• APS-C 369.7mm2
  • 24.3 megapixels
  • ISO 100 - 16,000
  • 1/2.3 inch 28.1mm2
  • 20.1 megapixels
  • 26.00mm - 130.00mm (35mm eq.)

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Differences

Sony A77 advantages over Nikon S2900

  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    APS-C vs 1/2.3 inch
    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
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 3.95 vs 1.20 microns
    Better low-light and dynamic range (all else equal)
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • RAW file ability
    Yes vs No
    Gives you more flexibility to develop your photos later
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Longer stills battery life
    More info 530 vs 250 shots
    Capture more photos
  • Manual focus
    Yes vs No
    AF is for the weak. Real photographers focus manually.
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • More dots on screen
    922k vs 230k dots
    Can mean greater resolution or a brighter screen
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    24.3 vs 20.1 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Longer exposure
    30 vs 4 sec
    Long exposures for night shots
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Faster shutter
    1/8000 vs 1/1500 sec
    Shoot wide open in bright light
  • Higher extended ISO
    16000 vs 3200 ISO
    Higher extended ISO can give more low-light flexibility

Nikon S2900 advantages over Sony A77

  • Less expensive
    $130 vs $2000 (MSRP)
    Save money for lenses or accessories
  • Thinner
    19 mm vs 80 mm
    Thinner

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • Internal flash
    Both provide
    Useful in a pinch for fill flash

Common Weaknesses

  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • 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
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Integrated ND filter
    Neither provide
    Shoot in daylight with a large aperture or slow shutter
  • 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 Sony A77

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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.

The Competition

Compared to Canon 7D

Sony A77
Canon 7D
  • $1899
  • APS-C
  • Tilt-swivel screen
  • Focus peaking
  • $1499
  • APS-C
  • Lens selection
  • Fast startup
Nikon S2900
Canon 7D
  • $130
  • 1/2.3 inch
  • Thinner
  • Newer
  • $1499
  • APS-C
  • Larger sensor
  • Eye-level viewfinder

Compared to Sony W710

Sony A77
Sony W710
  • $1899
  • APS-C
  • Tilt-swivel screen
  • Larger sensor
  • $99
  • 1/2.3 inch
  • Less expensive
  • Thinner
Nikon S2900
Sony W710
  • $130
  • 1/2.3 inch
  • More pixels
  • Longer exposure
  • $99
  • 1/2.3 inch
  • Less expensive
  • Focus peaking

Compared to Panasonic F5

Sony A77
Panasonic F5
  • $1899
  • APS-C
  • Focus peaking
  • Larger sensor
  • $100
  • 1/2.33 inch
  • Thinner
Nikon S2900
Panasonic F5
  • $130
  • 1/2.3 inch
  • More pixels
  • $100
  • 1/2.33 inch
  • Bigger pixels
  • Longer exposure

Compared to Canon 70D

Sony A77
Canon 70D
  • $1899
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $999
  • APS-C
  • Lens selection
  • Touchscreen
Nikon S2900
Canon 70D
  • $130
  • 1/2.3 inch
  • Thinner
  • $999
  • APS-C
  • Tilt-swivel screen
  • Larger sensor

Compared to Sony A77 II

Sony A77
Sony A77 II
  • $1899
  • APS-C
  • Built-in GPS
  • $1198
  • APS-C
  • Built-in Wi-Fi
  • NFC
Nikon S2900
Sony A77 II
  • $130
  • 1/2.3 inch
  • Thinner
  • $1198
  • APS-C
  • Tilt-swivel screen
  • Focus peaking
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