Olympus E-M1 vs Sony A7 II
The Olympus OM-D E-M1 and the Sony Alpha A7 II are two enthusiast cameras that were officially introduced, respectively, in September 2013 and November 2014. Both the E-M1 and the A7 II are mirrorless interchangeable lens cameras that are based on a Four Thirds (E-M1) and a full frame (A7 II) sensor. The Olympus has a resolution of 15.9 megapixels, whereas the Sony provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Olympus E-M1||Sony A7 II|
|Mirrorless system camera||Mirrorless system camera|
|Micro Four Thirds lenses||Sony E mount lenses|
|15.9 MP, Four Thirds Sensor||24 MP, Full Frame Sensor|
|1080/30p Video||1080/60p Video|
|ISO 200-25600||ISO 100-25600 (50-51200)|
|Electronic viewfinder (2360k dots)||Electronic viewfinder (2400k dots)|
|3.0" LCD, 1037k dots||3.0" LCD, 1230k dots|
|Tilting touchscreen||Tilting screen (not touch-sensitive)|
|10 shutter flaps per second||5 shutter flaps per second|
|In-body stabilization||In-body stabilization|
|Weathersealed body||Weathersealed body|
|350 shots per battery charge||350 shots per battery charge|
|130 x 94 x 63 mm, 497 g||127 x 96 x 60 mm, 599 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M1 and the Sony Alpha A7 II? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.
The physical size and weight of the Olympus E-M1 and the Sony A7 II are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.
The E-M1 can be obtained in two different colors (black, silver), while the A7 II 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-M1 and the Sony A7 II are of equal size. However, the A7 II is markedly heavier (21 percent) than the E-M1. 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) and the Sony FE Lens Catalog (A7 II). Mirrorless cameras, such as the two under consideration, have the additional advantage of having a short flange to focal plane distance, which makes it possible to mount many lenses from other systems onto the camera via adapters.
The power pack in the A7 II can be charged via the USB port, which can be very convenient when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|Olympus E-M1»||5.1 in||3.7 in||2.5 in||17.5 oz||350||Y||Sep 2013||1,399||-||Olympus E-M1|
|Sony A7 II«||5.0 in||3.8 in||2.4 in||21.1 oz||350||Y||Nov 2014||1,999||-||Sony A7 II|
|Olympus E-M1 II« »||5.3 in||3.6 in||2.6 in||20.2 oz||440||Y||Sep 2016||1,999||-||Olympus E-M1 II|
|Olympus PEN-F« »||4.9 in||2.8 in||1.5 in||15.1 oz||330||n||Jan 2016||1,199||Olympus PEN-F|
|Olympus E-M5 II« »||4.9 in||3.3 in||1.8 in||16.5 oz||310||Y||Feb 2015||1,099||-||Olympus E-M5 II|
|Olympus E-PL7« »||4.5 in||2.6 in||1.5 in||12.6 oz||350||n||Aug 2014||599||-||Olympus E-PL7|
|Olympus E-P5« »||4.8 in||2.7 in||1.5 in||14.8 oz||330||n||May 2013||999||-||Olympus E-P5|
|Olympus E-M5« »||4.8 in||3.5 in||1.7 in||15.0 oz||360||Y||Feb 2012||1,299||-||Olympus E-M5|
|Olympus E-PL5« »||4.4 in||2.5 in||1.5 in||11.5 oz||360||n||Sep 2012||599||-||Olympus E-PL5|
|Olympus E-PM2« »||4.3 in||2.5 in||1.3 in||9.5 oz||360||n||Sep 2012||499||-||Olympus E-PM2|
|Panasonic GH4« »||5.2 in||3.7 in||3.3 in||19.8 oz||500||Y||Feb 2014||1,499||-||Panasonic GH4|
|Panasonic GH3« »||5.2 in||3.7 in||3.2 in||19.4 oz||540||Y||Sep 2012||1,299||-||Panasonic GH3|
|Sony A7 III« »||5.0 in||3.8 in||2.9 in||22.9 oz||610||Y||Feb 2018||1,999||Sony A7 III|
|Sony A7R II« »||5.0 in||3.8 in||2.4 in||22.0 oz||290||Y||Jun 2015||3,199||-||Sony A7R II|
|Sony A7S II« »||5.0 in||3.8 in||2.4 in||22.1 oz||370||Y||Sep 2015||2,999||Sony A7S II|
|Sony A7« »||5.0 in||3.7 in||1.9 in||16.7 oz||340||Y||Oct 2013||1,699||-||Sony A7|
|Sony A7R« »||5.0 in||3.7 in||1.9 in||16.4 oz||340||Y||Oct 2013||2,299||-||Sony A7R|
|Note: Measurements and pricing do not include easily detachable parts, such as 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-M1 was launched at a markedly lower price (by 30 percent) than the A7 II, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.
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 features a Four Thirds sensor and the Sony A7 II a full frame sensor. The sensor area in the A7 II is 280 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 has a native 4:3 aspect ratio, while the one in the A7 II offers a 3:2 aspect.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
With 24MP, the A7 II offers a higher resolution than the E-M1 (15.9MP), but the A7 II nevertheless has larger individual pixels (pixel pitch of 5.97μm versus 3.76μm for the E-M1) due to its larger sensor. Moreover, the A7 II is a somewhat more recent model (by 1 year and 2 months) than the E-M1, and its sensor might 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 E-M1 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A7 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 II for good quality output (200 dots per inch) amounts to 30 x 20 inch or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inch or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inch or 50.8 x 33.9 cm. The corresponding values for the Olympus E-M1 are 23 x 17.3 inch or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inch or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inch or 39 x 29.3 cm for excellent quality prints.
The Olympus OM-D E-M1 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 A7 II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-51200.
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"). Of the two cameras under consideration, the A7 II offers substantially better image quality than the E-M1 (overall score 17 points higher). The advantage is based on 1.9 bits higher color depth, 0.9 EV in additional dynamic range, and 1.7 stops in additional low light sensitivity. 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»||Four Thirds||15.9||4608||3456||1080/30p||23.0||12.7||757||73||Olympus E-M1|
|Sony A7 II«||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90||Sony A7 II|
|Olympus E-M1 II« »||Four Thirds||20.2||5184||3888||4K/30p||23.7||12.8||1312||80||Olympus E-M1 II|
|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-PL7« »||Four Thirds||15.9||4608||3456||1080/30p||22.7||12.4||873||72||Olympus E-PL7|
|Olympus E-P5« »||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.4||895||72||Olympus E-P5|
|Olympus E-M5« »||Four Thirds||15.9||4608||3456||1080/60i||22.8||12.3||826||71||Olympus E-M5|
|Olympus E-PL5« »||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||889||72||Olympus E-PL5|
|Olympus E-PM2« »||Four Thirds||15.9||4608||3456||1080/30p||22.7||12.2||932||72||Olympus E-PM2|
|Panasonic GH4« »||Four Thirds||15.9||4608||3456||4K/30p||23.2||12.8||791||74||Panasonic GH4|
|Panasonic GH3« »||Four Thirds||15.9||4608||3456||1080/60p||22.7||12.4||812||71||Panasonic GH3|
|Sony A7 III« »||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96||Sony A7 III|
|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« »||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90||Sony A7|
|Sony A7R« »||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95||Sony A7R|
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, but the A7 II provides a faster frame rate than the E-M1. It can shoot movie footage at 1080/60p, while the Olympus is limited to 1080/30p.
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 A7 II offers a slightly higher resolution than the one in the E-M1 (2400k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Olympus E-M1, the Sony A7 II, and comparable cameras.
|Olympus E-M1»||2360||n||3.0||1037||tilting||Y||1/8000s||10.0||n||Y||Olympus E-M1|
|Sony A7 II«||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||Y||Sony A7 II|
|Olympus E-M1 II« »||2360||n||3.0||1037||swivel||Y||1/8000s||18.0||n||Y||Olympus E-M1 II|
|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-PL7« »||-||n||3.0||1037||tilting||Y||1/4000s||8.0||n||Y||Olympus E-PL7|
|Olympus E-P5« »||-||n||3.0||1037||tilting||Y||1/8000s||9.0||Y||Y||Olympus E-P5|
|Olympus E-M5« »||1440||n||3.0||610||tilting||Y||1/4000s||9.0||n||Y||Olympus E-M5|
|Olympus E-PL5« »||-||n||3.0||460||tilting||Y||1/4000s||8.0||n||Y||Olympus E-PL5|
|Olympus E-PM2« »||-||n||3.0||460||fixed||Y||1/4000s||8.0||n||Y||Olympus E-PM2|
|Panasonic GH4« »||2359||n||3.0||1036||swivel||Y||1/8000s||12.0||Y||n||Panasonic GH4|
|Panasonic GH3« »||1746||n||3.0||614||swivel||Y||1/4000s||6.0||Y||n||Panasonic GH3|
|Sony A7 III« »||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y||Sony A7 III|
|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« »||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||n||Sony A7|
|Sony A7R« »||2400||n||3.0||1230||tilting||n||1/8000s||4.0||n||n||Sony A7R|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The E-M1 has a touchscreen, while the A7 II has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.
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, the E-M1 is one of those camera that have an additional 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 has 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-M1 writes its imaging data to SDXC cards, while the A7 II uses SDXC or Memory Stick PRO Duo cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.
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 and Sony Alpha A7 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Olympus E-M1»||Y||stereo||mono||Y||-||micro||2.0||Y||-||-||Olympus E-M1|
|Sony A7 II«||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7 II|
|Olympus E-M1 II« »||Y||stereo||mono||Y||Y||micro||3.0||Y||-||-||Olympus E-M1 II|
|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-PL7« »||Y||stereo||mono||-||-||micro||2.0||Y||-||-||Olympus E-PL7|
|Olympus E-P5« »||Y||stereo||mono||-||-||micro||2.0||Y||-||-||Olympus E-P5|
|Olympus E-M5« »||Y||stereo||mono||-||-||mini||2.0||-||-||-||Olympus E-M5|
|Olympus E-PL5« »||Y||stereo||mono||-||-||mini||2.0||-||-||-||Olympus E-PL5|
|Olympus E-PM2« »||Y||stereo||mono||-||-||mini||2.0||-||-||-||Olympus E-PM2|
|Panasonic GH4« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Panasonic GH4|
|Panasonic GH3« »||Y||stereo||mono||Y||Y||mini||2.0||Y||-||-||Panasonic GH3|
|Sony A7 III« »||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7 III|
|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« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7|
|Sony A7R« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7R|
It is notable that the A7 II has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The E-M1 lacks such a headphone port.
Studio photographers will appreciate that the Olympus E-M1 (unlike the A7 II) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the E-M1 and the A7 II have been discontinued, but can regularly be found used on eBay. The E-M1 was replaced by the Olympus E-M1 II, while the A7 II was followed by the Sony A7 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? Is the Olympus E-M1 better than the Sony A7 II or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Olympus OM-D E-M1:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.74x vs 0.71x).
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Faster burst: Shoots at higher frequency (10 vs 5 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Less heavy: Is lighter (by 102g or 17 percent) and hence easier to carry around.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More affordable: Was introduced into a lower priced category (30 percent cheaper at launch).
- More heavily discounted: Has been on the market for longer (launched in September 2013).
Arguments in favor of the Sony Alpha A7 II:
- More detail: Has more megapixels (24 vs 15.9MP), which boosts linear resolution by 25%.
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better image quality: Scores substantially higher (17 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.9 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (0.9 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.7 stops ISO advantage).
- Better video: Provides higher movie framerates (1080/60p versus 1080/30p).
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More detailed LCD: Has a higher resolution rear screen (1230k vs 1037k dots).
- Easier travel charging: Can be conveniently charged via its USB port.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More modern: Was introduced somewhat (1 year and 2 months) more recently.
If the number of relative strengths (bullet points above) is taken as a guide, the A7 II comes out slightly ahead of the E-M1 (11 : 10 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-M1 and the Sony A7 II place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the E-M1 or the A7 II. 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 expert reviews are important. The following table reports the overall ratings of the cameras as published by some of the major camera 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»||+ +||84/100||4.5/5||4.5/5||4.5/5||Sep 2013||1,399||-||Olympus E-M1|
|Sony A7 II«||+||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-||Sony A7 II|
|Olympus E-M1 II« »||+ +||85/100||4.5/5||5/5||4.5/5||Sep 2016||1,999||-||Olympus E-M1 II|
|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-PL7« »||+||-||5/5||4.5/5||4/5||Aug 2014||599||-||Olympus E-PL7|
|Olympus E-P5« »||+ +||78/100||4.5/5||4.5/5||5/5||May 2013||999||-||Olympus E-P5|
|Olympus E-M5« »||+ +||80/100||4.5/5||5/5||5/5||Feb 2012||1,299||-||Olympus E-M5|
|Olympus E-PL5« »||+ +||-||4.5/5||4.5/5||4.5/5||Sep 2012||599||-||Olympus E-PL5|
|Olympus E-PM2« »||-||77/100||5/5||4.5/5||4.5/5||Sep 2012||499||-||Olympus E-PM2|
|Panasonic GH4« »||+ +||85/100||5/5||5/5||5/5||Feb 2014||1,499||-||Panasonic GH4|
|Panasonic GH3« »||+ +||79/100||4.5/5||5/5||4.5/5||Sep 2012||1,299||-||Panasonic GH3|
|Sony A7 III« »||+ +||89/100||5/5||5/5||5/5||Feb 2018||1,999||Sony A7 III|
|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« »||+ +||80/100||5/5||4.5/5||5/5||Oct 2013||1,699||-||Sony A7|
|Sony A7R« »||+ +||82/100||4.5/5||5/5||5/5||Oct 2013||2,299||-||Sony A7R|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.|
The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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. 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? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. 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 1D Mark IV vs Olympus E-M1 II
- Canon G9 X Mark II vs Olympus E-M1
- Canon M vs Sony A7 II
- Canon T5i vs Olympus E-M1 II
- Nikon D1H vs Olympus E-M1
- Nikon D5200 vs Sony A7 II
- Olympus E-330 vs Olympus E-M1 II
- Olympus E-M1 II vs Panasonic GH5s
- Olympus E-M1 III vs Panasonic FZ1000 II
- Olympus E-M1 III vs Panasonic GX9
- Olympus E-M1 vs Sony HX400V
- Panasonic FZ330 vs Sony A7 II
Specifications: Olympus E-M1 vs Sony A7 II
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
|Camera Model||Olympus E-M1||Sony A7 II|
|Camera Type||Mirrorless system camera||Mirrorless system camera|
|Camera Lens||Micro Four Thirds lenses||Sony E mount lenses|
|Launch Date||September 2013||November 2014|
|Launch Price||USD 1399||USD 1999|
|Sensor Specs||Olympus E-M1||Sony A7 II|
|Sensor Format||Four Thirds Sensor||Full Frame Sensor|
|Sensor Size||17.3 x 13.0 mm||35.8 x 23.9 mm|
|Sensor Area||224.9 mm2||855.62 mm2|
|Sensor Diagonal||21.6 mm||43 mm|
|Sensor Resolution||15.9 Megapixels||24 Megapixels|
|Image Resolution||4608 x 3456 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.76 μm||5.97 μm|
|Pixel Density||7.08 MP/cm2||2.80 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||1080/30p Video||1080/60p Video|
|ISO Setting||200-25600 ISO||100-25600 ISO|
|ISO Boost||100-25600 ISO||50-51200 ISO|
|Image Processor||TruePIC VII||BIONZ X|
|DXO Sensor Quality (score)||73||90|
|DXO Color Depth (bits)||23.0||24.9|
|DXO Dynamic Range (EV)||12.7||13.6|
|DXO Low Light (ISO)||757||2449|
|Screen Specs||Olympus E-M1||Sony A7 II|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2360k dots||2400k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0 inch||3.0 inch|
|LCD Resolution||1037k dots||1230k dots|
|LCD Attachment||Tilting screen||Tilting screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Olympus E-M1||Sony A7 II|
|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||10 shutter flaps/s||5 shutter flaps/s|
|Shutter Life Expectancy||150 000 actuations||200 000 actuations|
|Electronic Shutter||YES||no E-Shutter|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|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|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||UHS-I|
|Connectivity Specs||Olympus E-M1||Sony A7 II|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 2.0||USB 2.0|
|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|
|Body Specs||Olympus E-M1||Sony A7 II|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||350 shots per charge||350 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
130 x 94 x 63 mm
(5.1 x 3.7 x 2.5 in)
127 x 96 x 60 mm
(5.0 x 3.8 x 2.4 in)
|Camera Weight||497 g (17.5 oz)||599 g (21.1 oz)|
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