Nikon has launched a pair of cameras in its Coolpix compact camera range. The Coolpix S6600 offers a 16-megapixel backside-illuminated CMOS sensor with lens-shift vibration reduction and 12x optical zoom, while the Coolpix L620 is equipped with an 18.1-megapixel BSI CMOS sensor with 14x optical zoom and a similar vibration reduction system.&n