Manual Focus is available for use when autofocus or focus lock is not desired.

ENGADGET: Sigma DP3 Merrill packs a Foveon X3 sensor and a fixed F2.8, 75mm-equivalent lens

Can also sent auto-exposure and auto-focus lock.

FORBES: Apple: Live From The WWDC; OSX Lion, iOS 5; iCloud

Also the camera's hi-speed auto focus can lock onto subject in as little as 0.1 seconds, letting users grab the most fleeting photo moments with ease.

ENGADGET: Sony Cyber-shot TX55 packs 16.2-megapixel sensor, promises 'extremely low' noise in dim light

The D3100 camera also uses Face Detection technology to lock focus on up to 35 human faces, a feat not even accomplished with consumer camcorders.

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

From the sidelines of the soccer field to bird-watching on a riverboat, engage AF Tracking technology to lock focus on your fast-moving subjects and keep them in focus, even while they move in and out of the frame.

ENGADGET: Olympus launches SP-810UZ, packs 36x wide-angle zoom in a compact camera

The 1080p HD video camera automatically removes jitters and lets you lock the focus on a moving object.

ENGADGET: HTC One X exclusive to AT&T in the US, brings LTE, Beats, ICS and Sense 4 to Ma Bell

Lock in your investment plan, automate contributions to your accounts, and then focus on other areas of your life.

FORBES: Regaining Control in a Crazy Market

For a moment I focus on the glass and catch the faint, honest reflection of my eye staring back at me, a lock of gray straggly hair in its way.

NPR: Excerpt: 'The Sister'

In their dogged focus on selling more milk, dairy companies largely overlooked these highly profitable markets, even though they had the lock on the basic ingredient for many of them.

FORBES: How the Milk Industry Went Sour, and What Every Business Can Learn From It