• APS-C 369.7mm2
  • 10.2 megapixels
  • ISO 100 - 3200
  • APS-C 355.7mm2
  • 14.2 megapixels
  • ISO 100 - 3200

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Differences

Sony DSLR-A200 advantages over Nikon D3100

  • Less expensive
    $600 vs $700 (MSRP)
    Save money for lenses or accessories
  • In-Camera Image Stabilization
    Yes vs No
    Reduces the effects of camera shake at slower shutter speeds
  • Bigger pixels
    ~ 6.12 vs 5.01 microns
    Better low-light and dynamic range (all else equal)
  • Longer stills battery life
    More info 750 vs 550 shots
    Capture more photos
  • More telephoto lens reach
    105 mm vs 83 mm
    Capture objects farther away with the kit lens
  • Less shutter lag
    0.19 vs 0.28 sec
    Focus and take a photo quickly (wide angle)

Nikon D3100 advantages over Sony DSLR-A200

  • Lens selection
    Excellent vs Good
    Better lens selection gives you more options
  • Fast startup
    ~0.40 vs 1.5 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    919 vs 521 iso
    Take photos in low light with less noise
  • HDMI out
    HDMI out vs None
    Use HDMI output to monitor or review video
  • Shoots 24p video
    Yes vs No
    Gives your movies a big-screen feel
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    14.2 vs 10.2 megapixels
    Higher resolution photos
  • Bigger JPEG buffer
    100 vs 8 shots
    Take more JPEG shots before waiting (burst mode)
  • Higher extended ISO
    12800 vs 3200 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
  • 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
  • Top deck display
    Neither provide
    Check settings with a screen on top of the camera
  • External Mic Jack
    Neither provide
    Improved sound fidelity when shooting video
  • Pentaprism viewfinder
    Neither provide
    Much better viewfinder picture fidelity
  • 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 Pentax K200D

Sony DSLR-A200
Pentax K200D
  • $470
  • APS-C
  • Less expensive
  • Longer stills battery life
  • $800
  • APS-C
  • Lens selection
  • Fast startup
Nikon D3100
Pentax K200D
  • $700
  • APS-C
  • Higher effective ISO
  • Longer stills battery life
  • $800
  • APS-C
  • In-Camera Image Stabilization
  • Bigger pixels

Compared to Nikon D60

Sony DSLR-A200
Nikon D60
  • $470
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
  • $700
  • APS-C
  • Lens selection
  • Fast startup
Nikon D3100
Nikon D60
  • $700
  • APS-C
  • Higher effective ISO
  • HDMI out
  • $700
  • APS-C
  • Bigger pixels

Compared to Sony DSLR-A300

Sony DSLR-A200
Sony DSLR-A300
  • $470
  • APS-C
  • Less expensive
  • More viewfinder magnification
  • $563
  • APS-C
  • Tiltable Screen
  • Bigger JPEG buffer
Nikon D3100
Sony DSLR-A300
  • $700
  • APS-C
  • Lens selection
  • Higher effective ISO
  • $563
  • APS-C
  • In-Camera Image Stabilization
  • Bigger pixels

Compared to Sony A33

Sony DSLR-A200
Sony A33
  • $470
  • APS-C
  • Less expensive
  • Bigger pixels
  • $540
  • APS-C
  • In-camera panoramas
  • Tiltable Screen
Nikon D3100
Sony A33
  • $700
  • APS-C
  • Lens selection
  • Fast startup
  • $540
  • APS-C
  • In-Camera Image Stabilization
  • In-camera panoramas

Compared to Pentax K-r

Sony DSLR-A200
Pentax K-r
  • $470
  • APS-C
  • Less expensive
  • Longer stills battery life
  • $850
  • APS-C
  • Lens selection
  • Fast startup
Nikon D3100
Pentax K-r
  • $700
  • APS-C
  • Less expensive
  • Higher effective ISO
  • $850
  • APS-C
  • In-Camera Image Stabilization
  • Fast startup
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