Olympus E-M10 II vs Sony A77
The Olympus OM-D E-M10 Mark II and the Sony Alpha SLT-A77 are two digital cameras that were announced, respectively, in August 2015 and August 2011. The E-M10 II is a mirrorless interchangeable lens camera, while the A77 is a DSLR. The cameras are based on a Four Thirds (E-M10 II) and an APS-C (A77) 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus OM-D E-M10 Mark II and the Sony Alpha SLT-A77? 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.
An illustration of the physical size and weight of the Olympus E-M10 II and the Sony A77 is provided 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 size dimensions are rounded to the nearest millimeter.
The E-M10 II can be obtained in three different colors (black, silver, brown), while the A77 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 A77 is considerably larger (49 percent) than the Olympus E-M10 II. Moreover, the A77 is substantially heavier (88 percent) than the E-M10 II. It is noteworthy in this context that the A77 is splash and dust-proof, while the E-M10 II 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
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, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Olympus E-M10 II||120 mm||83 mm||47 mm||390 g||320||n||Aug 2015||649|
|2.||Sony A77||143 mm||104 mm||81 mm||732 g||470||Y||Aug 2011||1,399|
|3.||Olympus E-PL9||117 mm||68 mm||39 mm||380 g||350||n||Feb 2018||599|
|4.||Olympus E-M10 III||122 mm||84 mm||50 mm||410 g||330||n||Aug 2017||649|
|5.||Olympus E-PL8||115 mm||67 mm||38 mm||357 g||350||n||Sep 2016||549|
|6.||Olympus PEN-F||125 mm||72 mm||37 mm||427 g||330||n||Jan 2016||1,199|
|7.||Olympus E-M10||119 mm||82 mm||46 mm||396 g||320||n||Jan 2014||699|
|8.||Olympus E-PL7||115 mm||67 mm||38 mm||357 g||350||n||Aug 2014||599|
|9.||Olympus E-P5||122 mm||69 mm||37 mm||420 g||330||n||May 2013||999|
|10.||Olympus E-PL6||111 mm||64 mm||38 mm||325 g||360||n||May 2013||599|
|11.||Olympus E-PL5||111 mm||64 mm||38 mm||325 g||360||n||Sep 2012||599|
|12.||Panasonic GX85||122 mm||71 mm||44 mm||426 g||290||n||Apr 2016||799|
|13.||Pentax K-3||131 mm||100 mm||77 mm||800 g||560||Y||Oct 2013||1,299|
|14.||Sony A6500||120 mm||67 mm||53 mm||453 g||350||Y||Oct 2016||1,399|
|15.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999|
|16.||Sony A77 II||143 mm||104 mm||81 mm||647 g||480||Y||May 2014||1,199|
|17.||Sony A99||147 mm||111 mm||78 mm||812 g||500||Y||Sep 2012||2,799|
|Notes: 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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The E-M10 II was launched at a markedly lower price (by 54 percent) than the A77, 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.
The size of the imaging sensor is a crucial determinant 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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better 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 II features a Four Thirds sensor and the Sony A77 an APS-C sensor. The sensor area in the A77 is 63 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the E-M10 II has a native 4:3 aspect ratio, while the one in the A77 offers a 3:2 aspect.
In terms of underlying technology, both cameras are build around CMOS sensors.
With 24MP, the A77 offers a higher resolution than the E-M10 II (15.9MP), but the A77 nevertheless has larger individual pixels (pixel pitch of 3.91μm versus 3.76μm for the E-M10 II) due to its larger sensor. However, the E-M10 II is a much more recent model (by 4 years) than the A77, and its sensor will 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 the E-M10 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A77 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A77 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Olympus E-M10 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 Olympus OM-D E-M10 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 SLT-A77 are ISO 100 to ISO 16000, with the possibility to increase the ISO range to 50-25600.
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 A77 has a markedly higher DXO score than the E-M10 II (overall score 5 points higher), which will translate into better image quality. The advantage is based on 0.9 bits higher color depth, 0.7 EV in additional dynamic range, and 0.1 stops of reduced low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|1.||Olympus E-M10 II||Four Thirds||15.9||4608||3456||1080/60p||23.1||12.5||842||73|
|3.||Olympus E-PL9||Four Thirds||15.9||4608||3456||4K/30p||23.1||12.8||1162||74|
|4.||Olympus E-M10 III||Four Thirds||15.9||4608||3456||4K/30p||23.1||12.8||1120||74|
|5.||Olympus E-PL8||Four Thirds||15.9||4608||3456||1080/30p||23.0||12.6||1030||73|
|6.||Olympus PEN-F||Four Thirds||20.2||5184||3888||1080/60p||23.1||12.4||894||74|
|7.||Olympus E-M10||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||884||72|
|8.||Olympus E-PL7||Four Thirds||15.9||4608||3456||1080/30p||22.7||12.4||873||72|
|9.||Olympus E-P5||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.4||895||72|
|10.||Olympus E-PL6||Four Thirds||15.9||4608||3456||1080/30p||22.5||12.0||717||68|
|11.||Olympus E-PL5||Four Thirds||15.9||4608||3456||1080/30p||22.8||12.3||889||72|
|12.||Panasonic GX85||Four Thirds||15.8||4592||3448||4K/30p||22.9||12.6||662||71|
|15.||Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|16.||Sony A77 II||APS-C||24.0||6000||4000||1080/60p||23.5||12.7||1442||77|
|17.||Sony A99||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (1080/60p).
Beyond body and sensor, cameras can and do differ across a range of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the E-M10 II offers a slightly higher resolution than the one in the A77 (2360k vs 2359k dots). The adjacent table lists some of the other core features of the Olympus E-M10 II and Sony A77 along with similar information for a selection of comparators.
|1.||Olympus E-M10 II||2360||n||3.0 / 1040||tilting||Y||1/4000s||8.0||Y||Y|
|2.||Sony A77||2359||Y||3.0 / 921||full-flex||n||1/8000s||12.0||Y||Y|
|3.||Olympus E-PL9||none||n||3.0 / 1040||tilting||Y||1/4000s||8.6||Y||Y|
|4.||Olympus E-M10 III||2360||n||3.0 / 1040||tilting||Y||1/4000s||8.6||Y||Y|
|5.||Olympus E-PL8||optional||n||3.0 / 1037||tilting||Y||1/4000s||8.0||n||Y|
|6.||Olympus PEN-F||2360||n||3.0 / 1037||swivel||Y||1/8000s||10.0||n||Y|
|7.||Olympus E-M10||1440||n||3.0 / 1037||tilting||Y||1/4000s||8.0||Y||Y|
|8.||Olympus E-PL7||optional||n||3.0 / 1037||tilting||Y||1/4000s||8.0||n||Y|
|9.||Olympus E-P5||optional||n||3.0 / 1037||tilting||Y||1/8000s||9.0||Y||Y|
|10.||Olympus E-PL6||optional||n||3.0 / 460||tilting||Y||1/4000s||8.0||n||Y|
|11.||Olympus E-PL5||optional||n||3.0 / 460||tilting||Y||1/4000s||8.0||n||Y|
|12.||Panasonic GX85||2765||n||3.0 / 1040||tilting||Y||1/4000s||8.0||Y||Y|
|13.||Pentax K-3||optical||Y||3.2 / 1037||fixed||n||1/8000s||8.3||Y||Y|
|14.||Sony A6500||2359||n||3.0 / 922||tilting||Y||1/4000s||11.0||Y||Y|
|15.||Sony A7 II||2400||n||3.0 / 1230||tilting||n||1/8000s||5.0||n||Y|
|16.||Sony A77 II||2359||Y||3.0 / 1229||full-flex||n||1/8000s||12.0||Y||Y|
|17.||Sony A99||2359||Y||3.0 / 1229||full-flex||n||1/8000s||6.0||n||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The E-M10 II has a touchscreen, while the A77 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The A77 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the E-M10 II 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, the E-M10 II 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-M10 II 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-M10 II writes its imaging data to SDXC cards, while the A77 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-M10 Mark II and Sony Alpha SLT-A77 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Olympus E-M10 II||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|2.||Sony A77||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|3.||Olympus E-PL9||Y||stereo / mono||-||-||micro||2.0||Y||-||Y|
|4.||Olympus E-M10 III||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|5.||Olympus E-PL8||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|6.||Olympus PEN-F||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|7.||Olympus E-M10||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|8.||Olympus E-PL7||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|9.||Olympus E-P5||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|10.||Olympus E-PL6||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|11.||Olympus E-PL5||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|12.||Panasonic GX85||Y||stereo / mono||-||-||micro||2.0||Y||-||-|
|13.||Pentax K-3||Y||mono / mono||Y||Y||mini||3.0||-||-||-|
|14.||Sony A6500||Y||stereo / mono||Y||-||micro||2.0||Y||Y||-|
|15.||Sony A7 II||Y||stereo / mono||Y||Y||micro||2.0||Y||Y||-|
|16.||Sony A77 II||Y||stereo / mono||Y||-||mini||2.0||Y||Y||-|
|17.||Sony A99||Y||stereo / mono||Y||Y||mini||2.0||-||-||-|
It is notable that the E-M10 II offers wifi support, while the A77 does not. Wifi can be a very convenient means to transfer image data to an off-camera location.
Studio photographers will appreciate that the Sony A77 (unlike the E-M10 II) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Travel and landscape photographers will find it useful that the A77 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the E-M10 II and the A77 have been discontinued, but can regularly be found used on eBay. The A77 was replaced by the Sony A77 II, while the E-M10 II was followed by the Olympus E-M10 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 there a clear favorite between the Olympus E-M10 II and the Sony A77? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Olympus OM-D E-M10 Mark II:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 921k dots).
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- More compact: Is smaller (120x83mm vs 143x104mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 342g or 47 percent) and hence easier to carry around.
- More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- More affordable: Was introduced into a lower priced category (54 percent cheaper at launch).
- More modern: Reflects 4 years of technical progress since the A77 launch.
Arguments in favor of the Sony Alpha SLT-A77:
- 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 markedly higher (5 points) in the DXO overall evaluation.
- More dynamic range: Captures a broader range of light and dark details (0.7 EV of extra DR).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.73x vs 0.62x).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- More flexible LCD: Has a full-flex 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 shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (12 vs 8 flaps/sec) to capture the decisive moment.
- Longer lasting: Gets more shots (470 versus 320) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- More heavily discounted: Has been around for much longer (launched in August 2011).
If the number of relative strengths (bullet points above) is taken as a guide, the A77 is the clear winner of the contest (16 : 11 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 II and the Sony A77 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the E-M10 II and the A77 in practical situations. 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-M10 II||4.5/5||+ +||..||80/100||5/5||5/5||Aug 2015||649|
|2.||Sony A77||5/5||91/100||..||81/100||..||5/5||Aug 2011||1,399|
|3.||Olympus E-PL9||..||+||..||..||4.5/5||4/5||Feb 2018||599|
|4.||Olympus E-M10 III||..||+||5/5||80/100||4.5/5||4.5/5||Aug 2017||649|
|5.||Olympus E-PL8||..||..||..||..||4.5/5||4/5||Sep 2016||549|
|6.||Olympus PEN-F||..||..||4/5||82/100||4.5/5||5/5||Jan 2016||1,199|
|7.||Olympus E-M10||4/5||..||..||80/100||5/5||5/5||Jan 2014||699|
|8.||Olympus E-PL7||4/5||+||..||..||5/5||4/5||Aug 2014||599|
|9.||Olympus E-P5||5/5||+ +||..||78/100||4.5/5||5/5||May 2013||999|
|10.||Olympus E-PL6||..||..||..||..||..||..||May 2013||599|
|11.||Olympus E-PL5||3/5||+ +||..||..||4.5/5||4.5/5||Sep 2012||599|
|12.||Panasonic GX85||4.5/5||+ +||..||82/100||5/5||5/5||Apr 2016||799|
|13.||Pentax K-3||4/5||..||..||83/100||5/5||5/5||Oct 2013||1,299|
|14.||Sony A6500||5/5||+ +||3.5/5||85/100||4.5/5||4.5/5||Oct 2016||1,399|
|15.||Sony A7 II||5/5||+||4/5||82/100||4.5/5||5/5||Nov 2014||1,999|
|16.||Sony A77 II||4/5||..||..||80/100||4.5/5||5/5||May 2014||1,199|
|17.||Sony A99||5/5||..||..||84/100||4.5/5||4.5/5||Sep 2012||2,799|
|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 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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 1Ds Mark II vs Olympus E-M10 II
- Canon 5D vs Sony A77
- Canon G9 X Mark II vs Olympus E-M10 II
- Canon SX710 vs Olympus E-M10 II
- Canon T3 vs Sony A77
- Nikon A1000 vs Sony A77
- Nikon D40 vs Olympus E-M10 II
- Nikon Z50 vs Olympus E-M10 II
- Olympus E-M10 II vs Olympus E-M5 II
- Panasonic FZ1000 vs Sony A77
- Panasonic G5 vs Sony A77
- Panasonic GX800 vs Sony A77
Specifications: Olympus E-M10 II vs Sony A77
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 II||Sony A77|
|Camera Type||Mirrorless system camera||Digital single lens reflex|
|Camera Lens||Micro Four Thirds lenses||Sony A mount lenses|
|Launch Date||August 2015||August 2011|
|Launch Price||USD 649||USD 1,399|
|Sensor Specs||Olympus E-M10 II||Sony A77|
|Sensor Format||Four Thirds Sensor||APS-C Sensor|
|Sensor Size||17.3 x 13.0 mm||23.5 x 15.6 mm|
|Sensor Area||224.9 mm2||366.6 mm2|
|Sensor Diagonal||21.6 mm||28.2 mm|
|Sensor Resolution||15.9 Megapixels||24 Megapixels|
|Image Resolution||4608 x 3456 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.76 μm||3.91 μm|
|Pixel Density||7.08 MP/cm2||6.55 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||1080/60p Video||1080/60p Video|
|ISO Setting||200 - 25,600 ISO||100 - 16,000 ISO|
|ISO Boost||100 - 25,600 ISO||50 - 25,600 ISO|
|Image Processor||TruePic VII||BIONZ X|
|DXO Sensor Quality (score)||73||78|
|DXO Color Depth (bits)||23.1||24.0|
|DXO Dynamic Range (EV)||12.5||13.2|
|DXO Low Light (ISO)||842||801|
|Screen Specs||Olympus E-M10 II||Sony A77|
|Viewfinder Type||Electronic viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2360k dots||2359k dots|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||1040k dots||921k dots|
|LCD Attachment||Tilting screen||Fully flexible screen|
|Touch Input||Touchscreen||no Touchscreen|
|Shooting Specs||Olympus E-M10 II||Sony A77|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||8 shutter flaps/s||12 shutter flaps/s|
|Electronic Shutter||up to 1/16000s||no E-Shutter|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Image Stabilization||In-body stabilization||In-body stabilization|
|Fill Flash||Built-in Flash||Built-in 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-M10 II||Sony A77|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||micro HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||Wifi built-in||no Wifi|
|Geotagging||no internal GPS||GPS built-in|
|Body Specs||Olympus E-M10 II||Sony A77|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||320 shots per charge||470 shots per charge|
120 x 83 x 47 mm
(4.7 x 3.3 x 1.9 in)
143 x 104 x 81 mm
(5.6 x 4.1 x 3.2 in)
|Camera Weight||390 g (13.8 oz)||732 g (25.8 oz)|
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