Slower cards will produce correspondingly slower clearing times. The Nikon D3000's startup time is about average for an SLR, but shutdown is quite slow (probably due to sensor cleaning).

As with most DSLRs, the Nikon D3100 has an optical viewfinder that lets you view your subject through the lens. Unlike the D3000, the Nikon D3100 also offers Live View mode which allows you to ...