• APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 16,000
  • 1/2.3 inch 28.1mm2
  • 16.0 megapixels
  • 21.00mm - 105.00mm (35mm eq.)

Buy From

Differences

Sony A58 advantages over Olympus TG-870

  • 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
  • Bigger pixels
    ~ 4.31 vs 1.34 microns
    Better low-light and dynamic range (all else equal)
  • RAW file ability
    Yes vs No
    Gives you more flexibility to develop your photos later
  • Longer stills battery life
    More info 700 vs 300 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
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • More pixels
    20.1 vs 16.0 megapixels
    Higher resolution photos
  • Has anti-aliasing filter
    Filter vs No Filter
    Reduces unsightly moiré in photos
  • 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
    1/4000 vs 1/2000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    16000 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Olympus TG-870 advantages over Sony A58

  • Waterproof
    Yes vs No
    Take photos underwater without destroying your camera!
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Thinner
    27 mm vs 77 mm
    Thinner
  • More dots on screen
    920k vs 461k dots
    Can mean greater resolution or a brighter screen
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Lacks anti-aliasing filter
    No Filter vs Filter
    Enjoy sharper photos
  • Faster JPEG shooting
    7.0 fps vs 4.9 fps
    Faster JPEG shooting (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
  • Tiltable Screen
    Both provide
    Tilt the screen for shooting flexbility
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • 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
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • 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

User reviews

Buy From

Your purchases support this site

Buy the Olympus TG-870

Review Excerpt

  • Improved 20.1-megapixel resolution; Impressive image quality, especially for its price; Fast and decisive autofocus (in most conditions); Very good battery life; Good video quality (Full HD 1080p, though it doesn't support 60p frame rate).

  • Plastic lens mount; Slower burst mode speeds and shallower buffer than A57; LCD no longer fully articulating; Mediocre kit lens; Electronic instead of an optical viewfinder may be a turnoff for some.

The Competition

Compared to Pentax K-5 IIs

Sony A58
Pentax K-5 IIs
  • $598
  • APS-C
  • Less expensive
  • Focus peaking
  • $497
  • APS-C
  • Lens selection
  • Fast startup
Olympus TG-870
Pentax K-5 IIs
  • $279
  • 1/2.3 inch
  • Waterproof
  • In-camera panoramas
  • $497
  • APS-C
  • Larger sensor
  • Eye-level viewfinder

Compared to Nikon D5200

Sony A58
Nikon D5200
  • $598
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $590
  • APS-C
  • Lens selection
  • Tilt-swivel screen
Olympus TG-870
Nikon D5200
  • $279
  • 1/2.3 inch
  • Less expensive
  • Waterproof
  • $590
  • APS-C
  • Larger sensor
  • Tilt-swivel screen

Compared to Canon T5i

Sony A58
Canon T5i
  • $598
  • APS-C
  • Focus peaking
  • Larger sensor
  • $539
  • APS-C
  • Lens selection
  • Tilt-swivel screen
Olympus TG-870
Canon T5i
  • $279
  • 1/2.3 inch
  • Less expensive
  • Waterproof
  • $539
  • APS-C
  • Tilt-swivel screen
  • Larger sensor

Compared to Olympus TG-850

Sony A58
Olympus TG-850
  • $598
  • APS-C
  • Focus peaking
  • Larger sensor
  • $249
  • 1/2.3 inch
  • Less expensive
  • Waterproof
Olympus TG-870
Olympus TG-850
  • $279
  • 1/2.3 inch
  • Built-in Wi-Fi
  • Built-in GPS
  • $249
  • 1/2.3 inch

Compared to Olympus TG-860

Sony A58
Olympus TG-860
  • $598
  • APS-C
  • Focus peaking
  • Larger sensor
  • $230
  • 1/2.3 inch
  • Less expensive
  • Waterproof
Olympus TG-870
Olympus TG-860
  • $279
  • 1/2.3 inch
  • More dots on screen
  • $230
  • 1/2.3 inch
Compare Other Cameras?