Login or Join Now

Upload your photos, chat, win prizes and much more

Username:
Password:
Remember Me

Can't Access your Account?

New to ePHOTOzine? Join ePHOTOzine for free!

Active autofocus

Join Now

Join ePHOTOzine, the friendliest photography community.

Upload photos, chat with photographers, win prizes and much more for free!

PRIZES GALORE! Enter The ePHOTOzine Exclusive Christmas Prize Draw; Over £10,000 Worth of Prizes! Plus A Gift For Everybody On Christmas Day!
A camera with active autofocusing uses an infrared beam to determine how far away the subject is. This is fine providing the subject isn't behind glass, because the beam will think the glass is the subject. The system is also flawed when the subject is beyond the range of the infrared, then the camera usually switches to an infinity mode.

Related Terms