• 0.98 inch 285.7mm2
  • 4.6 megapixels
  • 41.00mm (35mm eq.)
  • 1/2.3 inch 28.1mm2
  • 16.0 megapixels
  • 25.00mm - 100.00mm (35mm eq.)

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Differences

Sigma DP2 advantages over Olympus TG-4

  • Larger sensor
    0.98 inch vs 1/2.3 inch
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 7.84 vs 1.34 microns
    Better low-light and dynamic range (all else equal)
  • Hot shoe
    Hot shoe vs None
    Off-camera flashes open new possibilities
  • Longer exposure
    15 vs 4 sec
    Long exposures for night shots

Olympus TG-4 advantages over Sigma DP2

  • Waterproof
    Yes vs No
    Take photos underwater without destroying your camera!
  • 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
  • Larger lens aperture
    f/2.0 vs f/2.8
    Take photos in low-light or isolate your subject
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • More telephoto lens reach
    100 mm vs 41 mm
    Capture objects farther away
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Longer stills battery life
    More info 380 vs 250 shots
    Capture more photos
  • Thinner
    31 mm vs 56 mm
    Thinner
  • Newer
    10 years vs 16 years old
    Newer cameras often support more advanced features
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • More dots on screen
    461k vs 230k dots
    Can mean greater resolution or a brighter screen
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    16.0 vs 4.6 megapixels
    Higher resolution photos
  • Wider angle lens
    25 mm vs 41 mm
    Capture more of the scene
  • Slow-motion videos
    Yes vs No
    Shoot slow-motion videos
  • Higher extended ISO
    6400 vs 1600 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • RAW file ability
    Both provide
    Gives you more flexibility to develop your photos later
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.

Common Weaknesses

  • Focus peaking
    Neither provide
    Your camera will highlight what's in focus
  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Eye-level viewfinder
    Neither provide
    You'll be able to frame photos even when the sun is out
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • 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
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Bulb shutter
    Neither provide
    Hold the shutter open manually for long exposures

User reviews

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Buy the Sigma DP2

Your purchases support this site

Buy the Olympus TG-4
Olympus TG-4 (Black)
  • Olympus TG-4 (Black)
  • Olympus TG-4 (Red)
All TG-4 Deals

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.

  • Read our Olympus TG-4 Review

The Competition

Compared to Sigma DP1 Merrill

Sigma DP2
Sigma DP1 Merrill
  • $870
  • 0.98 inch
  • Bigger pixels
  • More telephoto lens reach
  • $849
  • APS-C
  • Larger sensor
  • More dots on screen

Compare Sigma DP2 vs Sigma DP1 Merrill

Olympus TG-4
Sigma DP1 Merrill
  • $452
  • 1/2.3 inch
  • Waterproof
  • In-Camera Image Stabilization
  • $849
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus TG-4 vs Sigma DP1 Merrill

Compared to Nikon Coolpix A

Sigma DP2
Nikon Coolpix A
  • $870
  • 0.98 inch
  • Less expensive
  • Bigger pixels
  • $1097
  • APS-C
  • Larger sensor
  • Thinner

Compare Sigma DP2 vs Nikon Coolpix A

Olympus TG-4
Nikon Coolpix A
  • $452
  • 1/2.3 inch
  • Waterproof
  • In-Camera Image Stabilization
  • $1097
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus TG-4 vs Nikon Coolpix A

Compared to Ricoh GR

Sigma DP2
Ricoh GR
  • $870
  • 0.98 inch
  • Bigger pixels
  • More telephoto lens reach
  • $799
  • APS-C
  • Larger sensor
  • Integrated ND filter

Compare Sigma DP2 vs Ricoh GR

Olympus TG-4
Ricoh GR
  • $452
  • 1/2.3 inch
  • Waterproof
  • In-Camera Image Stabilization
  • $799
  • APS-C
  • Larger sensor
  • Bigger pixels

Compare Olympus TG-4 vs Ricoh GR

Compared to Olympus TG-3

Sigma DP2
Olympus TG-3
  • $870
  • 0.98 inch
  • Larger sensor
  • Bigger pixels
  • $349
  • 1/2.3 inch
  • Less expensive
  • Waterproof

Compare Sigma DP2 vs Olympus TG-3

Olympus TG-4
Olympus TG-3
  • $452
  • 1/2.3 inch
  • RAW file ability
  • Manual focus
  • $349
  • 1/2.3 inch

Compare Olympus TG-4 vs Olympus TG-3

Compared to Ricoh WG-5 GPS

Sigma DP2
Ricoh WG-5 GPS
  • $870
  • 0.98 inch
  • Larger sensor
  • Bigger pixels
  • $297
  • 1/2.3 inch
  • Less expensive
  • Waterproof

Compare Sigma DP2 vs Ricoh WG-5 GPS

Olympus TG-4
Ricoh WG-5 GPS
  • $452
  • 1/2.3 inch
  • Slower slow-motion
  • RAW file ability
  • $297
  • 1/2.3 inch
  • Shoots 60p video
  • Faster shutter

Compare Olympus TG-4 vs Ricoh WG-5 GPS

Compare Other Cameras?