• APS-C 372.9mm2
  • 12.3 megapixels
  • ISO 200 - 3200
  • APS-C 369.7mm2
  • 14.2 megapixels
  • ISO 100 - 12,800

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Differences

Nikon D90 advantages over Sony A33

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Fast startup
    ~0.30 vs 0.8 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    977 vs 591 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 850 vs 270 shots
    Capture more photos
  • More telephoto lens reach
    158 mm vs 83 mm
    Capture objects farther away with the kit lens
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Bigger JPEG buffer
    Unlimited vs 13 shots
    Take more JPEG shots before waiting (burst mode)

Sony A33 advantages over Nikon D90

  • Less expensive
    $750 vs $1300 (MSRP)
    Save money for lenses or accessories
  • 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
  • External Mic Jack
    Jack vs No jack
    Improved sound fidelity when shooting video
  • More cross-type AF points
    3 vs 1
    Cross-type AF points improve autofocus performance
  • Lighter weight
    725g vs 1133g
    Lighter weight
  • More viewfinder magnification
    0.73x vs 0.63x
    Get a bigger view of the scene through the eye-level viewfinder
  • More pixels
    14.2 vs 12.3 megapixels
    Higher resolution photos
  • More AF points
    15 vs 11
    More AF points improve autofocus
  • Faster JPEG shooting
    7.1 fps vs 4.5 fps
    Faster JPEG shooting (burst mode)
  • Higher extended ISO
    25600 vs 6400 ISO
    Higher extended ISO can give more low-light flexibility

Similarities

Common Strengths

  • 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
  • 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
  • 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
  • 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

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Review Excerpt

The Competition

Compared to Nikon D300S

Nikon D90
Nikon D300S
  • $1300
  • APS-C
  • Higher effective ISO
  • Bigger JPEG buffer
  • $1477
  • APS-C
  • External Mic Jack
  • More cross-type AF points
Sony A33
Nikon D300S
  • $540
  • APS-C
  • In-Camera Image Stabilization
  • In-camera panoramas
  • $1477
  • APS-C
  • Lens selection
  • Fast startup

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
Sony A33
Sony DSLR-A550
  • $540
  • APS-C
  • Less expensive
  • In-camera panoramas
  • $859
  • APS-C
  • Fast startup
  • Higher effective ISO

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
Sony A33
Sony DSLR-A500
  • $540
  • APS-C
  • In-camera panoramas
  • External Mic Jack
  • $850
  • APS-C
  • Fast startup
  • Higher effective ISO

Compared to Nikon D3100

Nikon D90
Nikon D3100
  • $1300
  • APS-C
  • Fast startup
  • More dynamic range
  • $700
  • APS-C
  • Less expensive
  • Lighter weight
Sony A33
Nikon D3100
  • $540
  • APS-C
  • In-Camera Image Stabilization
  • In-camera panoramas
  • $700
  • APS-C
  • Lens selection
  • Fast startup

Compared to Sony A55

Nikon D90
Sony A55
  • $1300
  • APS-C
  • Lens selection
  • Fast startup
  • $734
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
Sony A33
Sony A55
  • $540
  • APS-C
  • $734
  • APS-C
  • Higher effective ISO
  • Built-in GPS
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