Home New Models Cameras News Deals Video Reviews Firmware Manuals Free Software Rebates Shopping
 





Z-Cage

Free Photography Tutorials

HOT DEALS
 
Transcend 64 GB High Speed Class 10 UHS Flash Memory Card
Canon EOS 5DS 50.6 MP DSLR Digital SLR Camera (Body Only)
Sony DSC-RX100M IV Cyber-shot Digital Still Camera
Lowepro Nova Sport 17L AW Shoulder Bag for DSLR
Sony Alpha A7R II 42-Megapixel Mirrorless 4k Camera (Body)
Category: Focus Lock View Tutorial Categories
FEATURED WEB TUTORIAL: FOCUS LOCK
 

Autofocus Lock Explained

Published by:  ePhotozine
Tutorial Preview:

All autofocus cameras use either subject contrast or infrared detection to determine the subject's distance from the camera. The trouble is, although technically highly advanced, they can still easily be fooled. Your autofocus camera will have either passive or active autofocus, in simple terms passive uses electronics that can measure subject contrast to determine the distance, while active fires out an infrared beam to measure the distance. Unless the camera is one of the newer models with a wide area AF or multi point focus, the subject has to be in the centre of the frame and here's the downfall, and one reason why you may have got back blurred photos from your holiday or special occasion. If you take a photo with the subject off-centre the camera will focus on whatever is in the background. If this is a similar distance your shot will be safe, but often it's much further away and the camera adjusts focus to the background. The result is a blurred subject in front of a razor sharp background.
VIDEO: TUTORIAL
 

Professional Photography Secrets

PLAY IN NEW WINDOW VIEW DESCRIPTION

CATEGORIES: WEB TUTORIALS
 
VIDEO
 

 
The owner of this website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program
designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon properties including, but
not limited to, amazon.com, endless.com, myhabit.com, smallparts.com, or amazonwireless.com.

Copyright @2003-2015 Cameratown.com. All Rights Reserved. Terms of Use
All Rights Reserved. Reproduction in any form or medium without the
express written permission of Cameratown.com is prohibited.
Please email me with your suggestions or comments.