Key features :-
1) HD Video max 1080p at 24fps , 720p at 30 fps
2) Continous Auto Focus in Video
3) 14 mp CMOS
4) Expeed 2 processor Better ISO performance 12800 Max ISO
5) 11 focus Points
6) Price : $699 at launch with 18-55mm Kit
Cons
1) No AF with older lenses - Well it was expected as even the more expensive D5000 doesn't have that
2) No 60 fps 720p
Specifications
Type Single-lens reflex digital camera
Lens mount Nikon F mount (with AF contacts)
Effective pixels 14.2 million
Image sensor 23.1 x 15.4 mm CMOS sensor
Image size (pixels) 4,608 x 3,072 [L]
3,456 x 2,304 [M]
2,304 x 1,536
File format 1) NEF(RAW), 2)JPEG, 3)NEF(RAW)+JPEG
Media SD (Secure Digital) memory cards *1, SDHC- and SDXC-compliant
Frame advance rate Up to 3 fps *2
ISO sensitivity ISO 100 to 3200 in steps of 1 EV; Can also be set to approx. 1 EV above ISO 3200 (ISO 6400 equivalent)
above ISO 3200 (ISO 12800 equivalent); auto ISO sensitivity control available
Movie Frame size (pixels) and frame rate: 1,920 x 1,080; 24 p - 1,280 x 720; 30 p - 1,280 x 720; 25 p - 1,280 x 720; 24 p - 640 x 424; 24 p
Maximum Recording Time:10 min.
File format/Video compression: MOV, H.264/MPEG-4 Advanced Video Cording
Audio recording device; Supported:monaural recording with built-in microphone.
LCD monitor 3-in., approx. 230 k-dot TFT LCD with brightness adjustment
Power source Battery; One rechargeable Li-ion EN-EL14 battery
AC adapter(optional);EH-5a AC adapter; requires EP-5 power connector
Dimensions (approx.) (W x H x D) 124 X 96 X 74.5mm
Weight (approx.) 455g without battery, memory card, or body cap,
505g;with battery and memory card but without body cap
Major supplied accessories EN-EL14 rechargeable Li-ion battery, MH-24 battery charger, AN-DC3 camera strap, ViewNX 2 CD-ROM, Ferrite Core
(2 types)
Lenses launched
AF-S NIKKOR 85mm f/1.4G
AF-S NIKKOR 24-120mm f/4G ED VR
AF-S NIKKOR 28-300mm f/3.5-5.6G ED VR
AF-S DX NIKKOR 55-300mm f/4.5-5.6G ED VR
Links : Nikon | News | Digital-SLR camera Nikon D3100
Nikon D3100 | Nikon
Nikon D3100 digital SLR announced and previewed: Digital Photography Review
Nikon | News | AF-S NIKKOR 85mm f/1.4G, AF-S NIKKOR 24-120mm f/4G ED VR and AF-S NIKKOR 28-300mm f/3.5-5.6G ED VR
Nikon | News | AF-S NIKKOR 85mm f/1.4G, AF-S NIKKOR 24-120mm f/4G ED VR and AF-S NIKKOR 28-300mm f/3.5-5.6G ED VR