• APS-C 342.8mm2
  • 6.3 megapixels
  • ISO 100 - 3200
  • APS-C 337.5mm2
  • 8.2 megapixels
  • ISO 100 - 1600

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Differences

Canon 10D advantages over Canon 30D

  • Bigger pixels
    ~ 7.39 vs 6.42 microns
    Better low-light and dynamic range (all else equal)
  • Less shutter lag
    0.15 vs 0.24 sec
    Focus and take a photo quickly (wide angle)

Canon 30D advantages over Canon 10D

  • Less expensive
    $1399 vs $1999 (MSRP)
    Save money for lenses or accessories
  • Fast startup
    ~0.10 vs 2.3 sec
    Faster startup lets you catch the moment
  • Higher effective ISO
    736 vs 571 iso
    Take photos in low light with less noise
  • Longer stills battery life
    More info 750 vs 500 shots
    Capture more photos
  • More cross-type AF points
    9 vs 1
    Cross-type AF points improve autofocus performance
  • More dots on screen
    230k vs 118k dots
    Can mean greater resolution or a brighter screen
  • More pixels
    8.2 vs 6.3 megapixels
    Higher resolution photos
  • Faster JPEG shooting
    5.0 fps vs 2.9 fps
    Faster JPEG shooting (burst mode)
  • Bigger JPEG buffer
    28 vs 9 shots
    Take more JPEG shots before waiting (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
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • Top deck display
    Both provide
    Check settings with a screen on top of the camera
  • Pentaprism viewfinder
    Both provide
    Much better viewfinder picture fidelity
  • 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
  • In-Camera Image Stabilization
    Neither provide
    Reduces the effects of camera shake at slower shutter speeds
  • 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
  • HDMI out
    Neither provide
    Use an external screen to monitor or review video
  • 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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