||Y||Panasonic GH5|
|Panasonic G80« »||2360||n||3.0||1040||swivel||Y||1/4000s||9.0||Y||Y||Panasonic G80|
|Panasonic GX8« »||2360||n||3.0||1040||swivel||Y||1/8000s||10.0||n||Y||Panasonic GX8|
|Sony A7 III« »||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y||Sony A7 III|
|Sony A7R III« »||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A7R III|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||1/8000s||20.0||n||Y||Sony A9|
|Sony A7R II« »||2400||n||3.0||1229||tilting||n||1/8000s||5.0||n||Y||Sony A7R II|
|Sony A7S II« »||2400||n||3.0||1229||tilting||n||1/8000s||5.0||n||Y||Sony A7S II|
|Sony A7 II« »||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||Y||Sony A7 II|
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-M1 II 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-M1 II and the A7R IV write their files to SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. However, while the A7R IV supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s) on both slots, the E-M1 II supports UHS-II only on its first slot and UHS-I (data transfer speed up to 104 MB/s) on the second one.
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-M1 Mark II and Sony Alpha A7R IV and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Olympus E-M1 II»||Y||stereo||mono||Y||Y||micro||3.0||Y||-||-||Olympus E-M1 II|
|Sony A7R IV«||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7R IV|
|Olympus PEN-F« »||Y||stereo||mono||-||-||micro||2.0||Y||-||-||Olympus PEN-F|
|Olympus E-M5 II« »||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Olympus E-M5 II|
|Olympus E-M1« »||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Olympus E-M1|
|Panasonic G9« »||Y||stereo||mono||Y||Y||full||3.0||Y||-||Y||Panasonic G9|
|Panasonic GH5« »||Y||stereo||mono||Y||Y||full||3.1||Y||-||Y||Panasonic GH5|
|Panasonic G80« »||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Panasonic G80|
|Panasonic GX8« »||Y||stereo||mono||Y||-||micro||2.0||Y||Y||-||Panasonic GX8|
|Sony A7 III« »||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7 III|
|Sony A7R III« »||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7R III|
|Sony A9« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Sony A7R II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7R II|
|Sony A7S II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7S II|
|Sony A7 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7 II|
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
Both the E-M1 II and the A7R IV are recent models that are part of the current product line-up. The E-M1 II replaced the earlier Olympus E-M1, while the A7R IV followed on from the Sony A7R III. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Olympus and Sony websites.
So how do things add up? Which of the two cameras – the Olympus E-M1 II or the Sony A7R IV – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Olympus OM-D E-M1 Mark II:
- 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 (18 vs 10 flaps/sec) to capture the decisive moment.
- Less heavy: Is lighter (by 91g or 14 percent) and hence easier to carry around.
- More affordable: Was introduced into a lower priced category (43 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in September 2016).
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%.
- 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.
- 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 0.74x).
- More detailed LCD: Has a higher resolution rear screen (1440k vs 1037k dots).
- Longer lasting: Gets more shots (670 versus 440) out of a single battery charge.
- Easier travel charging: Can be conveniently charged via its USB port.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More modern: Reflects 2 years and 9 months of technical progress since the E-M1 II launch.
If the number of relative strengths (bullet points above) is taken as a guide, the A7R IV is the clear winner of the contest (12 : 6 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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-M1 II 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 incomplete and does no justice, for example, to the way the E-M1 II or the A7R IV 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 where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Olympus E-M1 II»||+ +||85/100||4.5/5||5/5||4.5/5||Sep 2016||1,999||Olympus E-M1 II|
|Sony A7R IV«||+||-||-||-||5/5||Jul 2019||3,499||Sony A7R IV|
|Olympus PEN-F« »||-||82/100||4.5/5||4.5/5||5/5||Jan 2016||1,199||Olympus PEN-F|
|Olympus E-M5 II« »||+ +||81/100||5/5||4.5/5||5/5||Feb 2015||1,099||Olympus E-M5 II|
|Olympus E-M1« »||+ +||84/100||4.5/5||4.5/5||4.5/5||Sep 2013||1,399||-||Olympus E-M1|
|Panasonic G9« »||+ +||85/100||5/5||5/5||5/5||Nov 2017||1,699||Panasonic G9|
|Panasonic GH5« »||+ +||85/100||4.5/5||5/5||5/5||Jan 2017||1,999||Panasonic GH5|
|Panasonic G80« »||+ +||84/100||5/5||4.5/5||4.5/5||Sep 2016||899||-||Panasonic G80|
|Panasonic GX8« »||+||82/100||4.5/5||5/5||4.5/5||Jul 2015||1,199||-||Panasonic GX8|
|Sony A7 III« »||+ +||89/100||5/5||5/5||5/5||Feb 2018||1,999||Sony A7 III|
|Sony A7R III« »||+ +||90/100||4.5/5||5/5||5/5||Oct 2017||3,199||-||Sony A7R III|
|Sony A9« »||+ +||89/100||5/5||5/5||5/5||Apr 2017||4,499||Sony A9|
|Sony A7R II« »||+ +||90/100||5/5||4.5/5||5/5||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||+||-||4.5/5||5/5||5/5||Sep 2015||2,999||Sony A7S II|
|Sony A7 II« »||+||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-||Sony A7 II|
|Notes: (+ +) 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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
Other camera comparisons
Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 77D vs Olympus E-M1 II
- Canon G15 vs Olympus E-M1 II
- Leica M10-P vs Olympus E-M1 II
- Leica M9 vs Olympus E-M1 II
- Nikon 1 V3 vs Olympus E-M1 II
- Nikon A1000 vs Olympus E-M1 II
- Nikon D40X vs Sony A7R IV
- Nikon D50 vs Olympus E-M1 II
- Nikon D70s vs Olympus E-M1 II
- Nikon P1000 vs Sony A7R IV
- Olympus XZ-1 vs Sony A7R IV
- Sony A7R IV vs Sony NEX-5T
Specifications: Olympus E-M1 II 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-M1 II||Sony A7R IV|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Micro Four Thirds lenses||Sony E mount lenses|
|Launch Date||September 2016||July 2019|
|Launch Price||USD 1999||USD 3499|
|Sensor Specs||Olympus E-M1 II||Sony A7R IV|
|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|
|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||200-25600 ISO||100-32000 ISO|
|ISO Boost||64-25600 ISO||50-102400 ISO|
|Image Processor||TruePic VIII||BIONZ X|
|DXO Sensor Quality (score)||80||..|
|DXO Color Depth (bits)||23.7||..|
|DXO Dynamic Range (EV)||12.8||..|
|DXO Low Light (ISO)||1312||..|
|Screen Specs||Olympus E-M1 II||Sony A7R IV|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2360k dots||5760k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||1037k dots||1440k dots|
|LCD Attachment||Swivel screen||Tilting screen|
|Shooting Specs||Olympus E-M1 II||Sony A7R IV|
|Autofocus System||On-Sensor Phase-detect||On-Sensor Phase-detect|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000/s||1/8000/s|
|Continuous Shooting||18 shutter flaps/s||10 shutter flaps/s|
|Electronic Shutter||up to 1/32000s||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||SDXC cards|
|Second Storage Option||Dual card slots||Dual card slots|
|UHS card support||Single UHS-II||Dual UHS-II|
|Connectivity Specs||Olympus E-M1 II||Sony A7R IV|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 3.0||USB 3.1|
|HDMI Port||micro HDMI||micro HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||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-M1 II||Sony A7R IV|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||440 shots per charge||670 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
134 x 91 x 67 mm
(5.3 x 3.6 x 2.6 in)
129 x 96 x 78 mm
(5.1 x 3.8 x 3.1 in)
|Camera Weight||574 g (20.2 oz)||665 g (23.5 oz)|
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