The Nikon 1 J2 retains user-friendly features such as Full HD video recording, and a reputation for blazing fast speed with the ability to capture rapidly moving subjects at an astounding 10 frames-per- second (fps) with AF, or up to 60 fps with AF locked on the first frame.

ENGADGET: Nikon 1 J2 mirrorless camera: minor control tweaks, $549, ships in September

More than 80% of the AF episodes occurred within the first three days after implantation.

FORBES: Study Examines New-Onset Atrial Fibrillation After TAVI

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