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 Sony A7R III and Olympus E-M1X side-by-side from the front, back and top in their relative dimensions.
Below you can see the front view size comparison of Sony A7R III and Olympus E-M1X. Sony A7R III is clearly the smaller of the two cameras. Its body is 17mm narrower, 51mm shorter and 1mm thinner than Olympus E-M1X.
Here is the back view size comparison of Sony A7R III and Olympus E-M1X.
Now lets look at the top view comparison of Sony A7R III and Olympus E-M1X.
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Sony A7R III is significantly lighter (340g ) than the Olympus E-M1X which may become a big advantage especially on long walking trips.
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 A7R III has a Full frame sensor and Olympus E-M1X has a smaller Four Thirds sensor, Olympus E-M1X's lenses for a similar focal length and aperture will generally be lighter and smaller than the Sony A7R III lenses.
Weight Comparison
Mirrorless Cameras
Thickness Comparison
Mirrorless Cameras
Weather Sealing
Both A7R III and E-M1X have weather sealings in their body, making them resistant to water and dust.
LCD Screen Size and Features
Sony A7R III and Olympus E-M1X's LCD screens has the same diagonal size of 3".
Sony A7R III has a 42.0MP Full frame (35.9 x 24 mm ) sized BSI-CMOS sensor and features Bionz X processor. On the other hand, Olympus E-M1X has a 20.0MP Four Thirds (17.4 x 13 mm ) sized CMOS sensor and features Dual TruePic VIII processor.
Sony A7R III's sensor provides 22MP more than Olympus E-M1X's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Another difference between these two cameras is that Sony A7R III's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moire occurring in certain scenes.
Below you can see the A7R III and E-M1X sensor size comparison.
As seen above, Sony A7R III has a 3.8x Larger sensor area than Olympus E-M1X. 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.
In this section, we rank and compare Sony A7R III and Olympus E-M1X 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.
Sony A7R III for Portrait Photography
Olympus E-M1X for Portrait Photography
Large Full frame (35.9 x 24 mm) sensor
Very High Resolution Sensor: 42.0MP
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Read the details
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
Sony A7R III for Street Photography
Olympus E-M1X for Street Photography
Large Full frame (35.9 x 24 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Tilting LCD Screen
Medium sized Body
Read the details
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
Sony A7R III for Sports Photography
Olympus E-M1X for Sports Photography
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 10.0fps
Environmental Sealings
Fast Max shutter speed: 1/8000s
425 Focus Points
Good Battery Life: 650 shots
Good Low Light ISO
Wireless Connection
Read the details
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 60.0fps
Environmental Sealings
Fast Max shutter speed: 1/8000s
121 Focus Points
Good Battery Life: 870 shots
Good Low Light ISO
Wireless Connection
Read the details
Sony A7R III for Daily Photography
Olympus E-M1X for Daily Photography
Large Full frame (35.9 x 24 mm) sensor
Environmental Sealings
Medium size Body
657g
Body Thickness 74mm
Read the details
Large Four Thirds (17.4 x 13 mm) sensor
Environmental Sealings
Medium size Body
997g
Body Thickness 75mm
Read the details
Sony A7R III for Landscape Photography
Olympus E-M1X for Landscape Photography
Large Full frame (35.9 x 24 mm) sensor
Very High Resolution Sensor: 42.0MP
Environmental Sealings
Live-view
Read the details
Large Four Thirds (17.4 x 13 mm) sensor
Very High Resolution Sensor: 20.0MP
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 A7R III has an advantage over Olympus E-M1X. There are 102 lenses for Sony A7R III's Sony E mount, on the other hand there are only 98 lenses for Olympus E-M1X's Micro Four Thirds lens mount.
Another important factor is the availability of image stabilization. Both Sony A7R III and Olympus E-M1X has Sensor based Image stabilization which means that all the lenses will be stabilized in these bodies.
| Lens Type |
# of Sony A7R III Lenses |
# of Olympus E-M1X Lenses |
| Standard Zoom |
9 (7 Full Frame) |
14 |
| Standard Prime |
17 (8 Full Frame) |
12 |
| Wideangle Zoom |
5 (4 Full Frame) |
4 |
| Wideangle Prime |
32 (17 Full Frame) |
26 |
| Telephoto Zoom |
6 (5 Full Frame) |
17 |
| Telephoto Prime |
13 (9 Full Frame) |
8 |
| SuperZoom |
8 (1 Full Frame) |
7 |
| Wideangle Fisheye Prime |
2 (0 Full Frame) |
5 |
| Macro Prime |
7 (6 Full Frame) |
4 |
| Perspective Control Prime |
2 (2 Full Frame) |
n/a |
| Telephoto Mirror Prime |
n/a |
1 |
| TOTAL |
102 (59 Full Frame) |
98 |
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 Sony A7R III and Olympus E-M1X, 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 Sony A7R III and Olympus E-M1X scores compare:
Sony A7R III
Ranked
#5 out of 65 in SLR-style mirrorless cameras
Ranked
#7 out of 1181 in all Cameras
Olympus E-M1X
Ranked
#20 out of 65 in SLR-style mirrorless cameras
Ranked
#37 out of 1181 in all Cameras
Sony A7R III scores higher than the Olympus E-M1X thanks to its better general imaging quality, compact size and higher value for the money. On the other hand, Olympus E-M1X has some extra features which may become a game changer if you have some specific requirements.
We recommend you to read our detailed Pro's and Con's section and see if any Pro of Olympus E-M1X is a must-have for you. If not, choose the Sony A7R III.
| General |
Sony Alpha A7R III |
Olympus OM-D E-M1X |
| Brand |
Sony |
Olympus |
| Announced |
2017-10-25 |
2019-01-24 |
| Body Type |
SLR-style mirrorless |
SLR-style mirrorless |
Sensor |
|
|
| Type |
BSI-CMOS |
CMOS |
| Size |
Full frame |
Four Thirds |
| Dimensions |
35.9 x 24 mm |
17.4 x 13 mm |
| Area |
861.60mm2 |
226.20mm2 |
| Megapixels |
42 megapixels |
20 megapixels |
| Max Resolution |
7952 x 5304 |
5184 x 3888 |
| Max Native Light sensitivity |
32,000 ISO |
25,600 ISO |
| Max Boosted Light Sensitivity |
102400 ISO |
- |
| Min Native Light sensitivity |
100 ISO |
200 ISO |
| Min Boosted Light Sensitivity |
50 ISO |
64 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 |
425 |
121 |
Lens |
|
|
| Manual Focus |
|
|
| Lens Mount |
Sony E |
Micro Four Thirds |
| Number of Available Lenses |
102 |
98 |
Screen |
|
|
| Type |
Tilting |
Fully Articulated |
| Size |
3" |
3" |
| Resolution |
1,440k dots |
1,037k dots |
| Touch Screen |
|
|
Viewfinder |
|
|
| Viewfinder |
Electronic |
Electronic |
| Viewfinder Resolution |
3,686k dots |
2,360k dots |
| Viewfinder Coverage |
100% |
100% |
| Viewfinder Magnification |
0.78 |
0.74 |
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 |
|
|
| External Flash |
|
|
| Continuous Shooting |
10.0 fps |
60.0 fps |
| Multi-Segment |
|
|
| Average |
|
|
| Spot |
|
|
| Partial |
|
|
| AF-Area |
|
|
| Center Weighted |
|
|
| AE Bracketing |
|
|
| WB Bracketing |
|
|
Video Features |
|
|
| Max Video Resolution |
3840 x 2160 |
4096 x 2160 |
| Video Formats |
MPEG-4, AVCHD, XAVC S |
MPEG-4, H.264 |
| Microphone Port |
|
|
| Headphone Port |
|
|
Connectivity |
|
|
| Wireless Connectivity |
Built-In |
Built-In |
| HDMI |
|
|
Physical |
|
|
| Environmental Sealing |
|
|
| Weight |
657g |
997g |
| Dimensions |
127 x 96 x 74mm |
144 x 147 x 75mm |
| Battery Life |
650 shots |
870 shots |
Other Features |
|
|
| Timelapse Recording |
With Downloadable App |
|
| GPS |
None |
Built-in |
DxO Sensor Scores |
|
|
| DxO Overall Score |
100 |
not tested |
| DxO Color Depth |
26.0 |
not tested |
| DxO Dynamic Range |
14.7 |
not tested |
| DxO Low Light ISO |
3523 |
not tested |
|
Report a correction |
Report a correction |