• 35mm 855.6mm2
  • 24.3 megapixels
  • ISO 100 - 25,600
  • 1/2.3 inch 28.1mm2
  • 16.0 megapixels
  • 25.00mm - 100.00mm (35mm eq.)

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Differences

Sony A99 advantages over Olympus TG-4

  • 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
    35mm 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
  • Bigger pixels
    ~ 5.97 vs 1.34 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.70 vs 1.0 sec
    Faster startup lets you catch the moment
  • Longer stills battery life
    More info 500 vs 380 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
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Higher-res screen
    307k vs 154k pixels
    More detail on the screen lets you judge focus and composition
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Less shutter lag
    0.13 vs 0.26 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    24.3 vs 16.0 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • 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 JPEG shooting
    5.9 fps vs 5.1 fps
    Faster JPEG shooting (burst mode)
  • Faster shutter
    1/8000 vs 1/2000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    51200 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Olympus TG-4 advantages over Sony A99

  • Waterproof
    Yes vs No
    Take photos underwater without destroying your camera!
  • 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
  • Thinner
    31 mm vs 78 mm
    Thinner
  • Lighter weight
    247g vs 828g
    Lighter weight
  • Bigger JPEG buffer
    100 vs 17 shots
    Take more JPEG shots before waiting (burst mode)
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • 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
  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Built-in GPS
    Both provide
    Geotag your photos
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video

Common Weaknesses

  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • 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

User reviews

Buy From

Your purchases support this site

Buy the Olympus TG-4

Review Excerpt

  • Rugged and waterproof camera body; RAW image capture; fast f/2.0 maximum aperture; fun shooting modes; fast AF speeds for its class.

  • Heavy noise reduction, even at base ISO; no continuous RAW image capture; underwhelming video performance.

The Competition

Compared to Nikon D800

Sony A99
Nikon D800
  • $1998
  • 35mm
  • Tilt-swivel screen
  • Focus peaking
  • $1850
  • 35mm
  • Lens selection
  • Fast startup
Olympus TG-4
Nikon D800
  • $379
  • 1/2.3 inch
  • Waterproof
  • In-Camera Image Stabilization
  • $1850
  • 35mm
  • Larger sensor
  • Eye-level viewfinder

Compared to Canon 5D Mark III

Sony A99
Canon 5D Mark III
  • $1998
  • 35mm
  • Focus peaking
  • Tilt-swivel screen
  • $2079
  • 35mm
  • Lens selection
  • Fast startup
Olympus TG-4
Canon 5D Mark III
  • $379
  • 1/2.3 inch
  • Less expensive
  • Waterproof
  • $2079
  • 35mm
  • Larger sensor
  • Eye-level viewfinder

Compared to Nikon D800E

Sony A99
Nikon D800E
  • $1998
  • 35mm
  • Less expensive
  • Tilt-swivel screen
  • $2212
  • 35mm
  • Lens selection
  • Fast startup
Olympus TG-4
Nikon D800E
  • $379
  • 1/2.3 inch
  • Waterproof
  • In-Camera Image Stabilization
  • $2212
  • 35mm
  • Larger sensor
  • Eye-level viewfinder

Compared to Olympus TG-3

Sony A99
Olympus TG-3
  • $1998
  • 35mm
  • Tilt-swivel screen
  • Focus peaking
  • $349
  • 1/2.3 inch
  • Less expensive
  • Waterproof
Olympus TG-4
Olympus TG-3
  • $379
  • 1/2.3 inch
  • RAW file ability
  • Manual focus
  • $349
  • 1/2.3 inch

Compared to Ricoh WG-5 GPS

Sony A99
Ricoh WG-5 GPS
  • $1998
  • 35mm
  • Tilt-swivel screen
  • Focus peaking
  • $297
  • 1/2.3 inch
  • Less expensive
  • Waterproof
Olympus TG-4
Ricoh WG-5 GPS
  • $379
  • 1/2.3 inch
  • Slower slow-motion
  • RAW file ability
  • $297
  • 1/2.3 inch
  • Shoots 60p video
  • Faster shutter
Compare Other Cameras?