• 35mm 860.4mm2
  • 16.2 megapixels
  • ISO 100 - 12,800
  • APS-C 369.7mm2
  • 16.1 megapixels
  • ISO 100 - 16,000

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Differences

Nikon D4 advantages over Sony A37

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • Bigger pixels
    ~ 7.31 vs 4.82 microns
    Better low-light and dynamic range (all else equal)
  • Fast startup
    ~0.30 vs 0.9 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    2,965 vs 799 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 2600 vs 450 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • More cross-type AF points
    15 vs 3
    Cross-type AF points improve autofocus performance
  • Higher max flash sync
    1/250 vs 1/160 sec
    Reduce the effect of ambient light in flash shots
  • Higher-res screen
    307k vs 77k pixels
    More detail on the screen lets you judge focus and composition
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • More AF points
    51 vs 15
    More AF points improve autofocus
  • Headphone jack
    Yes vs No
    Monitor audio recording while you shoot video
  • Faster JPEG shooting
    11.1 fps vs 5.5 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    Unlimited vs 10 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light
  • Higher extended ISO
    204800 vs 25600 ISO
    Higher extended ISO can give more low-light flexibility

Sony A37 advantages over Nikon D4

  • Focus peaking
    Peaker vs Non-peaker
    Your camera will highlight what's in focus
  • 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
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Less shutter lag
    0.11 vs 0.21 sec
    Focus and take a photo quickly (wide angle)

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • HDMI out
    Both provide
    Use HDMI output to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Bulb shutter
    Both provide
    Hold the shutter open manually for long exposures

Common Weaknesses

  • Touchscreen
    Neither provide
    Interact with your camera just like your smartphone
  • 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
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

Buy From

Review Excerpt

The Competition

Compared to Canon 1DX

Nikon D4
Canon 1DX
  • $4500
  • 35mm
  • Fast startup
  • More dynamic range
  • $5299
  • 35mm
  • More cross-type AF points
  • Less shutter lag
Sony A37
Canon 1DX
  • $600
  • APS-C
  • Less expensive
  • Focus peaking
  • $5299
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Sony A57

Nikon D4
Sony A57
  • $4500
  • 35mm
  • Lens selection
  • Larger sensor
  • $800
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
Sony A37
Sony A57
  • $600
  • APS-C
  • Less expensive
  • External Mic Jack
  • $800
  • APS-C
  • Longer stills battery life
  • Higher-res screen

Compared to Canon EOS-1D C

Nikon D4
Canon EOS-1D C
  • $4500
  • 35mm
  • $6989
  • 35mm
  • Shoot 4K video
  • More cross-type AF points
Sony A37
Canon EOS-1D C
  • $600
  • APS-C
  • Less expensive
  • Focus peaking
  • $6989
  • 35mm
  • Lens selection
  • Larger sensor

Compared to Pentax K-5 IIs

Nikon D4
Pentax K-5 IIs
  • $4500
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $497
  • APS-C
  • In-Camera Image Stabilization
  • Internal flash
Sony A37
Pentax K-5 IIs
  • $600
  • APS-C
  • Less expensive
  • Focus peaking
  • $497
  • APS-C
  • Lens selection
  • Fast startup

Compared to Nikon D4S

Nikon D4
Nikon D4S
  • $4500
  • 35mm
  • Bigger JPEG buffer
  • Bigger RAW buffer
  • $5399
  • 35mm
  • Fast startup
  • Higher extended ISO
Sony A37
Nikon D4S
  • $600
  • APS-C
  • Focus peaking
  • In-Camera Image Stabilization
  • $5399
  • 35mm
  • Lens selection
  • Larger sensor
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