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

Buy From

Differences

Sony A77 advantages over Olympus E-PL9

  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • 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
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Longer stills battery life
    More info 530 vs 350 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More pixels
    24.3 vs 16.1 megapixels
    Higher resolution photos
  • Wider angle kit lens
    24 mm vs 28 mm
    Capture more of the scene with the included lens
  • Faster JPEG shooting
    11.6 fps vs 8.6 fps
    Faster JPEG shooting (burst mode)
  • Faster RAW shooting
    11.6 fps vs 8.6 fps
    Faster RAW shooting in burst mode

Olympus E-PL9 advantages over Sony A77

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Shoot 4K video
    4K (UHD) vs 1080p
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • Thinner
    39 mm vs 80 mm
    Thinner
  • Newer
    7 years vs 13 years old
    Newer cameras often support more advanced features
  • Lighter weight
    473g vs 1363g
    Lighter weight
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots
  • Bigger JPEG buffer
    Unlimited vs 17 shots
    Take more JPEG shots before waiting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Faster shutter
    1/16000 vs 1/8000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    25600 vs 16000 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Focus peaking
    Both provide
    Your camera will highlight what's in focus
  • In-Camera Image Stabilization
    Both provide
    Reduces the effects of camera shake at slower shutter speeds
  • In-camera panoramas
    Both provide
    Stitches multiple shots into a panoramic photo
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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

  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • 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 A77
Body Only
  • Body Only
  • Kit with 16-50mm Lens
  • Kit with 18-135mm Lens
All A77 Deals

Your purchases support this site

Buy the Olympus E-PL9
Body Only (Black)
  • Body Only (Black)
  • Body Only (Brown)
  • Body Only (White)
  • Kit with 14-42mm Lens (Black)
  • Kit with 14-42mm Lens (Brown)
  • Kit with 14-42mm Lens (White)
All E-PL9 Deals

Review Excerpt

  • Very fast top frame rate; full-time phase-detect autofocus; Full 60p HD video; Excellent kit lens; Very good high-resolution sensor.

  • Heavy; EVF appears dim when used in bright light; AF tracking in Movie mode was unreliable in our testing.

  • Read our Sony A77 Full Review

The Competition

Compared to Canon 7D

Sony A77
Canon 7D
  • $1899
  • APS-C
  • Tilt-swivel screen
  • Focus peaking
  • $1499
  • APS-C
  • Lens selection
  • Less expensive

Compare Sony A77 vs Canon 7D

Olympus E-PL9
Canon 7D
  • $700
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $1499
  • APS-C
  • Larger sensor
  • Eye-level viewfinder

Compare Olympus E-PL9 vs Canon 7D

Compared to Canon 70D

Sony A77
Canon 70D
  • $1899
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $999
  • APS-C
  • Lens selection
  • Less expensive

Compare Sony A77 vs Canon 70D

Olympus E-PL9
Canon 70D
  • $700
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
  • $999
  • APS-C
  • Tilt-swivel screen
  • Larger sensor

Compare Olympus E-PL9 vs Canon 70D

Compared to Sony A77 II

Sony A77
Sony A77 II
  • $1899
  • APS-C
  • Built-in GPS
  • $1198
  • APS-C
  • Built-in Wi-Fi
  • NFC

Compare Sony A77 vs Sony A77 II

Olympus E-PL9
Sony A77 II
  • $700
  • 4/3
  • Lens selection
  • Shoot 4K video
  • $1198
  • APS-C
  • Larger sensor
  • Tilt-swivel screen

Compare Olympus E-PL9 vs Sony A77 II

Compared to Panasonic GX85

Sony A77
Panasonic GX85
  • $1899
  • APS-C
  • Tilt-swivel screen
  • Larger sensor
  • $598
  • 4/3
  • Lens selection
  • Less expensive

Compare Sony A77 vs Panasonic GX85

Olympus E-PL9
Panasonic GX85
  • $700
  • 4/3
  • Built-in Bluetooth
  • Longer stills battery life
  • $598
  • 4/3
  • Eye-level viewfinder
  • Lacks anti-aliasing filter

Compare Olympus E-PL9 vs Panasonic GX85

Compared to Olympus E-PL8

Sony A77
Olympus E-PL8
  • $1899
  • APS-C
  • Tilt-swivel screen
  • Larger sensor
  • $599
  • 4/3
  • Lens selection
  • Touchscreen

Compare Sony A77 vs Olympus E-PL8

Olympus E-PL9
Olympus E-PL8
  • $700
  • 4/3
  • Shoot 4K video
  • In-camera panoramas
  • $599
  • 4/3

Compare Olympus E-PL9 vs Olympus E-PL8

Compare Other Cameras?