• APS-C 355.7mm2
  • 14.2 megapixels
  • ISO 100 - 3200
  • 1/2.3 inch 28.1mm2
  • 16.0 megapixels
  • 25.00mm - 100.00mm (35mm eq.)

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Differences

Nikon D3100 advantages over Olympus TG-4

  • 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
    ~ 5.01 vs 1.34 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.40 vs 1.0 sec
    Faster startup lets you catch the moment
  • Longer stills battery life
    More info 550 vs 380 shots
    Capture more photos
  • 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
  • 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
    12800 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Olympus TG-4 advantages over Nikon D3100

  • 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
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • Thinner
    31 mm vs 74 mm
    Thinner
  • Newer
    10 years vs 14 years old
    Newer cameras often support more advanced features
  • More dots on screen
    461k vs 230k dots
    Can mean greater resolution or a brighter screen
  • Faster JPEG shooting
    5.1 fps vs 2.9 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
  • 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.
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video

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
  • 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
  • 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
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • Dual card slots
    Neither provide
    Gives you more storage flexibility
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video

User reviews

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Buy the Nikon D3100

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Buy the Olympus TG-4
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  • Olympus TG-4 (Black)
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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 Sony DSLR-A380

Nikon D3100
Sony DSLR-A380
  • $700
  • APS-C
  • Lens selection
  • Less expensive
  • $849
  • APS-C
  • In-Camera Image Stabilization
  • Tiltable Screen

Compare Nikon D3100 vs Sony DSLR-A380

Olympus TG-4
Sony DSLR-A380
  • $452
  • 1/2.3 inch
  • Waterproof
  • In-camera panoramas
  • $849
  • APS-C
  • Larger sensor
  • Eye-level viewfinder

Compare Olympus TG-4 vs Sony DSLR-A380

Compared to Sony A33

Nikon D3100
Sony A33
  • $700
  • APS-C
  • Lens selection
  • Fast startup
  • $540
  • APS-C
  • In-Camera Image Stabilization
  • In-camera panoramas

Compare Nikon D3100 vs Sony A33

Olympus TG-4
Sony A33
  • $452
  • 1/2.3 inch
  • Waterproof
  • Built-in Wi-Fi
  • $540
  • APS-C
  • Larger sensor
  • Eye-level viewfinder

Compare Olympus TG-4 vs Sony A33

Compared to Pentax K-r

Nikon D3100
Pentax K-r
  • $700
  • APS-C
  • Less expensive
  • Higher effective ISO
  • $850
  • APS-C
  • In-Camera Image Stabilization
  • Fast startup

Compare Nikon D3100 vs Pentax K-r

Olympus TG-4
Pentax K-r
  • $452
  • 1/2.3 inch
  • Waterproof
  • In-camera panoramas
  • $850
  • APS-C
  • Larger sensor
  • Eye-level viewfinder

Compare Olympus TG-4 vs Pentax K-r

Compared to Olympus TG-3

Nikon D3100
Olympus TG-3
  • $700
  • APS-C
  • Larger sensor
  • Eye-level viewfinder
  • $349
  • 1/2.3 inch
  • Less expensive
  • Waterproof

Compare Nikon D3100 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

Nikon D3100
Ricoh WG-5 GPS
  • $700
  • APS-C
  • Larger sensor
  • Eye-level viewfinder
  • $297
  • 1/2.3 inch
  • Less expensive
  • Waterproof

Compare Nikon D3100 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?