• 35mm 855.6mm2
  • 24.3 megapixels
  • ISO 100 - 25,600
  • 4/3 224.9mm2
  • 16.1 megapixels
  • ISO 200 - 12,800

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Differences

Sony A99 advantages over Panasonic GH3

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • Larger sensor
    35mm vs 4/3
    More sensor area. Bigger is (generally) better.
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 5.97 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
  • Better color depth
    25.0 vs 22.7 bits
    Capture richer, more accurate colors
  • Higher effective ISO
    1,555 vs 812 iso
    Take photos in low light with less noise
  • More dynamic range
    13.9 vs 12.3 evs
    Retain detail in highlight and shadows
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Higher max flash sync
    1/250 vs 1/160 sec
    Reduce the effect of ambient light in flash shots
  • Higher-res screen
    307k vs 205k pixels
    More detail on the screen lets you judge focus and composition
  • Less shutter lag
    0.13 vs 0.21 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    24.3 vs 16.1 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Faster RAW shooting
    5.9 fps vs 5.1 fps
    Faster RAW shooting in burst mode
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Panasonic GH3 advantages over Sony A99

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Less expensive
    $698 vs $1998
    Save money for lenses or accessories
  • 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
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Lighter weight
    555g vs 828g
    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)

Similarities

Common Strengths

  • Tilt-swivel screen
    Both provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Headphone jack
    Both provide
    Monitor audio recording while you shoot video
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • 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
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Review Excerpt

  • Professional quality video in a compact body; Still image quality ranks with the best mirrorless models and even some prosumer DSLRs; Fast autofocus; Rugged, weatherized camera build; Reasonably priced for its advanced feature set; Large selection of high quality lenses.

  • Not as compact as most mirrorless cameras; Live View not available during high speed bursts; High ISO image quality and dynamic range not quite as good as top APS-C cameras.

The Competition

Compared to Nikon D800

Sony A99
Nikon D800
  • $1998
  • 35mm
  • Tilt-swivel screen
  • Focus peaking
  • $1850
  • 35mm
  • Lens selection
  • Fast startup
Panasonic GH3
Nikon D800
  • $763
  • 4/3
  • Tilt-swivel screen
  • Touchscreen
  • $1850
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Canon 5D Mark III

Sony A99
Canon 5D Mark III
  • $1998
  • 35mm
  • Less expensive
  • Tilt-swivel screen
  • $2692
  • 35mm
  • Lens selection
  • Fast startup
Panasonic GH3
Canon 5D Mark III
  • $763
  • 4/3
  • Less expensive
  • Tilt-swivel screen
  • $2692
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Nikon D800E

Sony A99
Nikon D800E
  • $1998
  • 35mm
  • Focus peaking
  • Tilt-swivel screen
  • $2212
  • 35mm
  • Lens selection
  • Fast startup
Panasonic GH3
Nikon D800E
  • $763
  • 4/3
  • Tilt-swivel screen
  • Touchscreen
  • $2212
  • 35mm
  • Larger sensor
  • Bigger pixels

Compared to Olympus E-M1

Sony A99
Olympus E-M1
  • $1998
  • 35mm
  • Larger sensor
  • Tilt-swivel screen
  • $1099
  • 4/3
  • Lens selection
  • Less expensive
Panasonic GH3
Olympus E-M1
  • $763
  • 4/3
  • Less expensive
  • Tilt-swivel screen
  • $1099
  • 4/3
  • Focus peaking
  • In-Camera Image Stabilization

Compared to Panasonic GH4

Sony A99
Panasonic GH4
  • $1998
  • 35mm
  • Larger sensor
  • In-Camera Image Stabilization
  • $698
  • 4/3
  • Lens selection
  • Less expensive
Panasonic GH3
Panasonic GH4
  • $763
  • 4/3
  • $698
  • 4/3
  • Focus peaking
  • Shoot 4K video
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