The Nikon Coolpix 8400’s most noteworthy feature is its f/2.6 to f/4.9 6.1-mm to 21.6-mm (24-mm to 85-mm, 35-mm equivalent) 3.5X optical zoom lens. We enjoyed the flexibility the lens gave us, and we got some great shots that we wouldn’t have been able to get with a lens that didn’t go as wide (it’s not always practical to frame your shot by moving back). The 8400 is a big blocky camera with a telescoping lens that retracts entirely into the body when deactivated. We like that its LCD swivels, but wish it were a bit bigger than 1.8 inches. We love the Nikon Coolpix 8400 for its lens, which takes impressively sharp images. If you’re not looking for speed or video, this slow but sharp shooter is a very good choice.