Sony A7 vs Olympus E-M1 II

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Sony A7 vs Olympus E-M1 II

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35mm 855.6mm²
24.3 megapixels
ISO 100 - 25,600

Go in depth with our full Sony A7 Review.
How does it shoot? Sony A7 in the real world.
See real-world photos taken with the A7.
Compare Sony A7 image quality against competitors.
What’s the bottom line? Read our Sony A7 conclusion.

4/3 226.2mm²
20.4 megapixels
ISO 200 - 25,600

Go in depth with our full Olympus E-M1 II Review.
How does it shoot? Olympus E-M1 II in the real world.
See real-world photos taken with the E-M1 II.
Compare Olympus E-M1 II image quality against competitors.
What’s the bottom line? Read our Olympus E-M1 II conclusion.

Succeeded by the Sony A7 II
Compare A7 vs A7 II

Succeeded by the Olympus E-M1 Mark III
Compare E-M1 II vs E-M1 Mark III

Compare SONY A7 II vs OLYMPUS E-M1 MARK III

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Differences

Sony A7 advantages over Olympus E-M1 II

Larger sensor
35mm vs 4/3
More sensor area. Bigger is (generally) better.
Bigger pixels
~ 5.97 vs 3.36 microns
Better low-light and dynamic range (all else equal)
In-camera panoramas
Yes vs No
Stitches multiple shots into a panoramic photo
NFC
Yes vs No
Simplifies pairing your camera with supported phones
Higher effective ISO

Higher effective ISO

Maximum effective ISO is an estimate of the highest sensitivity at which a camera can capture excellent quality photos.

Cameras with higher effective ISO will be better choices for indoor photography, night shooting, and indoor sports photography, especially if you intend to make large prints.

You can learn more at our glossary entry.

Maximum effective ISO test data courtesy of DxO Mark.
A7 test data on DxO Mark E-M1 II test data on DxO Mark

2,248 vs 1,312 iso
Take photos in low light with less noise
More dynamic range

More dynamic range

Cameras with more dynamic range allow you to take photos with dramatic differences in highlight and shadow areas while retaining detail in both.

Think of a brilliant sunset on a rocky beach: Bright sunset in the background, with dark rocks in the foreground. High dynamic range means more of the extremes will be faithfully reproduced.

Dynamic range test data courtesy of DxO Mark.
A7 test data on DxO Mark E-M1 II test data on DxO Mark

14.2 vs 12.8 evs
Retain detail in highlight and shadows
Thinner
48 mm vs 68 mm
Thinner
More pixels
24.3 vs 20.4 megapixels
Higher resolution photos
Has anti-aliasing filter
Filter vs No Filter
Reduces unsightly moiré in photos
Higher extended ISO
51200 vs 25600 ISO
Higher extended ISO can give more low-light flexibility

Olympus E-M1 II advantages over Sony A7

Lens selection
Excellent vs Good
Better lens selection gives you more options
Tilt-swivel screen
Tilt-swivel vs tilt-only
Tilt and swivel the screen for maximum shooting flexibility
In-Camera Image Stabilization
Yes vs No
Reduces the effects of camera shake at slower shutter speeds
Shoot 4K video
4K (DCI) vs 1080p
Make sure you have a fast computer
Touchscreen
Touch vs No touch
Interact with your camera just like your smartphone
High resolution composite
Yes vs No
Combine multiple shots to form a super hi-res version
Fast startup
~0.80 vs 2.1 sec
Faster startup lets you catch the moment
Longer stills battery life
More info

Longer stills battery life

Cameras with longer battery life can take more photos before exhausting their batteries.

Special note: The measurement standard for battery life stipulates that if a camera has an internal flash, it must be used for 50% of photos taken. For this reason, comparisons of one camera with an internal flash to another without will not be comparable

440 vs 340 shots
Capture more photos
Less shutter lag
0.11 vs 0.23 sec
Focus and take a photo quickly (wide angle)
Dual card slots
Yes vs No
Gives you more storage flexibility
Lacks anti-aliasing filter
No Filter vs Filter
Enjoy sharper photos
Longer exposure
60 vs 30 sec
Long exposures for night shots
Faster JPEG shooting
60.6 fps vs 5.0 fps
Faster JPEG shooting (burst mode)
Faster RAW shooting
60.6 fps vs 5.0 fps
Faster RAW shooting in burst mode
Bigger RAW buffer
51 vs 28 shots
Larger buffer for RAW shots (burst mode)
Faster shutter
1/32000 vs 1/8000 sec
Shoot wide open in bright light

Similarities

Common Strengths

Focus peaking
Both provide
Your camera will highlight what's in focus
Eye-level viewfinder
Both provide
You'll be able to frame photos even when the sun is out
Built-in Wi-Fi
Both provide
Share your photos wirelessly
On-sensor phase detect
Both provide
Usually improves live view and video AF performance
External Mic Jack
Both provide
Improved sound fidelity when shooting video
HDMI out
Both provide
Use HDMI output to monitor or review video
Hot shoe
Both provide
Off-camera flashes open new possibilities
Headphone jack
Both provide
Monitor audio recording while you shoot video
Bulb shutter
Both provide
Hold the shutter open manually for long exposures

Common Weaknesses

Built-in Bluetooth
Neither provide
Always-on wireless connectivity
Built-in GPS
Neither provide
Geotag your photos
Internal flash
Neither provide
Useful in a pinch for fill flash
Top deck display
Neither provide
Check settings with a screen on top of the camera
Slow-motion videos
Neither provide
Shoot slow-motion videos

User reviews

Amazon
Adorama
Read A7 User Reviews

Amazon
Adorama
Read E-M1 II User Reviews

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Review Excerpt

Incredibly small body for a fully-featured, full-frame camera; Very high resolution; Hybrid autofocus is reasonably fast and confident; Significantly better burst-shooting performance than A7R; Excellent image quality even at very high sensitivities; Faster x-sync than A7R; Accepts existing Alpha-mount and E-mount lenses, and can optionally crop to APS-C image circle.
Grass-is-greener syndrome when compared to its higher-res sibling; Moderate performance; Loud shutter (but electronic first-curtain helps); Mediocre battery life when using electronic viewfinder; Weak low-light autofocus considering its price; Limited selection of native Sony FE lenses.
Read our Sony A7 Review

Excellent image quality; Very good dynamic range & high ISO performance; Fantastic C-AF performance; Incredible burst rates, even with RAW; 4K UHD & Cinema 4K (DCI) video; Clean HDMI; Dual SD card slots.
Expensive; Menus still confusing; UHS-II support only on one card slot; No optical low-pass filter means greater risk of moire; No built-in flash.
Read our Olympus E-M1 II Review

The Competition

Compared to Sony A7R

Sony A7

Sony A7R

$748
35mm

Less expensive
Bigger pixels

$1399
35mm

Higher effective ISO
More pixels

Compare Sony A7 vs Sony A7R

Olympus E-M1 II

Sony A7R

$899
4/3

Lens selection
Tilt-swivel screen

$1399
35mm

Larger sensor
Bigger pixels

Compare Olympus E-M1 II vs Sony A7R

Compared to Fujifilm X-T2

Sony A7

Fujifilm X-T2

$748
35mm

Less expensive
Larger sensor

$999
APS-C

Shoot 4K video
Fast startup

Compare Sony A7 vs Fujifilm X-T2

Olympus E-M1 II

Fujifilm X-T2

$899
4/3

Lens selection
Less expensive

$999
APS-C

Larger sensor
Bigger pixels

Compare Olympus E-M1 II vs Fujifilm X-T2

Compared to Sony A7 II

Sony A7

Sony A7 II

$748
35mm

Less expensive

$1077
35mm

In-Camera Image Stabilization

Compare Sony A7 vs Sony A7 II

Olympus E-M1 II

Sony A7 II

$899
4/3

Lens selection
Less expensive

$1077
35mm

Larger sensor
Bigger pixels

Compare Olympus E-M1 II vs Sony A7 II

Compared to Panasonic G7

Sony A7

Panasonic G7

$748
35mm

Larger sensor
Bigger pixels

$498
4/3

Lens selection
Less expensive

Compare Sony A7 vs Panasonic G7

Olympus E-M1 II

Panasonic G7

$899
4/3

In-Camera Image Stabilization
High resolution composite

$498
4/3

Less expensive
In-camera panoramas

Compare Olympus E-M1 II vs Panasonic G7

Compared to Panasonic GX8

Sony A7

Panasonic GX8

$748
35mm

Less expensive
Larger sensor

$998
4/3

Tilt-swivel screen
Lens selection

Compare Sony A7 vs Panasonic GX8

Olympus E-M1 II

Panasonic GX8

$899
4/3

High resolution composite
Fast startup

$998
4/3

In-camera panoramas
NFC

Compare Olympus E-M1 II vs Panasonic GX8

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