• 4/3 224.9mm2
  • 16.0 megapixels
  •  
  • APS-C 369.7mm2
  • 24.3 megapixels
  • ISO 100 - 16,000

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Differences

Panasonic G3 advantages over Sony A77

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Thinner
    46 mm vs 80 mm
    Thinner
  • Lighter weight
    583g vs 1363g
    Lighter weight
  • Longer exposure
    60 vs 30 sec
    Long exposures for night shots

Sony A77 advantages over Panasonic G3

  • 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.
  • Tilt-swivel screen
    Tilt-swivel vs tilt-only
    Tilt and swivel the screen for maximum shooting flexibility
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • In-camera panoramas
    Yes vs No
    Stitches multiple shots into a panoramic photo
  • Fast startup
    ~0.80 vs 1.4 sec
    Faster startup lets you catch the moment
  • Better color depth
    24.0 vs 21.0 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    801 vs 667 iso
    Take photos in low light with less noise
  • More dynamic range
    13.2 vs 10.6 evs
    Retain detail in highlight and shadows
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Longer stills battery life
    More info 530 vs 270 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
  • Higher max flash sync
    1/250 vs 1/160 sec
    Reduce the effect of ambient light in flash shots
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • More dots on screen
    922k vs 460k dots
    Can mean greater resolution or a brighter screen
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • Less shutter lag
    0.12 vs 0.29 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    24.3 vs 16.0 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 3.4 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    17 vs 7 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    16000 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • 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

  • 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
  • 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

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 Olympus E-M5

Panasonic G3
Olympus E-M5
  • $700
  • 4/3
  • Internal flash
  • More viewfinder magnification
  • $900
  • 4/3
  • In-Camera Image Stabilization
  • Higher effective ISO
Sony A77
Olympus E-M5
  • $1899
  • APS-C
  • Focus peaking
  • Larger sensor
  • $900
  • 4/3
  • Lens selection
  • Less expensive

Compared to Canon 70D

Panasonic G3
Canon 70D
  • $700
  • 4/3
  • Thinner
  • Lighter weight
  • $1149
  • APS-C
  • Tilt-swivel screen
  • Larger sensor
Sony A77
Canon 70D
  • $1899
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $1149
  • APS-C
  • Lens selection
  • Less expensive

Compared to Panasonic GX7

Panasonic G3
Panasonic GX7
  • $700
  • 4/3
  • Less expensive
  • $648
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
Sony A77
Panasonic GX7
  • $1899
  • APS-C
  • Larger sensor
  • Tilt-swivel screen
  • $648
  • 4/3
  • Lens selection
  • Touchscreen

Compared to Olympus E-M10

Panasonic G3
Olympus E-M10
  • $700
  • 4/3
  • More viewfinder magnification
  • Shoots 60p video
  • $399
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization
Sony A77
Olympus E-M10
  • $1899
  • APS-C
  • Larger sensor
  • Tilt-swivel screen
  • $399
  • 4/3
  • Lens selection
  • Touchscreen

Compared to Sony A77 II

Panasonic G3
Sony A77 II
  • $700
  • 4/3
  • Lens selection
  • Touchscreen
  • $1198
  • APS-C
  • Tilt-swivel screen
  • Focus peaking
Sony A77
Sony A77 II
  • $1899
  • APS-C
  • Built-in GPS
  • $1198
  • APS-C
  • Built-in Wi-Fi
  • NFC
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