General

Canon Rebel T3i Canon PowerShot SD870 IS
Brand
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Canon Canon
Lowest price
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Unknown Unknown
Announced
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February 2011 August 2007

Sensor

Type
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CMOS CCD
Sensor size
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n/a 1/2.5" 5.75x4.31mm
Crop factor
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1.6x n/a
Megapixels
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17.9 MP 8 MP
Light sensitivity
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6,400 ISO 1,600 ISO
Light sensitivity (boost)
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12,800 ISO None
Sensor cleaning
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Yes n/a

Sensor (Advanced)

True resolution
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17.9 MP 8 MP
Native resolution
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5184 × 3456 3264 × 2448
Pixel size
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18.5 µm² 3.1 µm²

Screen

Type
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LCD LCD
Size
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3" 3"
Resolution
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1,040k dots 230k dots
Touch screen
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No No
Flips out
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Yes No
Live view
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Yes n/a

Lenses

Lens availability
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220 lenses n/a
Lens mount
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Canon EF n/a

Form factor

Size
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133×100×80 mm 93×59×26 mm
Depth
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3.1" 1"
Weight
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570 g 205 g
Interchangeable lenses
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Yes No
Waterproof
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No No
Weather sealed
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No n/a
Built-in focus motor
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No n/a

Viewfinder

Type
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Pentamirror None
Viewfinder size
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0.53x n/a
Coverage
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95% n/a

Movies

Format
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1080p @ 30fps 480p @ 30fps
Supports 24p
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Yes No
High-speed framerate
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None None
External mic jack
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Yes No
Autofocus
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None Unknown
All formats
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  1. 480p @ 30fps
  2. 480p @ 50fps
  3. 480p @ 60fps
  4. 720p @ 30fps
  5. 720p @ 50fps
  6. 720p @ 60fps
  7. 1080p @ 24fps
  8. 1080p @ 25fps
  9. 1080p @ 30fps
  1. 320 x 240 @ 30fps
  2. 480p @ 30fps

Features

Panorama
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No No
HDR
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No No
3D
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No No
Image stabilization
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None
  1. Lens
Supports RAW
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Yes No
GPS
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No No

Performance

Startup delay
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1500 ms 1000 ms
Shutter lag
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283 ms 380 ms
Battery life
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440 shots 270 shots
Continuous shooting
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3.7 fps 1.3 fps

Focus system

Autofocus
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Phase detection Contrast detection
Focus points
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9 Unknown
Cross type focus points
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1 Unknown

Shutter

Max
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1/4000s 1/1600s
Min
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30s 15s

Flash

Built-in flash
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Yes Yes
Popup
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Yes No
External connection
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Yes No

Storage

Storage slots
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1 1
Supported formats
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  1. SD
  2. SDHC
  3. SDXC
  1. MMC
  2. SD
  3. SDHC

DXO Mark Scores

Image quality
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65.0 Unknown
Color depth
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22.1 bits Unknown
Dynamic range
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11.5 EV Unknown
Low light performance
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793 ISO Unknown

Lens

Zoom
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n/a 3.8x
Wide angle
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n/a 28 mm
Telephoto
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n/a 105 mm
Aperture (wide angle)
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n/a f/2.8
Aperture (telephoto)
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n/a f/5.8
Macro focus
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n/a 2.0 cm
Canon Rebel T3i
Rebel T3i
Canon

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Canon PowerShot SD870 IS
PowerShot SD870 IS
Canon

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