• APS-C 355.7mm2
  • 14.2 megapixels
  • ISO 100 - 3200
  • 1/2.3 inch 28.1mm2
  • 20.4 megapixels
  • 24.00mm - 1200.00mm (35mm eq.)

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Differences

Nikon D3100 advantages over Sony HX400V

  • Larger sensor
    APS-C vs 1/2.3 inch
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 5.01 vs 1.19 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 550 vs 380 shots
    Capture more photos
  • Thinner
    74 mm vs 103 mm
    Thinner
  • Bulb shutter
    Bulb vs No bulb
    Hold the shutter open manually for long exposures
  • Bigger JPEG buffer
    100 vs 10 shots
    Take more JPEG shots before waiting (burst mode)

Sony HX400V advantages over Nikon D3100

  • 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
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • NFC
    Yes vs No
    Simplifies pairing your camera with supported phones
  • Built-in GPS
    GPS vs None
    Geotag your photos
  • More dots on screen
    922k vs 230k dots
    Can mean greater resolution or a brighter screen
  • More pixels
    20.4 vs 14.2 megapixels
    Higher resolution photos
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Faster JPEG shooting
    9.9 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
  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • 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
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Focus peaking
    Neither provide
    Your camera will highlight what's in focus
  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • 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
  • 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

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
Sony HX400V
Sony DSLR-A380
  • $448
  • 1/2.3 inch
  • In-camera panoramas
  • Built-in Wi-Fi
  • $849
  • APS-C
  • Larger sensor
  • Bigger pixels

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
Sony HX400V
Sony A33
  • $448
  • 1/2.3 inch
  • Built-in Wi-Fi
  • NFC
  • $540
  • APS-C
  • Larger sensor
  • Bigger pixels

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
Sony HX400V
Pentax K-r
  • $448
  • 1/2.3 inch
  • In-camera panoramas
  • Tiltable Screen
  • $850
  • APS-C
  • Larger sensor
  • Bigger pixels

Compared to Sony HX300

Nikon D3100
Sony HX300
  • $700
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $600
  • 1/2.3 inch
  • Less expensive
  • Focus peaking
Sony HX400V
Sony HX300
  • $448
  • 1/2.3 inch
  • In-camera panoramas
  • Built-in Wi-Fi
  • $600
  • 1/2.3 inch
  • Focus peaking

Compared to Fujifilm S1

Nikon D3100
Fujifilm S1
  • $700
  • APS-C
  • Larger sensor
  • Bigger pixels
  • $349
  • 1/2.3 inch
  • Focus peaking
  • Less expensive
Sony HX400V
Fujifilm S1
  • $448
  • 1/2.3 inch
  • Built-in GPS
  • Shoots 24p video
  • $349
  • 1/2.3 inch
  • Focus peaking
  • Tilt-swivel screen
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