6
Mastering Autofocus Options
One of the most useful and powerful features of modern digital cameras is their ability to lock in sharp focus faster than the blink of an eye. Sometimes. Although autofocus has been with us for more than 20 years, it continues to be problematic. While vendors like Sony are giving us faster and more precise autofocus systems, it’s common for the sheer number of options to confuse even the most advanced photographers.
One key problem is that the camera doesn’t really know, for certain, what subject you want to be in sharp focus. It may select an object and lock in focus with lightning speed—even though the subject is not the one that’s the center of interest of your photograph. Or, the camera may lock focus too ...
Get David Busch’s Sony Alpha a77 II/ILCA-77M2 Guide to Digital Photography now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
