General

compared to recent entry-level DSLRs
"There's no doubt that the D3100 is one of the best entry-level SLRs available, offering very good image quality coupled with speedy operation and straightforward handling - at least for conventional eye-level use."
dpreview.com | talking about the camera's overall-performance
Brand
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Nikon
Lowest price
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$329.00
above average above average
Announced
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August 2010
below average below average

Sensor

"The D3100 offers little to complain about in terms of image quality, and its new 14Mp sensor delivers very good results."
dpreview.com | talking about the camera's image-quality
Type
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CMOS
Crop factor
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1.6x
below average below average
Megapixels
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14.2 MP
below average below average
Light sensitivity
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3,200 ISO
below average below average
Light sensitivity (boost)
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12,800 ISO
Sensor cleaning
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Yes

Sensor (Advanced)

compared to recent entry-level DSLRs
True resolution
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14.2 MP
below average below average
Native resolution
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4608 × 3072
below average below average
Pixel size
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25.1 µm²
unique unique

Screen

Type
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LCD
Size
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3"
below average below average
Resolution
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230k dots
below average below average
Touch screen
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No
below average below average
Flips out
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No
below average below average
Live view
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Yes

Lenses

compared to recent entry-level DSLRs
Lens availability
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230 lenses
above average above average
Lens mount
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Nikon F

Form factor

"It's almost impossible to pick up without your hand falling into a sensible position with the key controls at your fingertips."
dpreview.com | talking about the camera's button-layout
"In addition to these buttons and switches the D3100 has also gained a proper rubber grip, rather than the rubberized coating that featured on the D3000"
dpreview.com | talking about the camera's build-quality
Size
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124×97×74 mm
Depth
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2.9"
Weight
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505 g
Interchangeable lenses
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Yes
Waterproof
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No
Weather sealed
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No
below average below average
Built-in focus motor
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No
below average below average

Viewfinder

compared to recent entry-level DSLRs
Type
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Pentamirror
below average below average
Viewfinder size
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0.51x
below average below average
Coverage
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95%
below average below average

Movies

"On the whole the D3100's movies are really rather good, with smooth motion and impressively low noise in dim light."
dpreview.com | talking about the camera's video-quality
Format
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1080p @ 24fps
below average below average
Supports 24p
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Yes
High-speed framerate
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None
External mic jack
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No
below average below average
Autofocus
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Contrast detection
Continuous focus
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Yes
unique unique
All formats
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  1. 640 x 424 @ 24fps
  2. 720p @ 24fps
  3. 720p @ 25fps
  4. 720p @ 30fps
  5. 1080p @ 24fps

Features

compared to recent entry-level DSLRs
Panorama
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No
HDR
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No
3D
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No
Image stabilization
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None
below average below average
Supports RAW
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Yes
GPS
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No
below average below average

Performance

Startup delay
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400 ms
below average below average
Shutter lag
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279 ms
below average below average
Battery life
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550 shots
below average below average
Continuous shooting
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3 fps
below average below average

Focus system

compared to recent entry-level DSLRs
Autofocus
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Phase detection
above average above average
Focus points
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11
below average below average
Cross type focus points
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1

Shutter

Max
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1/4000s
below average below average
Min
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30s

Flash

compared to recent entry-level DSLRs
Built-in flash
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Yes
Popup
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Yes
above average above average
External connection
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Yes

Storage

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

DXO Mark Scores

compared to recent entry-level DSLRs
"High ISO performance is substantially improved over the D3000, to the extent that images shot at sensitivities as high as 3200 are eminently useable"
dpreview.com | talking about the camera's iso-noise
Image quality
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67.0
Color depth
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22.5 bits
Dynamic range
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11.3 EV
Low light performance
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919 ISO