Nikon
D5100
 vs
Nikon
D3100

General

 Nikon D5100 Nikon D3100
Brand
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 Nikon Nikon
Lowest price
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 $499.99 $499.99
Announced
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 April, 2011 August, 2010

Sensor
Type
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 CMOS CMOS
Size
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 APS-C 23.6x15.6mm APS-C 23.1x15.4mm
Crop factor
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 1.5x 1.6x
Megapixels
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 16.1 MP 14.2 MP
Light sensitivity
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 6,400 ISO 3,200 ISO
Light sensitivity (boost)
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 25,600 ISO 12,800 ISO
Sensor cleaning
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 Yes Yes

Sensor (Advanced)
True resolution
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 16.1 MP 14.2 MP
Native resolution
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 4928 x 3264 4608 x 3072
Pixel size
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 22.9 µm² 25.1 µm²

Screen
Type
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 LCD LCD
Size
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 3.0" 3.0"
Resolution
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 920k 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 Yes

Lenses
Lens availability
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 169 lenses 169 lenses
Lens focus motor
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 No No
Lens mount
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 Nikon F Nikon F

Form factor
Size
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 127x96x78 mm 124x96x73 mm
Depth
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 3.1" 2.9"
Weight
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 560 g 505 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 Pentamirror
Viewfinder size
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 0.51x 0.51x
Coverage
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 95% 95%

Movies
Format
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 1080p @ 30fps 1080p @ 24fps
Supports 24p
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 Yes Yes
High-speed framerate
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 None None
External mic jack
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 Yes No
Autofocus
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 Contrast detection Contrast detection
Continuous focus
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 Yes Yes
All formats
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 720p @ 24fps
720p @ 30fps
640 x 424 @ 24fps
1080p @ 24fps
1080p @ 30fps		 720p @ 30fps
640 x 424 @ 24fps
1080p @ 24fps
720p @ 24fps
720p @ 25fps

Features
Panorama
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 No No
HDR
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 Yes No
3D
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 No No
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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 500 ms 400 ms
Shutter lag
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 273 ms 279 ms
Battery life
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 660 shots 550 shots
Continuous shooting
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 4 fps 3 fps

Focus system
Autofocus
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 Phase detection Phase detection
Focus points
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 11 11
Cross type focus points
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 1 1

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 Yes
Popup
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 Yes Yes
External connection
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 Yes Yes

Storage
Storage slots
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 1 1
Supported formats
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 SDHC
SD
SDXC		 SDXC
SDHC
SD

DXO Mark Scores
Image quality
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 80.0 67.0
Color depth
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 23.5 bits 22.5 bits
Dynamic range
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 13 EV 11.3 EV
Low light performance
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 1,183 ISO 919 ISO