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Posted by Richard Crowley on 06/13/07 16:57
<Erickson.Jim@gmail.com> wrote ...
> New to all this and would appreciate help.
>
> We have a stage that has white drapes in the back with colored lights
> that shine on the drapes. On camera the colors are completely
> different than live. Yellow shows as green, etc.
>
> We have Hitachi cameras hooked to a Hitachi CCU and fed into a
> Panasonic MX-70 switcher. Camera has been white balanced. Color bars
> which the CCU generates seem ok.
>
> Also we have some big orange letters on stage and a person that stands
> in front of them for sermons. The person's skin tone looks orange on
> camera. Iris adjustments help somewhat but start washing out the
> person.
>
> If anyone has any ideas I would appreciate it. As I am new I don't
> really know exactly what everyone needs to answer these question so if
> more info is required I'll provide whatever you need.
There is more to balancing multiple cameras than simple white
(and black) balance. Typically we use a live "model" (or something
with representative "skin tone") and tweak all the cameras (via the
red and blue gain and pedestal controls on the CCUs) to look the
same when viewing the same face (etc.). Your very best monitor
should be used by the "camera shader" for this purpose. And this
"shader monitor" should be calibrated every year or two because it
is actually a piece of "test equipment" not just a "picture monitor".
Note, also that color cameras (both video and film) do NOT see
colors the same as our eyes do. There are many examples of things
(fabrics, etc.) that look very different on camera than they do to your
eyeballs. If you want things to look a certain way *on camera* then
you need to select paint colors, lighting gels, etc. by actually viewing
them *on camera*.
Assuming that the visual anomolies you are seeing are right out
of the CCU, and not something happening in your switcher, etc.
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