• APS-C 372.9mm2
  • 12.3 megapixels
  • ISO 200 - 3200
  • 35mm 861.6mm2
  • 24.6 megapixels
  • ISO 200 - 3200

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Differences

Nikon D90 advantages over Sony A900

  • Less expensive
    $1300 vs $3000 (MSRP)
    Save money for lenses or accessories
  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Fast startup
    ~0.30 vs 0.5 sec
    Faster startup lets you catch the moment
  • Internal flash
    Internal flash vs None
    Useful in a pinch for fill flash
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Bigger JPEG buffer
    Unlimited vs 11 shots
    Take more JPEG shots before waiting (burst mode)

Sony A900 advantages over Nikon D90

  • Larger sensor
    35mm vs APS-C
    More sensor area. Bigger is (generally) better.
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Higher effective ISO
    1,431 vs 977 iso
    Take photos in low light with less noise
  • More viewfinder magnification
    0.74x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    24.6 vs 12.3 megapixels
    Higher resolution photos
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Faster JPEG shooting
    5.0 fps vs 4.5 fps
    Faster JPEG shooting (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

Similarities

Common Strengths

  • Eye-level viewfinder
    Both provide
    You'll be able to frame photos even when the sun is out
  • Top deck display
    Both provide
    Check settings with a screen on top of the camera
  • Pentaprism viewfinder
    Both provide
    Much better viewfinder picture fidelity
  • 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

  • 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
  • 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
  • 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
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

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Review Excerpt

The Competition

Compared to Sony A850

Nikon D90
Sony A850
  • $1300
  • APS-C
  • Lens selection
  • Less expensive
  • $2219
  • 35mm
  • Larger sensor
  • In-Camera Image Stabilization

Compare Nikon D90 vs Sony A850

Sony A900
Sony A850
  • $3000
  • 35mm
  • Faster JPEG shooting
  • $2219
  • 35mm
  • Less expensive
  • Bigger JPEG buffer

Compare Sony A900 vs Sony A850

Compared to Sony DSLR-A550

Nikon D90
Sony DSLR-A550
  • $1300
  • APS-C
  • Lens selection
  • Fast startup
  • $859
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization

Compare Nikon D90 vs Sony DSLR-A550

Sony A900
Sony DSLR-A550
  • $3000
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $859
  • APS-C
  • Less expensive
  • Tiltable Screen

Compare Sony A900 vs Sony DSLR-A550

Compared to Sony DSLR-A500

Nikon D90
Sony DSLR-A500
  • $1300
  • APS-C
  • Lens selection
  • Fast startup
  • $850
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization

Compare Nikon D90 vs Sony DSLR-A500

Sony A900
Sony DSLR-A500
  • $3000
  • 35mm
  • Larger sensor
  • Higher effective ISO
  • $850
  • APS-C
  • Less expensive
  • Tiltable Screen

Compare Sony A900 vs Sony DSLR-A500

Compared to Pentax K-5

Nikon D90
Pentax K-5
  • $1300
  • APS-C
  • Less expensive
  • Fast startup
  • $800
  • APS-C
  • In-Camera Image Stabilization
  • Higher effective ISO

Compare Nikon D90 vs Pentax K-5

Sony A900
Pentax K-5
  • $3000
  • 35mm
  • Larger sensor
  • Bigger pixels
  • $800
  • APS-C
  • Lens selection
  • Less expensive

Compare Sony A900 vs Pentax K-5

Compared to Canon 5D Mark III

Nikon D90
Canon 5D Mark III
  • $1300
  • APS-C
  • Fast startup
  • Internal flash
  • $2079
  • 35mm
  • Larger sensor
  • Higher effective ISO

Compare Nikon D90 vs Canon 5D Mark III

Sony A900
Canon 5D Mark III
  • $3000
  • 35mm
  • In-Camera Image Stabilization
  • $2079
  • 35mm
  • Lens selection
  • Higher effective ISO

Compare Sony A900 vs Canon 5D Mark III

Compare Other Cameras?