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Sony A7 vs Olympus E-M10 III

The Sony Alpha A7 and the Olympus OM-D E-M10 Mark III are two digital cameras that were officially introduced, respectively, in October 2013 and August 2017. Both the A7 and the E-M10 III are mirrorless interchangeable lens cameras that are based on a full frame (A7) and a Four Thirds (E-M10 III) sensor. The Sony has a resolution of 24 megapixels, whereas the Olympus provides 15.9 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Sony A7
versus
Olympus E-M10 III
Sony A7   Olympus E-M10 III
Mirrorless system camera Mirrorless system camera
Sony E mount lenses Micro Four Thirds lenses
24 MP – Full Frame sensor 15.9 MP – Four Thirds sensor
1080/60p Video 4K/30p Video
ISO 100-25,600 (50 - 51,200) ISO 200-25,600
Electronic viewfinder (2400k dots) Electronic viewfinder (2360k dots)
3.0" LCD – 1230k dots 3.0" LCD – 1040k dots
Tilting screen (no touchscreen) Tilting touchscreen
5 shutter flaps per second 8.6 shutter flaps per second
Lens stabilization onlyIn-body stabilization
Weathersealed bodynot weather sealed
340 shots per battery charge330 shots per battery charge
127 x 94 x 48 mm, 474 g 122 x 84 x 50 mm, 410 g
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Check E-M10 III offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A7 and the Olympus OM-D E-M10 Mark 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.

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Body comparison

An illustration of the physical size and weight of the Sony A7 and the Olympus E-M10 III is provided 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 width, height and depth dimensions are rounded to the nearest millimeter.

The E-M10 III can be obtained in two different colors (black, silver), while the A7 is only available in black.

Size Sony A7 vs Olympus E-M10 III
Compare A7 versus E-M10 III top
Comparison A7 or E-M10 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M10 III is notably smaller (14 percent) than the Sony A7. Moreover, the E-M10 III is markedly lighter (14 percent) than the A7. It is worth mentioning in this context that the A7 is splash and dust resistant, while the E-M10 III does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Sony FE Lens Catalog (A7) and the Micro Four Thirds Lens Catalog (E-M10 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 A7 gets 340 shots out of its NP-FW50 battery, while the E-M10 III can take 330 images on a single charge of its BLS-50 power pack. The power pack in the A7 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Sony A7 127 mm 94 mm 48 mm 474 g 340 Y Oct 2013 1,699ebay.com
2.
 
Olympus E-M10 III 122 mm 84 mm 50 mm 410 g 330 n Aug 2017 649ebay.com
3.
 
Nikon D610 141 mm 113 mm 82 mm 850 g 900 Y Oct 2013 1,999ebay.com
4.
 
Olympus E-M10 IV 122 mm 84 mm 49 mm 383 g 360 n Aug 2020 699 amazon.com
5.
 
Olympus E-PL10 117 mm 68 mm 39 mm 380 g 350 n Oct 2019 599ebay.com
6.
 
Olympus E-PL9 117 mm 68 mm 39 mm 380 g 350 n Feb 2018 599ebay.com
7.
 
Olympus E-PL8 115 mm 67 mm 38 mm 357 g 350 n Sep 2016 549ebay.com
8.
 
Olympus E-M10 II 120 mm 83 mm 47 mm 390 g 320 n Aug 2015 649ebay.com
9.
 
Panasonic GH4 133 mm 93 mm 84 mm 560 g 500 Y Feb 2014 1,499ebay.com
10.
 
Samsung NX1 139 mm 102 mm 66 mm 550 g 500 Y Sep 2014 1,499ebay.com
11.
 
Sony A7C 124 mm 71 mm 60 mm 509 g 740 Y Sep 2020 1,799 amazon.com
12.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 amazon.com
13.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999ebay.com
14.
 
Sony A7S 127 mm 94 mm 48 mm 489 g 380 Y Apr 2014 2,499ebay.com
15.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299ebay.com
16.
 
Sony RX1R 113 mm 65 mm 70 mm 482 g 270 n Jun 2013 2,799ebay.com
17.
 
Sony RX1 113 mm 65 mm 70 mm 482 g 270 n Sep 2012 2,799ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The E-M10 III was launched at a markedly lower price (by 62 percent) than the A7, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the imaging sensor is a crucial determinant 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 Sony A7 features a full frame sensor and the Olympus E-M10 III a Four Thirds sensor. The sensor area in the E-M10 III is 74 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.0. The sensor in the A7 has a native 3:2 aspect ratio, while the one in the E-M10 III offers a 4:3 aspect.

Sony A7 and Olympus E-M10 III sensor measures

With 24MP, the A7 offers a higher resolution than the E-M10 III (15.9MP), but the A7 nevertheless has larger individual pixels (pixel pitch of 5.97μm versus 3.76μm for the E-M10 III) due to its larger sensor. However, the E-M10 III is a much more recent model (by 3 years and 10 months) than the A7, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the E-M10 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A7 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 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 III 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 A7 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Sony Alpha A7 has a native sensitivity range from ISO 100 to ISO 25600, which can be extended to ISO 50-51200. The corresponding ISO settings for the Olympus OM-D E-M10 Mark III are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

A7 versus E-M10 III MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

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Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Sony A7 Full Frame 24.0 6000 40001080/60p24.814.2224890
2.
 
Olympus E-M10 III Four Thirds 15.9 4608 34564K/30p23.112.8112074
3.
 
Nikon D610 Full Frame 24.2 6016 40161080/30p25.114.4292594
4.
 
Olympus E-M10 IV Four Thirds 20.2 5184 38884K/30p23.313.2140276
5.
 
Olympus E-PL10 Four Thirds 15.9 4608 34564K/30p23.313.1132476
6.
 
Olympus E-PL9 Four Thirds 15.9 4608 34564K/30p23.112.8116274
7.
 
Olympus E-PL8 Four Thirds 15.9 4608 34561080/30p23.012.6103073
8.
 
Olympus E-M10 II Four Thirds 15.9 4608 34561080/60p23.112.584273
9.
 
Panasonic GH4 Four Thirds 15.9 4608 34564K/30p23.212.879174
10.
 
Samsung NX1 APS-C 28.0 6480 43204K/30p24.213.2136383
11.
 
Sony A7C Full Frame 24.0 6000 40004K/30p25.014.7340795
12.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
13.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
14.
 
Sony A7S Full Frame 12.0 4240 28321080/60p23.913.2370287
15.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.1274695
16.
 
Sony RX1R Full Frame 24.0 6000 40001080/60p25.013.6253791
17.
 
Sony RX1 Full Frame 24.0 6000 40001080/60p25.114.3253493
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the E-M10 III provides a better video resolution than the A7. It can shoot movie footage at 4K/30p, while the Sony is limited to 1080/60p.

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Feature comparison

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 A7 offers a slightly higher resolution than the one in the E-M10 III (2400k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Sony A7, the Olympus E-M10 III, and comparable cameras.

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Core Features
# image Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Sony A72400 n3.0 / 1230 tilting n 1/8000s 5.0/s n n
2.
 
Olympus E-M10 III2360 n3.0 / 1040 tilting Y 1/4000s 8.6/s Y Y
3.
 
Nikon D610optical Y3.2 / 921 fixed n 1/4000s 6.0/s Y n
4.
 
Olympus E-M10 IV2360 n3.0 / 1040 tilting Y 1/4000s 15.0/s Y Y
5.
 
Olympus E-PL10none n3.0 / 1040 tilting Y 1/4000s 8.6/s Y Y
6.
 
Olympus E-PL9none n3.0 / 1040 tilting Y 1/4000s 8.6/s Y Y
7.
 
Olympus E-PL8optional n3.0 / 1037 tilting Y 1/4000s 8.0/s n Y
8.
 
Olympus E-M10 II2360 n3.0 / 1040 tilting Y 1/4000s 8.0/s Y Y
9.
 
Panasonic GH42359 n3.0 / 1036 swivel Y 1/8000s 12.0/s Y n
10.
 
Samsung NX12360 Y3.0 / 1036 tilting Y 1/8000s 15.0/s Y n
11.
 
Sony A7C2360 n3.0 / 922 swivel Y 1/4000s 10.0/s n Y
12.
 
Sony A7 III2359 n3.0 / 922 tilting Y 1/8000s 10.0/s n Y
13.
 
Sony A7 II2400 n3.0 / 1230 tilting n 1/8000s 5.0/s n Y
14.
 
Sony A7S2400 n3.0 / 921 tilting n 1/8000s 5.0/s n n
15.
 
Sony A7R2400 n3.0 / 1230 tilting n 1/8000s 4.0/s n n
16.
 
Sony RX1Roptional n3.0 / 1229 fixed n 1/4000s 5.0/s Y n
17.
 
Sony RX1optional n3.0 / 1229 fixed n 1/4000s 5.0/s Y n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The E-M10 III has a touchscreen, while the A7 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-M10 III 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 III 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 A7 writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the E-M10 III uses SDXC cards. The E-M10 III supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the A7 can use UHS-I cards (up to 104 MB/s).

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Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Sony Alpha A7 and Olympus OM-D E-M10 Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Sony A7Ystereo / monoYYmicro2.0YY-
2.
 
Olympus E-M10 IIIYstereo / mono--micro2.0Y--
3.
 
Nikon D610Ymono / monoYYmini2.0---
4.
 
Olympus E-M10 IVYstereo / mono--micro2.0Y-Y
5.
 
Olympus E-PL10Ystereo / mono--micro2.0Y-Y
6.
 
Olympus E-PL9Ystereo / mono--micro2.0Y-Y
7.
 
Olympus E-PL8Ystereo / mono--micro2.0Y--
8.
 
Olympus E-M10 IIYstereo / mono--micro2.0Y--
9.
 
Panasonic GH4Ystereo / monoYYmicro2.0YY-
10.
 
Samsung NX1Ystereo / monoYYmicro3.0YYY
11.
 
Sony A7CYstereo / monoYYmicro3.2YYY
12.
 
Sony A7 IIIYstereo / monoYYmicro3.1YYY
13.
 
Sony A7 IIYstereo / monoYYmicro2.0YY-
14.
 
Sony A7SYstereo / monoYYmicro2.0YY-
15.
 
Sony A7RYstereo / monoYYmicro2.0YY-
16.
 
Sony RX1RYstereo / monoY-mini2.0---
17.
 
Sony RX1Ystereo / monoY-mini2.0---
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It is notable that the A7 has a microphone port, which is missing on the E-M10 III. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.

Both the A7 and the E-M10 III have been discontinued, but can regularly be found used on ebay. The A7 was replaced by the Sony A7 II, while the E-M10 III was followed by the Olympus E-M10 IV. Further information on the features and operation of the A7 and E-M10 III can be found, respectively, in the Sony A7 Manual (free pdf) or the online Olympus E-M10 III Manual.

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Review summary

So what is the bottom line? Is the Sony A7 better than the Olympus E-M10 III or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Sony Alpha A7:

  • More detail: Offers more megapixels (24 vs 15.9MP) with a 25% higher linear resolution.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.62x).
  • More detailed LCD: Has a higher resolution rear screen (1230k vs 1040k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More heavily discounted: Has been available for much longer (launched in October 2013).

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Arguments in favor of the Olympus OM-D E-M10 Mark III:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (8.6 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.
  • More compact: Is smaller (122x84mm vs 127x94mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 64g or 14 percent) and is thus easier to take along.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More affordable: Was introduced into a lower priced category (62 percent cheaper at launch).
  • More modern: Reflects 3 years and 10 months of technical progress since the A7 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the E-M10 III comes out slightly ahead of the A7 (13 : 12 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 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.

A7 12:13 E-M10 III

How about other alternatives? Do the specifications of the Sony A7 and the Olympus E-M10 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the A7 and the E-M10 III in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Sony A75/5+ +..80/1005/55/5 Oct 2013 1,699ebay.com
2.
 
Olympus E-M10 III..+5/580/1004.5/54.5/5 Aug 2017 649ebay.com
3.
 
Nikon D6104/5+ +..87/1004.5/54.5/5 Oct 2013 1,999ebay.com
4.
 
Olympus E-M10 IV4.5/5..5/581/1004.5/54.5/5 Aug 2020 699 amazon.com
5.
 
Olympus E-PL10....4/577/100..4/5 Oct 2019 599ebay.com
6.
 
Olympus E-PL9..+....4.5/54/5 Feb 2018 599ebay.com
7.
 
Olympus E-PL8........4.5/54/5 Sep 2016 549ebay.com
8.
 
Olympus E-M10 II4.5/5+ +..80/1005/55/5 Aug 2015 649ebay.com
9.
 
Panasonic GH45/5+ +..85/1005/55/5 Feb 2014 1,499ebay.com
10.
 
Samsung NX15/5....87/1005/55/5 Sep 2014 1,499ebay.com
11.
 
Sony A7C3.5/5..3.5/586/1004/54/5 Sep 2020 1,799 amazon.com
12.
 
Sony A7 III..+ +4.5/589/1005/55/5 Feb 2018 1,999 amazon.com
13.
 
Sony A7 II5/5+4/582/1004.5/55/5 Nov 2014 1,999ebay.com
14.
 
Sony A7S4/5....86/1004.5/55/5 Apr 2014 2,499ebay.com
15.
 
Sony A7R5/5+ +..82/1004.5/55/5 Oct 2013 2,299ebay.com
16.
 
Sony RX1R5/5......4/54.5/5 Jun 2013 2,799ebay.com
17.
 
Sony RX15/5....79/1004/54.5/5 Sep 2012 2,799ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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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.

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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.

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    Specifications: Sony A7 vs Olympus E-M10 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 Specifications
    Camera Model Sony A7 Olympus E-M10 III
    Camera Type Mirrorless system camera Mirrorless system camera
    Camera Lens Sony E mount lenses Micro Four Thirds lenses
    Launch Date October 2013 August 2017
    Launch Price USD 1,699 USD 649
    Sensor Specs Sony A7 Olympus E-M10 III
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Four Thirds Sensor
    Sensor Size 35.8 x 23.9 mm 17.3 x 13.0 mm
    Sensor Area 855.62 mm2 224.9 mm2
    Sensor Diagonal 43 mm 21.6 mm
    Crop Factor 1.0x 2.0x
    Sensor Resolution 24 Megapixels 15.9 Megapixels
    Image Resolution 6000 x 4000 pixels 4608 x 3456 pixels
    Pixel Pitch 5.97 μm 3.76 μm
    Pixel Density 2.80 MP/cm2 7.08 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 1080/60p Video 4K/30p Video
    ISO Setting 100 - 25,600 ISO 200 - 25,600 ISO
    ISO Boost 50 - 51,200 ISO 100 - 25,600 ISO
    Image Processor BIONZ X TruePic VIII
    DXO Sensor Quality (score) 90 ..
    DXO Color Depth (bits) 24.8 ..
    DXO Dynamic Range (EV) 14.2 ..
    DXO Low Light (ISO) 2248 ..
    Screen Specs Sony A7 Olympus E-M10 III
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.71x 0.62x
    Viewfinder Resolution 2400k dots 2360k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1230k dots 1040k dots
    LCD Attachment Tilting screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Sony A7 Olympus E-M10 III
    Focus System On-Sensor Phase-detect Contrast-detect AF
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/8000s 1/4000s
    Continuous Shooting 5 shutter flaps/s 8.6 shutter flaps/s
    Electronic Shutterno E-Shutterup to 1/16000s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium MS or SDXC cards SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support UHS-I UHS-II
    Connectivity Specs Sony A7 Olympus E-M10 III
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI micro HDMI
    Microphone Port External MIC port no MIC socket
    Headphone Socket Headphone port no Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Near-Field Communication NFC built-in no NFC
    Body Specs Sony A7 Olympus E-M10 III
    Environmental SealingWeathersealed bodynot weather sealed
    Battery Type NP-FW50 BLS-50
    Battery Life (CIPA)340 shots per charge330 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 127 x 94 x 48 mm
    (5.0 x 3.7 x 1.9 in)
    122 x 84 x 50 mm
    (4.8 x 3.3 x 2.0 in)
    Camera Weight 474 g (16.7 oz) 410 g (14.5 oz)
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