• 1/2.3 inch 28.1mm2
  • 12.1 megapixels
  • 25.00mm - 450.00mm (35mm eq.)
  • APS-C 366.6mm2
  • 24.2 megapixels
  • ISO 100 - 32,000

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Differences

Nikon S9100 advantages over Sony A6400

  • Slower slow-motion
    240 fps vs 120 fps
    Supports slower slow-mo
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Thinner
    34 mm vs 59 mm
    Thinner

Sony A6400 advantages over Nikon S9100

  • 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
    ~ 3.92 vs 1.54 microns
    Better low-light and dynamic range (all else equal)
  • Shoot 4K video
    4K (UHD) vs 1080p
    Make sure you have a fast computer
  • Touchscreen
    Touch vs No touch
    Interact with your camera just like your smartphone
  • Tiltable Screen
    Tiltable vs Fixed
    Tilt the screen for shooting flexbility
  • RAW file ability
    Yes vs No
    Gives you more flexibility to develop your photos later
  • Built-in Wi-Fi
    Wi-Fi vs None
    Share your photos wirelessly
  • Built-in Bluetooth
    Yes vs No
    Always-on wireless connectivity
  • On-sensor phase detect
    Yes vs No
    Usually improves live view and video AF performance
  • Longer stills battery life
    More info 410 vs 270 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
  • Newer
    6 years vs 14 years old
    Newer cameras often support more advanced features
  • 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
  • Less shutter lag
    0.12 vs 0.22 sec
    Focus and take a photo quickly (wide angle)
  • More pixels
    24.2 vs 12.1 megapixels
    Higher resolution 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 JPEG shooting
    11.0 fps vs 9.5 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    87 vs 5 shots
    Take more JPEG shots before waiting (burst mode)
  • Higher extended ISO
    102400 vs 3200 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • Rear display
    Both provide
    Review photos on the back of the camera
  • In-camera panoramas
    Both provide
    Stitches multiple shots into a panoramic photo
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Slow-motion videos
    Both provide
    Shoot slow-motion videos

Common Weaknesses

  • Tilt-swivel screen
    Neither provide
    Tilt and swivel the screen for maximum shooting flexibility
  • Built-in GPS
    Neither provide
    Geotag your photos
  • 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

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Buy the Nikon S9100

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Buy the Sony A6400
Body Only (Black)
  • Body Only (Black)
  • Kit with 16-50mm OSS lens
  • Kit with 18-135mm OSS lens
All A6400 Deals

Review Excerpt

  • Backside-illuminated sensor for good low-light performance; Very long zoom; Good printed performance; Very fast autofocus.

  • Autofocus is not always reliable; Auto white balance renders skin tones a little red; Slow digital zoom.

  • Read our Nikon S9100 Express Review

The Competition

Compared to Pentax RZ18

Nikon S9100
Pentax RZ18
  • $254
  • 1/2.3 inch
  • Bigger pixels
  • In-camera panoramas
  • $210
  • 1/2.33 inch
  • Manual focus
  • More pixels

Compare Nikon S9100 vs Pentax RZ18

Sony A6400
Pentax RZ18
  • $823
  • APS-C
  • Focus peaking
  • Larger sensor
  • $210
  • 1/2.33 inch
  • In-Camera Image Stabilization
  • Thinner

Compare Sony A6400 vs Pentax RZ18

Compared to Panasonic ZS15

Nikon S9100
Panasonic ZS15
  • $254
  • 1/2.3 inch
  • In-camera panoramas
  • More telephoto lens reach
  • $273
  • 1/2.3 inch
  • Less expensive
  • Longer exposure

Compare Nikon S9100 vs Panasonic ZS15

Sony A6400
Panasonic ZS15
  • $823
  • APS-C
  • Focus peaking
  • Larger sensor
  • $273
  • 1/2.3 inch
  • In-Camera Image Stabilization
  • Thinner

Compare Sony A6400 vs Panasonic ZS15

Compared to Canon SX280 HS

Nikon S9100
Canon SX280 HS
  • $254
  • 1/2.3 inch
  • In-camera panoramas
  • Longer stills battery life
  • $300
  • 1/2.3 inch
  • Built-in Wi-Fi
  • Built-in GPS

Compare Nikon S9100 vs Canon SX280 HS

Sony A6400
Canon SX280 HS
  • $823
  • APS-C
  • Focus peaking
  • Larger sensor
  • $300
  • 1/2.3 inch
  • In-Camera Image Stabilization
  • Built-in GPS

Compare Sony A6400 vs Canon SX280 HS

Compared to Fujifilm X-T100

Nikon S9100
Fujifilm X-T100
  • $254
  • 1/2.3 inch
  • Slower slow-motion
  • In-Camera Image Stabilization
  • $599
  • APS-C
  • Focus peaking
  • Larger sensor

Compare Nikon S9100 vs Fujifilm X-T100

Sony A6400
Fujifilm X-T100
  • $823
  • APS-C
  • Slower slow-motion
  • Fast startup
  • $599
  • APS-C
  • Less expensive
  • Tilt-swivel screen

Compare Sony A6400 vs Fujifilm X-T100

Compared to Sony A6100

Nikon S9100
Sony A6100
  • $254
  • 1/2.3 inch
  • Slower slow-motion
  • In-Camera Image Stabilization
  • $648
  • APS-C
  • Focus peaking
  • Larger sensor

Compare Nikon S9100 vs Sony A6100

Sony A6400
Sony A6100
  • $823
  • APS-C
  • Higher extended ISO
  • $648
  • APS-C
  • Less expensive

Compare Sony A6400 vs Sony A6100

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