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

Buy From

Differences

Olympus E-PM2 advantages over Sony A5100

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Fast startup
    ~0.70 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
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    7.9 fps vs 6.0 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    8.0 fps vs 6.0 fps
    Faster RAW shooting in burst mode

Sony A5100 advantages over Olympus E-PM2

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • 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
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Higher effective ISO
    1,347 vs 932 iso
    Take photos in low light with less noise
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Higher-res screen
    230k vs 154k pixels
    More detail on the screen lets you judge focus and composition
  • More pixels
    24.3 vs 16.1 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Wider angle kit lens
    24 mm vs 28 mm
    Capture more of the scene with the included lens
  • Bigger JPEG buffer
    67 vs 16 shots
    Take more JPEG shots before waiting (burst mode)
  • Bigger RAW buffer
    25 vs 16 shots
    Larger buffer for RAW shots (burst mode)

Similarities

Common Strengths

  • Touchscreen
    Both provide
    Interact with your camera just like your smartphone
  • 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
  • Eye-level viewfinder
    Neither provide
    You'll be able to frame photos even when the sun is out
  • 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
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Your purchases support this site

Buy the Olympus E-PM2

Your purchases support this site

Buy the Sony A5100

Review Excerpt

  • Super compact and lightweight; Excellent image and print quality that rivals much more expensive CSCs and DSLRs; Solid low-light (high ISO) performance; Touchscreen LCD responsive and useful once you get used to it; Speedy and accurate AF on still subjects; Tons of advanced shooting features and customizing options.

  • Maddening menu system; No physical Mode dial; Motion AF not quite up to par; Mediocre HD video quality; No built-in flash (but a small external flash is included).

  • 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.

The Competition

Compared to Panasonic GF2

Olympus E-PM2
Panasonic GF2
  • $1599
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
  • $617
  • 4/3
  • Bigger pixels
  • Tiltable Screen
Sony A5100
Panasonic GF2
  • $348
  • APS-C
  • Focus peaking
  • Larger sensor
  • $617
  • 4/3
  • Lens selection
  • Fast startup

Compared to Panasonic GF3

Olympus E-PM2
Panasonic GF3
  • $1599
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
  • $675
  • 4/3
  • Bigger pixels
  • Internal flash
Sony A5100
Panasonic GF3
  • $348
  • APS-C
  • Focus peaking
  • Larger sensor
  • $675
  • 4/3
  • Lens selection
  • Longer exposure

Compared to Samsung NX1100

Olympus E-PM2
Samsung NX1100
  • $1599
  • 4/3
  • Less expensive
  • Lens selection
  • $450
  • APS-C
  • Larger sensor
  • Built-in Wi-Fi
Sony A5100
Samsung NX1100
  • $348
  • APS-C
  • Lens selection
  • Focus peaking
  • $450
  • APS-C
  • Higher-res screen
  • Hot shoe

Compared to Sony A5000

Olympus E-PM2
Sony A5000
  • $1599
  • 4/3
  • Lens selection
  • In-Camera Image Stabilization
  • $298
  • APS-C
  • Focus peaking
  • Larger sensor
Sony A5100
Sony A5000
  • $348
  • APS-C
  • Touchscreen
  • Higher effective ISO
  • $298
  • APS-C
  • Less expensive

Compared to Panasonic GM5

Olympus E-PM2
Panasonic GM5
  • $1599
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
  • $898
  • 4/3
  • Focus peaking
  • Eye-level viewfinder
Sony A5100
Panasonic GM5
  • $348
  • APS-C
  • Larger sensor
  • Tiltable Screen
  • $898
  • 4/3
  • Lens selection
  • Eye-level viewfinder
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