• APS-C 355.7mm2
  • 14.2 megapixels
  • ISO 100 - 3200
  • APS-C 369.0mm2
  • 14.8 megapixels
  • 28.00mm (35mm eq.)

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Differences

Nikon D3100 advantages over Sigma DP1 Merrill

  • Eye-level viewfinder
    Eye-level vs Rear display only
    You'll be able to frame photos even when the sun is out
  • Fast startup
    ~0.40 vs 2.9 sec
    Faster startup lets you catch the moment
  • Longer stills battery life
    More info 550 vs 97 shots
    Capture more photos
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • Less shutter lag
    0.28 vs 0.49 sec
    Focus and take a photo quickly (wide angle)
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Bigger JPEG buffer
    100 vs 7 shots
    Take more JPEG shots before waiting (burst mode)
  • 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

Sigma DP1 Merrill advantages over Nikon D3100

  • More dots on screen
    922k vs 230k dots
    Can mean greater resolution or a brighter screen
  • Doesn't require an AA filter
    Yes vs No
    A unique sensor design provides sharp photos without moiré
  • Faster JPEG shooting
    3.8 fps vs 2.9 fps
    Faster JPEG shooting (burst mode)

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
  • Manual focus
    Both provide
    AF is for the weak. Real photographers focus manually.
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities

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
  • In-Camera Image Stabilization
    Neither provide
    Reduces the effects of camera shake at slower shutter speeds
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • Tiltable Screen
    Neither provide
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Built-in Bluetooth
    Neither provide
    Always-on wireless connectivity
  • Built-in GPS
    Neither provide
    Geotag your photos
  • 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
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Review Excerpt

  • Exceptionally detailed and uniquely beautiful image quality at low ISOs; Fast, sharp 28mm-equivalent lens; Simple, straightforward controls match camera's simple, straightforward (street photography) goals.

  • Fixed-focal-length lens; Image quality deteriorates significantly at ISO 800 and above; Overall sluggish performer; Falls short when capturing JPEGs; Terrible VGA-only video quality; Very poor battery life; No built-in flash.

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
Sigma DP1 Merrill
Sony DSLR-A380
  • $1125
  • APS-C
  • Lighter weight
  • More dots on screen
  • $849
  • APS-C
  • Eye-level viewfinder
  • In-Camera Image Stabilization

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
Sigma DP1 Merrill
Sony A33
  • $1125
  • APS-C
  • Thinner
  • Doesn't require an AA filter
  • $540
  • APS-C
  • Eye-level viewfinder
  • In-Camera Image Stabilization

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
Sigma DP1 Merrill
Pentax K-r
  • $1125
  • APS-C
  • More pixels
  • Doesn't require an AA filter
  • $850
  • APS-C
  • Eye-level viewfinder
  • In-Camera Image Stabilization

Compared to Leica X2

Nikon D3100
Leica X2
  • $700
  • APS-C
  • Eye-level viewfinder
  • Longer stills battery life
  • $1499
  • APS-C
  • Thinner
  • Faster JPEG shooting
Sigma DP1 Merrill
Leica X2
  • $1125
  • APS-C
  • Less expensive
  • More dots on screen
  • $1499
  • APS-C
  • More telephoto lens reach
  • Longer stills battery life

Compared to Leica X-E (Typ 102)

Nikon D3100
Leica X-E (Typ 102)
  • $700
  • APS-C
  • Less expensive
  • Eye-level viewfinder
  • $1534
  • APS-C
  • Thinner
  • Higher max flash sync
Sigma DP1 Merrill
Leica X-E (Typ 102)
  • $1125
  • APS-C
  • More dots on screen
  • Wider angle lens
  • $1534
  • APS-C
  • More telephoto lens reach
  • Internal flash
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