I recently updated my DSLR collection to the Nikon D3100 from the Nikon D70. There are good reviews out there that you should check out. However, I would like to share some of my first impressions.
Pro:
-Better image quality and lower noise at high ISO with the D3100
-MUCH MUCH lighter, which will be nice when traveling
-Larger LCD screen
-11 focus points, including 3D focus which tracks the motion of the subject or camera.
-1080p Video
-14 megapixels
-2nd Generation DSLR
-Quiet, quiet, quiet
Cons:
-No bracketing option. Not a huge deal since I only bracket once a year
-Cannot use my old 50mm 1.8 lens. I knew this before purchasing the camera.
-As of 10/1/2010, Camera RAW for the D3100 is not supported in Photoshop or Lightroom. Need to shoot .jpg + RAW or use Nikon Capture NX2 for RAW files. That should be updated soon, so not a big deal.
-Can hear the lens focusing when recording video.
-No depth of field preview.
-Can’t use wireless remote
Picture Control
Choose from Standard, Neutral, Vivid, Monochrome, Portrait, or Landscape to apply a personal look and feel to your pictures.
Automatic Image Sensor Cleaning
Ultrasonic process and exclusive Airflow Control combats the accumulation of dust in front of the image sensor, safeguarding image quality shot after shot.
Built-in pop-up flash
Perfect for those times when there isn’t enough light.
In-camera Image Editing
Allows creative freedom, without the need for a computer, offering easy editing functions.
Compatible Lenses
AF-S and AF-I: All functions supported
Type G or D AF NIKKOR without built-in autofocus motor: All functions except autofocus supported. IX NIKKOR lenses not supported.
Other AF NIKKOR: All functions supported except autofocus and 3D color matrix metering II. Lenses for F3AF not supported.
Type D PC NIKKOR: All functions supported except autofocus and some shooting modes.
AI-P NIKKOR: All functions supported except autofocus and 3D color matrix metering II.
Non-CPU: Autofocus not supported. Can be used in exposure mode M, but exposure meter does not function.
Note: Electronic rangefinder can be used if lens has a maximum aperture of f/5.6 or faster.
What’s in the Box
D3100 digital SLR camera body; AF-S DX NIKKOR 18-55mm f/3.5-5.6G VR Lens; EN-EL14 Rechargeable Li-ion Battery, MH-24 Battery Charger, DK-5 Eyepiece Cap, DK-20 Rubber Eyecap, AN-DC3 Camera Strap, BS-1 Accessory Shoe Cover, BF-1B Body Cap, ViewNX 2 CD-ROM