Sony A5100 vs Olympus E-M5 II

Cameras
Compare Cameras
Sony A5100 vs Olympus E-M5 II

Leave Feedback

APS-C 366.6mm²
24.3 megapixels
ISO 100 - 25,600

Go in depth with our full Sony A5100 Review.
How does it shoot? Sony A5100 in the real world.
See real-world photos taken with the A5100.
Compare Sony A5100 image quality against competitors.
What’s the bottom line? Read our Sony A5100 conclusion.

4/3 224.9mm²
16.1 megapixels
ISO 200 - 25,600

Go in depth with our full Olympus E-M5 II Review.
How does it shoot? Olympus E-M5 II in the real world.
See real-world photos taken with the E-M5 II.
Compare Olympus E-M5 II image quality against competitors.
What’s the bottom line? Read our Olympus E-M5 II conclusion.

Buy From

Differences

Sony A5100 advantages over Olympus E-M5 II

Less expensive
$448 vs $899*
Save money for lenses or accessories
Larger sensor
APS-C vs 4/3
More sensor area. Bigger is (generally) better.
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.
A5100 test data on DxO Mark E-M5 II test data on DxO Mark

1,347 vs 908 iso
Take photos in low light with less noise
On-sensor phase detect
Yes vs No
Usually improves live view and video AF performance
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

400 vs 310 shots
Capture more photos
Internal flash
Internal flash vs None
Useful in a pinch for fill flash
More pixels
24.3 vs 16.1 megapixels
Higher resolution photos
Has anti-aliasing filter
Filter vs No Filter
Reduces unsightly moiré in photos
Bigger JPEG buffer
67 vs 18 shots
Take more JPEG shots before waiting (burst mode)
Bigger RAW buffer
25 vs 13 shots
Larger buffer for RAW shots (burst mode)

Olympus E-M5 II advantages over Sony A5100

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
Eye-level viewfinder
Eye-level vs Rear display only
You'll be able to frame photos even when the sun is out
In-Camera Image Stabilization
Yes vs No
Reduces the effects of camera shake at slower shutter speeds
High resolution composite
Yes vs No
Combine multiple shots to form a super hi-res version
Fast startup
~0.80 vs 2.0 sec
Faster startup lets you catch the moment
External Mic Jack
Jack vs No jack
Improved sound fidelity when shooting video
Higher max flash sync
1/250 vs 1/160 sec
Reduce the effect of ambient light in flash shots
Higher-res screen
346k vs 230k pixels
More detail on the screen lets you judge focus and composition
Hot shoe
Hot shoe vs None
Off-camera flashes open new possibilities
Less shutter lag
0.14 vs 0.23 sec
Focus and take a photo quickly (wide angle)
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
10.4 fps vs 6.0 fps
Faster JPEG shooting (burst mode)
Faster RAW shooting
10.4 fps vs 6.0 fps
Faster RAW shooting in burst mode
Faster shutter
1/16000 vs 1/4000 sec
Shoot wide open in bright light

Similarities

Common Strengths

Focus peaking
Both provide
Your camera will highlight what's in focus
Touchscreen
Both provide
Interact with your camera just like your smartphone
Built-in Wi-Fi
Both provide
Share your photos wirelessly
HDMI out
Both provide
Use HDMI output to monitor or review 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
Top deck display
Neither provide
Check settings with a screen on top of the camera
Dual card slots
Neither provide
Gives you more storage flexibility
Headphone jack
Neither provide
Monitor audio recording while you shoot video
Slow-motion videos
Neither provide
Shoot slow-motion videos

User reviews

Amazon
Adorama
Read A5100 User Reviews

Amazon
Adorama
Read E-M5 II User Reviews

Buy From

Your purchases support this site

Buy the Sony A5100

Body Only (Black)

Body Only (Black)
Kit with 16-50mm Lens (Black)
Kit with 16-50mm Lens (White)

All A5100 Deals

Your purchases support this site

Buy the Olympus E-M5 II

Body Only (Silver)

Body Only (Silver)
Body Only (Black)

All E-M5 II Deals

Review Excerpt

Very small and comfortable form factor; Very good image quality for its class; New dual video record function; Quick autofocus and good dynamic range.
Lacks an EVF and external mode dial; No hot shoe; JPEG processing at higher ISOs not as good as some competing mid-level models.
Read our Sony A5100 Review

Excellent handling in a compact, weather-sealed body; Crisp, roomy electronic viewfinder; Image quality that can take the fight to APS-C DSLRs; Unique high-res mode lets it bat far above its weight for static scenes; Extremely fast 10 fps burst shooting, Excellent video feature set
Control dials are easily bumped; Below-average battery life at default settings; Buffer depths for raw shooters are a bit limited; 16-megapixel sensor resolution feels dated; Weak bundled flash strobe
Read our Olympus E-M5 II Review

The Competition

Compared to Samsung NX1000

Sony A5100

Samsung NX1000

$348
APS-C

Lens selection
Focus peaking

$414
APS-C

Higher-res screen
Hot shoe

Compare Sony A5100 vs Samsung NX1000

Olympus E-M5 II

Samsung NX1000

$899
4/3

Lens selection
Focus peaking

$414
APS-C

Less expensive
Larger sensor

Compare Olympus E-M5 II vs Samsung NX1000

Compared to Samsung NX1100

Sony A5100

Samsung NX1100

$348
APS-C

Lens selection
Focus peaking

$450
APS-C

Higher-res screen
Hot shoe

Compare Sony A5100 vs Samsung NX1100

Olympus E-M5 II

Samsung NX1100

$899
4/3

Lens selection
Focus peaking

$450
APS-C

Larger sensor
More pixels

Compare Olympus E-M5 II vs Samsung NX1100

Compared to Panasonic GX7

Sony A5100

Panasonic GX7

$348
APS-C

Larger sensor
Higher effective ISO

$648
4/3

Lens selection
Eye-level viewfinder

Compare Sony A5100 vs Panasonic GX7

Olympus E-M5 II

Panasonic GX7

$899
4/3

Tilt-swivel screen
High resolution composite

$648
4/3

In-camera panoramas
Internal flash

Compare Olympus E-M5 II vs Panasonic GX7

Compared to Sony A5000

Sony A5100

Sony A5000

$348
APS-C

Touchscreen
Higher effective ISO

$298
APS-C

Less expensive

Compare Sony A5100 vs Sony A5000

Olympus E-M5 II

Sony A5000

$899
4/3

Lens selection
Tilt-swivel screen

$298
APS-C

Less expensive
Larger sensor

Compare Olympus E-M5 II vs Sony A5000

Compared to Panasonic GX85

Sony A5100

Panasonic GX85

$348
APS-C

Larger sensor
Less expensive

$598
4/3

Lens selection
Eye-level viewfinder

Compare Sony A5100 vs Panasonic GX85

Olympus E-M5 II

Panasonic GX85

$899
4/3

Tilt-swivel screen
High resolution composite

$598
4/3

Less expensive
Shoot 4K video

Compare Olympus E-M5 II vs Panasonic GX85

Compare Other Cameras?