auto focusing question


#1
Hi,


http://www.flickr.com/photos/61661287@N06/5610086506/

i am just trying to test the whether my camera focusing is working properly.

i using manual focus at center, 50mm f1.8.

i point at the "50mm" center point of focus(position around "0"). after that half press shutter release to auto focus, and take shot.

but the result is that "60mm" is much more in focus compared with 50mm..

any comment on this?
:)
 

Last edited:

Diavonex

Senior Member
Sep 23, 2008
3,641
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0
Admiralty
#4
You should use Spot Focus when doing test like this.

There are generally 3 different modes:

1. Multi-point

2. Center Focus

3. Spot Focus
 

android17

New Member
Sep 27, 2009
945
0
0
#6
When testing for front/back focus issues:

mount ur camera on a tripod, set timer (or if u hv shutter release cable u can use that) to reduce vibrations.

If u handheld, it will not be accurate due to the extremely shallow DOF.
 

rhino123

Moderator
Staff member
Sep 1, 2006
5,243
15
38
NA
#9
Have u mount your camera on tripod?
 

rhino123

Moderator
Staff member
Sep 1, 2006
5,243
15
38
NA
#11
You would need to check, if all constraint is the same... also, do you press the shutter directly on your camera, or use a remote control? Because when you press directly on your camera, even if your camera is mounted, there might still be some movement in your camera.
 

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