Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Olympus E-M1 II and Sony A7 III side-by-side from the front, back and top in their relative dimensions.
Below you can see the front view size comparison of Olympus E-M1 II and Sony A7 III. Olympus E-M1 II is 5mm shorter and 7mm thinner than Sony A7 III but it is also 7mm wider.
Here is the back view size comparison of Olympus E-M1 II and Sony A7 III.
Now lets look at the top view comparison of Olympus E-M1 II and Sony A7 III.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Olympus E-M1 II is 76g lighter than the Sony A7 III but we don't think this will make a significant difference.
Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since Sony A7 III has a Full frame sensor and Olympus E-M1 II has a smaller Four Thirds sensor, Olympus E-M1 II's lenses for a similar focal length and aperture will generally be lighter and smaller than the Sony A7 III lenses.
Weight Comparison
Mirrorless Cameras
Thickness Comparison
Mirrorless Cameras
Weather Sealing
Both E-M1 II and A7 III have weather sealings in their body, making them resistant to water and dust.
LCD Screen Size and Features
Olympus E-M1 II and Sony A7 III's LCD screens has the same diagonal size of 3".
Olympus E-M1 II has a 20.0MP Four Thirds (17.4 x 13 mm ) sized CMOS sensor and features TruePic VIII processor. On the other hand, Sony A7 III has a 24.0MP Full frame (35.8 x 23.8 mm ) sized BSI-CMOS sensor and features Bionz X processor.
Below you can see the E-M1 II and A7 III sensor size comparison.
As seen above, Sony A7 III has a 3.8x Larger sensor area than Olympus E-M1 II. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
DxOMark Sensor Scores
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. It scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Olympus E-M1 II and Sony A7 III sensors have been tested by DxO and the results show that A7 III has a better overall score of 96, 16 points higher compared to E-M1 II's score of 80.
In this section, we rank and compare Olympus E-M1 II and Sony A7 III for five different photography types in order to make your decision process easier in case you are specifically interested in one or more of these areas.
Olympus E-M1 II for Portrait Photography
Sony A7 III for Portrait Photography
Large Four Thirds (17.4 x 13 mm) sensor
Very High Resolution Sensor: 20.0MP
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Very High Resolution Sensor: 24.0MP
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Read the details
Olympus E-M1 II for Street Photography
Sony A7 III for Street Photography
Large Four Thirds (17.4 x 13 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Fully Articulated LCD Screen
Medium sized Body
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Tilting LCD Screen
Medium sized Body
Read the details
Olympus E-M1 II for Sports Photography
Sony A7 III for Sports Photography
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 15.0fps
Environmental Sealings
Fast Max shutter speed: 1/8000s
121 Focus Points
Good Low Light ISO
Wireless Connection
Read the details
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 10.0fps
Environmental Sealings
Fast Max shutter speed: 1/8000s
693 Focus Points
Good Battery Life: 610 shots
Good Low Light ISO
Wireless Connection
Read the details
Olympus E-M1 II for Daily Photography
Sony A7 III for Daily Photography
Large Four Thirds (17.4 x 13 mm) sensor
Environmental Sealings
Medium size Body
574g
Body Thickness 67mm
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Environmental Sealings
Medium size Body
650g
Body Thickness 74mm
Read the details
Olympus E-M1 II for Landscape Photography
Sony A7 III for Landscape Photography
Large Four Thirds (17.4 x 13 mm) sensor
Very High Resolution Sensor: 20.0MP
Environmental Sealings
Live-view
Read the details
Large Full frame (35.8 x 23.8 mm) sensor
Very High Resolution Sensor: 24.0MP
Environmental Sealings
Live-view
Read the details
Number of available lenses is a big decision factor while choosing your interchangeable lens camera. When we look at the available lenses for these two cameras, we see that Sony A7 III has an advantage over Olympus E-M1 II There are 115 lenses for Sony A7 III's Sony E mount, on the other hand there are only 101 lenses for Olympus E-M1 II's Micro Four Thirds lens mount.
Another important factor is the availability of image stabilization. Both Olympus E-M1 II and Sony A7 III has Sensor based Image stabilization which means that all the lenses will be stabilized in these bodies.
| Lens Type |
# of Olympus E-M1 II Lenses |
# of Sony A7 III Lenses |
| Standard Zoom |
14 |
10 (7 Full Frame) |
| Standard Prime |
12 |
17 (8 Full Frame) |
| Wideangle Zoom |
5 |
6 (5 Full Frame) |
| Wideangle Prime |
27 |
37 (22 Full Frame) |
| Telephoto Zoom |
17 |
9 (7 Full Frame) |
| Telephoto Prime |
8 |
16 (12 Full Frame) |
| SuperZoom |
8 |
8 (1 Full Frame) |
| Wideangle Fisheye Prime |
5 |
2 (0 Full Frame) |
| Macro Prime |
4 |
8 (7 Full Frame) |
| Perspective Control Prime |
n/a |
2 (2 Full Frame) |
| Telephoto Mirror Prime |
1 |
n/a |
| TOTAL |
101 |
115 (71 Full Frame) |
You may have already made your decision about which camera suits better for your needs and your budget so far but in case you wonder how we rated Olympus E-M1 II and Sony A7 III, below you can find their scores in five different aspects.
Our Decision Algorithm dynamically scores cameras using 63 different specs, current price and DxO Mark scores (where possible) in order to make a more objective and consistent comparison.
Here is a summary of how Olympus E-M1 II and Sony A7 III scores compare:
Olympus E-M1 II
Ranked
#15 out of 68 in SLR-style mirrorless cameras
Ranked
#27 out of 1190 in all Cameras
Sony A7 III
Ranked
#12 out of 68 in SLR-style mirrorless cameras
Ranked
#16 out of 1190 in all Cameras
Sony A7 III scores higher than the Olympus E-M1 II in Overall. It has better image quality and better value than Olympus E-M1 II. On the other hand, Olympus E-M1 II is more portable and has more features than Sony A7 III.
If image quality is very important for you and you want to get the most bang for your bucks, choose the Sony A7 III.
If you are looking for a small camera where you can take everywhere with you, and having more features are also important, Olympus E-M1 II is the right choice for you.
| General |
Olympus OM-D E-M1 Mark II |
Sony Alpha A7 III |
| Brand |
Olympus |
Sony |
| Announced |
2016-09-19 |
2018-02-27 |
| Body Type |
SLR-style mirrorless |
SLR-style mirrorless |
Sensor |
|
|
| Type |
CMOS |
BSI-CMOS |
| Size |
Four Thirds |
Full frame |
| Dimensions |
17.4 x 13 mm |
35.8 x 23.8 mm |
| Area |
226.20mm2 |
852.04mm2 |
| Megapixels |
20 megapixels |
24 megapixels |
| Max Resolution |
5184 x 3888 |
6000 x 4000 |
| Max Native Light sensitivity |
25,600 ISO |
51,200 ISO |
| Max Boosted Light Sensitivity |
- |
204800 ISO |
| Min Native Light sensitivity |
200 ISO |
100 ISO |
| Min Boosted Light Sensitivity |
64 ISO |
50 ISO |
| RAW Support |
|
|
Autofocus |
|
|
| AF Touch |
|
|
| AF Continuous |
|
|
| AF Single |
|
|
| AF Tracking |
|
|
| AF Selective |
|
|
| AF Center |
|
|
| AF Multi Area |
|
|
| AF Live View |
|
|
| AF Face Detection |
|
|
| AF Contrast Detection |
|
|
| AF Phase Detection |
|
|
| Number of Focus Points |
121 |
693 |
Lens |
|
|
| Manual Focus |
|
|
| Lens Mount |
Micro Four Thirds |
Sony E |
| Number of Available Lenses |
101 |
115 |
Screen |
|
|
| Type |
Fully Articulated |
Tilting |
| Size |
3" |
3 |
| Resolution |
1,037k dots |
922k dots |
| Touch Screen |
|
|
Viewfinder |
|
|
| Viewfinder |
Electronic |
Electronic |
| Viewfinder Resolution |
2,360k dots |
2,359k dots |
| Viewfinder Coverage |
100% |
100% |
| Viewfinder Magnification |
0.74 |
0.78 |
Photography Features |
|
|
| Max Shutter Speed |
1/8000s |
1/8000s |
| Shutter Priority |
|
|
| Aperture Priority |
|
|
| Manual Exposure Mode |
|
|
| Custom White Balance |
|
|
| Image Stabilization |
Sensor-shift |
Sensor-shift |
| Built-in Flash |
|
|
| Flash Range |
9.10 m (at ISO 100) |
no built-in flash |
| External Flash |
|
|
| Continuous Shooting |
15.0 fps |
10.0 fps |
| Multi-Segment |
|
|
| Average |
|
|
| Spot |
|
|
| Partial |
|
|
| AF-Area |
|
|
| Center Weighted |
|
|
| AE Bracketing |
|
|
| WB Bracketing |
|
|
Video Features |
|
|
| Max Video Resolution |
4096 x 2160 |
3840 x 2160 |
| Video Formats |
MOV, H.264 |
MPEG-4, AVCHD, XAVC S, H.264 |
| Microphone Port |
|
|
| Headphone Port |
|
|
Connectivity |
|
|
| Wireless Connectivity |
Built-In |
Built-In |
| HDMI |
|
|
Physical |
|
|
| Environmental Sealing |
|
|
| Weight |
574g |
650g |
| Dimensions |
134 x 91 x 67mm |
127 x 96 x 74mm |
| Battery Life |
350 shots |
610 shots |
Other Features |
|
|
| Timelapse Recording |
|
|
| GPS |
None |
None |
DxO Sensor Scores |
|
|
| DxO Overall Score |
80 |
96 |
| DxO Color Depth |
23.7 |
25.0 |
| DxO Dynamic Range |
12.8 |
14.7 |
| DxO Low Light ISO |
1312 |
3730 |
|
Report a correction |
Report a correction |