General

Canon Rebel T3i Sony Alpha NEX-3
Brand
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Canon Sony
Lowest price
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$439.95 $498.00
Announced
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February, 2011 May, 2010

Sensor

Type
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CMOS CMOS
Size
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APS-C 22.3x14.9mm APS-C 23.4x15.6mm
Crop factor
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1.6x 1.5x
Megapixels
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17.9 MP 14 MP
Light sensitivity
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6,400 ISO 12,800 ISO
Light sensitivity (boost)
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12,800 ISO None
Sensor cleaning
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Yes Yes

Sensor (Advanced)

True resolution
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17.9 MP 14 MP
Native resolution
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5184 x 3456 4592 x 3056
Pixel size
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18.5 µm² 26 µm²

Screen

Type
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LCD LCD
Size
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3.0" 3.0"
Resolution
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1,040k dots 920k dots
Touch screen
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No No
Flips out
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Yes Yes
Live view
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Yes Yes

Lenses

Lens availability
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197 lenses 21 lenses
Lens focus motor
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Yes Yes
Lens mount
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Canon EF Sony E

Form factor

Size
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133x99x79 mm 117x62x33 mm
Depth
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3.1" 1.3"
Weight
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570 g 297 g
Interchangeable lenses
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Yes Yes
Waterproof
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No No
Weather sealed
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No No

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 720p @ 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 Yes
Autofocus
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None Contrast detection
Continuous focus
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n/a Yes
All formats
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480p @ 30fps
480p @ 50fps
720p @ 60fps
720p @ 30fps
720p @ 50fps
480p @ 60fps
1080p @ 25fps
1080p @ 30fps
1080p @ 24fps
480p @ 30fps
720p @ 30fps

Features

Panorama
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No Yes
HDR
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No Yes
3D
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No Yes
Image stabilization
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None None
Supports RAW
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Yes Yes
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 670 ms
Battery life
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440 shots 330 shots
Continuous shooting
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3.7 fps 7 fps

Focus system

Autofocus
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Phase detection Contrast detection
Focus points
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9 25
Cross type focus points
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1 0

Shutter

Max
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1/4000s 1/4000s
Min
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30s 30s

Flash

Built-in flash
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Yes No
Popup
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Yes n/a
External connection
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Yes Yes

Storage

Storage slots
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1 1
Supported formats
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SDXC
SDHC
SD
SD
SDHC
SDXC
Memory Stick PRO Duo
Memory Stick
Memory Stick Duo

DXO Mark Scores

Image quality
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65.0 68.0
Color depth
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22.1 bits 22.1 bits
Dynamic range
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11.5 EV 12 EV
Low light performance
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793 ISO 830 ISO
Canon Rebel T3i
Rebel T3i
Canon

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Sony Alpha NEX-3
Alpha NEX-3
Sony

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