• APS-C 369.7mm2
  • 16.1 megapixels
  • ISO 100 - 16,000
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 25,600

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Differences

Sony A37 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.
  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • Bigger pixels
    ~ 4.82 vs 3.75 microns
    Better low-light and dynamic range (all else equal)
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Longer stills battery life
    More info 450 vs 360 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Less shutter lag
    0.11 vs 0.20 sec
    Focus and take a photo quickly (wide angle)

Olympus E-PM2 advantages over Sony A37

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Less expensive
    $500 vs $600 (MSRP)
    Save money for lenses or accessories
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Higher effective ISO
    932 vs 799 iso
    Take photos in low light with less noise
  • Thinner
    33 mm vs 84 mm
    Thinner
  • Higher max flash sync
    1/250 vs 1/160 sec
    Reduce the effect of ambient light in flash shots
  • Lighter weight
    384g vs 726g
    Lighter weight
  • Higher-res screen
    154k vs 77k pixels
    More detail on the screen lets you judge focus and composition
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Faster JPEG shooting
    7.9 fps vs 5.5 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    16 vs 10 shots
    Take more JPEG shots before waiting (burst mode)

Similarities

Common Strengths

  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • 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

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Buy the Olympus E-PM2

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).

The Competition

Compared to Sony A35

Sony A37
Sony A35
  • $600
  • APS-C
  • Less expensive
  • Focus peaking
  • $567
  • APS-C
  • More dots on screen
Olympus E-PM2
Sony A35
  • $1599
  • 4/3
  • Lens selection
  • Less expensive
  • $567
  • APS-C
  • Larger sensor
  • Eye-level viewfinder

Compared to Panasonic GF3

Sony A37
Panasonic GF3
  • $600
  • APS-C
  • Focus peaking
  • Larger sensor
  • $675
  • 4/3
  • Lens selection
  • Touchscreen
Olympus E-PM2
Panasonic GF3
  • $1599
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
  • $675
  • 4/3
  • Bigger pixels
  • Internal flash

Compared to Sony A57

Sony A37
Sony A57
  • $600
  • APS-C
  • Less expensive
  • External Mic Jack
  • $800
  • APS-C
  • Longer stills battery life
  • Higher-res screen
Olympus E-PM2
Sony A57
  • $1599
  • 4/3
  • Lens selection
  • Less expensive
  • $800
  • APS-C
  • Focus peaking
  • Larger sensor

Compared to Pentax K-5 IIs

Sony A37
Pentax K-5 IIs
  • $600
  • APS-C
  • Less expensive
  • Focus peaking
  • $497
  • APS-C
  • Lens selection
  • Fast startup
Olympus E-PM2
Pentax K-5 IIs
  • $1599
  • 4/3
  • Less expensive
  • Touchscreen
  • $497
  • APS-C
  • Larger sensor
  • Eye-level viewfinder

Compared to Panasonic GM5

Sony A37
Panasonic GM5
  • $600
  • APS-C
  • Less expensive
  • Larger sensor
  • $898
  • 4/3
  • Lens selection
  • Touchscreen
Olympus E-PM2
Panasonic GM5
  • $1599
  • 4/3
  • Less expensive
  • In-Camera Image Stabilization
  • $898
  • 4/3
  • Focus peaking
  • Eye-level viewfinder
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