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Re: AGC still adjusting even in manual iris

COW Forums : Sony NXCAM

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john lenihanRe: AGC still adjusting even in manual iris
by on Apr 24, 2012 at 12:22:50 am

John,
I believe your issue is that the camera has variable manual settings.

First step is to make sure you have your data display turned on. If not, you can do it in the menus.

If it is turned on, you will see three numbers on the bottom of the viewfinder.
iris/aperature Gain speed/time/exposure


These will each have a legitimite number on them, like 1.8 for aperature, 0db for gain, and 60 meaning 1/60 of a second.

Now, if you have the slide lever on the left side of the camera set to auto, then all three of these numbers will be prefixed with the letter A which means automatic.

If you switch the slide switch to the manual setting, then at first the three numbers will still be in automatic evidenced by the A.

If you tap the iris button, it will toggle to manual iris, removing the A, and enabling the iris ring. The gain and exposure will still say auto and will try and get the "best picture"given the manual iris.

If you tap the shutter speed button, the A will dissappear, and it will enable the roller wheel near the menu button. You can dial in the shutter speed you want. The camera will still try and get the best picture using the only option it has, which is gain.

If you tap the gain control button, the A is removed and the three positin gain swith is enabled for you to set the gain manually.

So, you can manually control 1, 2, or all three. But only by controlling all three can you keep it from trying to get the best picture by itself.

See if this helps.

John Lenihan

John Lenihan

LeniCam Video Productions
http://www.lenicamvideoproductions.com


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