When shooting in Live View mode, the Hybrid CMOS AF system enables speedy and accurate autofocus for photos and video.

ENGADGET: Canon unveils EOS T5i and Rebel SL1, the world's smallest DSLR (hands-on)

It had previously used the patent to "produce preview images of acceptable quality" while in live view mode to secure a licensing deal with Samsung.

BBC: Kodak suffers image preview patent ruling setback

While Nikon pioneered HD video in a D-SLR, Nikon is now introducing another industry first to enrich the user experience: The D3100 is the first D-SLR to implement full time AF for D-Movie video shooting and while in Live View mode.

ENGADGET: Nikon D3100 gets real, adds 1080p movie mode with continuous autofocus

There's a new Gorilla Glass-equipped 3-inch, 920k-dot display, that's plenty sharp and quite responsive in live-view mode.

ENGADGET: New Leica M camera has live-view and 1080p video capture, we go hands-on (video)