• APS-C 372.9mm2
  • 12.3 megapixels
  • ISO 200 - 3200
  • APS-C 332.3mm2
  • 18.0 megapixels
  • ISO 100 - 6400

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Differences

Nikon D300S advantages over Canon T3i

  • Larger sensor
    APS-C vs APS-C
    More sensor area. Bigger is (generally) better.
  • Fast startup
    ~0.30 vs 1.5 sec
    Faster startup lets you catch the moment
  • Bigger pixels
    ~ 5.50 vs 4.30 microns
    Better low-light and dynamic range (all else equal)
  • Longer battery life
    More info 950 vs 440 shots
    Capture more photos
  • Top deck display
    Yes vs No
    Check settings with a screen on top of the camera
  • More viewfinder magnification
    0.63x vs 0.53x
    Get a bigger view of the scene through the eye-level viewfinder
  • More cross-type AF points
    15 vs 1
    Cross-type AF points improve autofocus performance
  • Dual card slots
    Yes vs No
    Gives you more storage flexibility
  • Pentaprism viewfinder
    Pentaprism vs Pentamirror
    Much better viewfinder picture fidelity
  • More AF points
    51 vs 9
    More AF points improve autofocus
  • Bigger JPEG buffer
    26 vs 9 shots
    Take more JPEG shots before waiting (burst mode)
  • Faster JPEG shooting
    7.1 fps vs 3.6 fps
    Faster JPEG shooting (burst mode)
  • Faster shutter
    1/8000 vs 1/4000 sec
    Shoot wide open in bright light

Canon T3i advantages over Nikon D300S

  • Tilt-swivel screen
    Tilt-swivel vs none
    Tilt and swivel the screen for maximum shooting flexibility
  • Shoots 60p video
    Yes vs No
    A faster framerate can give you more editing options
  • Shoots 1080p video
    Yes vs No
    You'll want this if you shoot video
  • More pixels
    18.0 vs 12.3 megapixels
    Higher resolution photos
  • Higher extended ISO
    12800 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
  • External Mic Jack
    Both provide
    Improved sound fidelity when shooting video
  • HDMI out
    Both provide
    Use an external screen to monitor or review video
  • Hot shoe
    Both provide
    Off-camera flashes open new possibilities
  • Internal flash
    Both provide
    Useful in a pinch for fill flash
  • 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
  • NFC
    Neither provide
    Simplifies pairing your camera with supported phones
  • Touchscreen
    Neither provide
    Select your focus point more intuitively.
  • In-camera panoramas
    Neither provide
    Stitches multiple shots into a panoramic photo
  • In-Camera Image Stabilization
    Neither provide
    Reduces the effects of camera shake at slower shutter speeds
  • Built-in Wi-Fi
    Neither provide
    Share your photos wirelessly
  • Built-in GPS
    Neither provide
    Geotag your photos
  • On-sensor phase detect
    Neither provide
    Usually improves live view and video AF performance
  • Headphone jack
    Neither provide
    Monitor audio recording while you shoot video
  • Slow-motion videos
    Neither provide
    Shoot slow-motion videos

User reviews

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Review Excerpt

  • Excellent image quality; Good grip; Full HD video recording; Swiveling LCD; Very fast autofocus; HDMI output.

  • Slow frame rate for sports shooting; Tendency to overexpose in bright sunlight; Live View AF is slow; No microfocus adjustment.

The Competition

Compared to Nikon D90

Nikon D300S
Nikon D90
  • $1278
  • APS-C
  • More cross-type AF points
  • External Mic Jack
  • $1300
  • APS-C
  • Higher effective ISO
  • Bigger JPEG buffer
Canon T3i
Nikon D90
  • $549
  • APS-C
  • Tilt-swivel screen
  • Less expensive
  • $1300
  • APS-C
  • Larger sensor
  • Fast startup

Compared to Sony DSLR-A550

Nikon D300S
Sony DSLR-A550
  • $1278
  • APS-C
  • Lens selection
  • Fast startup
  • $859
  • APS-C
  • Tiltable Screen
  • In-Camera Image Stabilization
Canon T3i
Sony DSLR-A550
  • $549
  • APS-C
  • Lens selection
  • Tilt-swivel screen
  • $859
  • APS-C
  • Larger sensor
  • Fast startup

Compared to Nikon D7000

Nikon D300S
Nikon D7000
  • $1278
  • APS-C
  • Fast startup
  • More cross-type AF points
  • $699
  • APS-C
  • Higher effective ISO
  • More dynamic range
Canon T3i
Nikon D7000
  • $549
  • APS-C
  • Tilt-swivel screen
  • Less expensive
  • $699
  • APS-C
  • Larger sensor
  • Fast startup

Compared to Pentax K-5

Nikon D300S
Pentax K-5
  • $1278
  • APS-C
  • Fast startup
  • Longer battery life
  • $545
  • APS-C
  • Less expensive
  • In-Camera Image Stabilization
Canon T3i
Pentax K-5
  • $549
  • APS-C
  • Tilt-swivel screen
  • Shoots 60p video
  • $545
  • APS-C
  • Larger sensor
  • Fast startup

Compared to Sigma SD1

Nikon D300S
Sigma SD1
  • $1278
  • APS-C
  • Lens selection
  • Fast startup
  • $1987
  • APS-C
  • Less expensive
  • More pixels
Canon T3i
Sigma SD1
  • $549
  • APS-C
  • Lens selection
  • Tilt-swivel screen
  • $1987
  • APS-C
  • Larger sensor
  • Bigger pixels
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