Jvc-gy-hd110 focus changes help me thanks !
i have JVC-HD110 camera WHY MY focus changes when i move the camera i mean when i zoom and focus and then i move the camera to something different .
the focus go out of focus any help thanks . |
a pro type lens needs to be re-focused when moving from 1 subject to another that is nearer or farther away than the original subject that was focused on. obviously there is no auto focus (that's worth using) on a pro lense. however it COULD be the backfocus is out
|
You must set your backfocus to get
the correct flangeback, on the other side some user switch on the makrofunction of the lens. The result due to the focus is the same like a wrong flangeback. |
my back focus is ok i know when my back focus is out so it is not the back foucs ?
|
what do you mean by switch on the makrofunction ?
|
When you use for minimum object-distances
the macro on your lens (on Fujinon you must switch a little plastic switch - on Canon-lenses you push and change in the macroarea of the lens), sometimes that will be forgotten when its only 1 mm on the macro. Then it looks like a incorrect flangeback (backfocus). |
Quote:
If you are referring to zoom in and focus and zoom out,the object you originally focussed on should remain in focus IF the backfocus is set correctly. The only exception would be if you had your iris stopped down too far (anything much above F5 for 1/3" chips, F8 OK at a pinch) - nothing will ever focus correctly then. It may "appear" to be in focus when zoomed in but it is not -it just becomes more apparent on wider shots. |
All times are GMT -6. The time now is 05:34 PM. |
DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network