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Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D7100, D7000 (Public) topic #23561
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Subject: "RE: Manual focus question : What do focus lights mean?" Previous topic | Next topic
jbloom Gold Member Awarded for the continuous and generous sharing of his high level expertise and his always encouraging comments in several forums. Nikonian since 15th Jul 2004Wed 30-Jan-13 03:40 PM
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#1. "RE: Manual focus question : What do focus lights mean?"
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Wethersfield, US
          

Yes, that is a visual indication of what the autofocus system detects. It is evaluating the focus at the selected focus-point in the frame, so if you have objects in the frame at different distances, which focus point you have selected will determine which object's focus is being evaluated.

Because this uses the same circuitry as the AF system, it suffers from the same limitations. In particular, if the subject is one the AF system can't reliably focus on, the focus indicator will be unreliable as well.

If I were evaluating a lens for sharpness, I would use a tripod for the camera, a fixed, stable object as the target, and Live View as my manual focusing indicator.

-- Jon
Wethersfield, CT, USA
Connecticut High School Sports Photos

  

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A general, generic topicManual focus question : What do focus lights mean? [View all] , Omaha , Wed 30-Jan-13 03:15 PM
 
Subject Author Message Date ID
Reply message RE: Manual focus question : What do focus lights mean?
jbloom Gold Member
30th Jan 2013
1
Reply message RE: Manual focus question : What do focus lights mean?
Bravozulu Silver Member
31st Jan 2013
2
     Reply message RE: Manual focus question : What do focus lights mean?
briantilley Moderator
31st Jan 2013
3

Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D7100, D7000 (Public) topic #23561 Previous topic | Next topic


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