It’s been a very busy year indeed for Nikon. On top of nine new lenses in 2010, last fall it announced two more camera bodies: the midlevel D7000 and entry-level D3100. The 14.2MP D3100 ($640, street, ...

Falling into line just above Nikon’s other entry-level D3000 DSLR, the D3100 has some fresh features that make it a very attractive DLSR option for photographers who are starting out. Its notable new ...