• APS-C 366.6mm2
  • 24.3 megapixels
  • ISO 100 - 25,600
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600

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Differences

Sony A5100 advantages over Olympus E-M10 II

  • 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
    1,347 vs 842 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 400 vs 320 shots
    Capture more photos
  • Thinner
    35 mm vs 46 mm
    Thinner
  • More pixels
    24.3 vs 16.1 megapixels
    Higher resolution photos
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • Wider angle kit lens
    24 mm vs 28 mm
    Capture more of the scene with the included lens
  • Bigger JPEG buffer
    67 vs 28 shots
    Take more JPEG shots before waiting (burst mode)

Olympus E-M10 II advantages over Sony A5100

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • 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
  • Fast startup
    ~0.80 vs 2.0 sec
    Faster startup lets you catch the moment
  • 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
    0.16 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
    8.9 fps vs 6.0 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    8.9 fps vs 6.0 fps
    Faster RAW shooting in burst mode
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • 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
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Both provide
    Share your photos wirelessly
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • 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
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

Buy From

Your purchases support this site

Buy the Sony A5100

Your purchases support this site

Buy the Olympus E-M10 II

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.

  • Excellent value for the money; Professional-grade ergonomics; Incredibly good image quality for its class; Solid performance specs across the board; Loaded with features.

  • Kit lens may not be quite as sharp as previous kit lens from this line; Below average battery life; Somewhat confusing menu systems.

The Competition

Compared to Samsung NX1100

Sony A5100
Samsung NX1100
  • $348
  • APS-C
  • Lens selection
  • Focus peaking
  • $450
  • APS-C
  • Higher-res screen
  • Hot shoe
Olympus E-M10 II
Samsung NX1100
  • $442
  • 4/3
  • Lens selection
  • Focus peaking
  • $450
  • APS-C
  • Larger sensor
  • More pixels

Compared to Sony A5000

Sony A5100
Sony A5000
  • $348
  • APS-C
  • Touchscreen
  • Higher effective ISO
  • $398
  • APS-C
Olympus E-M10 II
Sony A5000
  • $442
  • 4/3
  • Lens selection
  • Eye-level viewfinder
  • $398
  • APS-C
  • Less expensive
  • Larger sensor

Compared to Olympus E-M10

Sony A5100
Olympus E-M10
  • $348
  • APS-C
  • Less expensive
  • Larger sensor
  • $434
  • 4/3
  • Lens selection
  • Eye-level viewfinder
Olympus E-M10 II
Olympus E-M10
  • $442
  • 4/3
  • Less expensive
  • Fast startup
  • $434
  • 4/3

Compared to Sony A6000

Sony A5100
Sony A6000
  • $348
  • APS-C
  • Touchscreen
  • $448
  • APS-C
  • Eye-level viewfinder
  • Higher-res screen
Olympus E-M10 II
Sony A6000
  • $442
  • 4/3
  • Lens selection
  • In-Camera Image Stabilization
  • $448
  • APS-C
  • Larger sensor
  • In-camera panoramas

Compared to Panasonic GX85

Sony A5100
Panasonic GX85
  • $348
  • APS-C
  • Larger sensor
  • NFC
  • $565
  • 4/3
  • Lens selection
  • Eye-level viewfinder
Olympus E-M10 II
Panasonic GX85
  • $442
  • 4/3
  • Higher effective ISO
  • More telephoto lens reach
  • $565
  • 4/3
  • Shoot 4K video
  • In-camera panoramas
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