D3100 employs Nikon's latest breakthrough technology to deliver
superb results. A newly developed DX-format CMOS sensor with 14.2
effective megapixels works in tandem with new EXPEED 2 image processing
engine to produce highly detailed images containing rich tonal
gradations and faithful color. This combination also helps produce
beautifully defocused backgrounds - a hallmark of quality digital SLR
cameras. In addition, a maximum ISO of 3200 (expandable to ISO 12800
equivalent using the Hi 2 setting) allows you to shoot without worrying
about camera-shake blur.
An enchanting portrait against a softly defocused background, or a
radiant couple surrounded by sparkling lights. Taking photos like these
is easy with D3100's Guide Mode - in-camera guidance that shows you
step-by-step how to change camera settings. Just select a Guide Mode
setting that matches the scene then let Guide Mode assist. Not only will
you obtain the desired results, you'll understand how you achieved
them. Guide Mode even displays sample photos so you'll know what to
expect from each setting.