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Posted by Richard Crowley on 06/07/06 01:45
"Reza" wrote...
> Perhaps you noticed that I am new to digital video. Your suggestions
> are being so helpful to me. I have few more questions about Canon
> XL-2.
>
> I would greatly appreciate your advice.
> (1) How do I increase or decrease aperature size to control depth of
> field? Is it IRIS?
Yes, it is "iris".
Note that people most frequently use neutral-density
("ND") filters over the front of the lens to reduce the
amount of light so you can open the iris while maintaining
the proper exposure for the video.
> (2) What should be normal shutter speed for 50 frame and 25 frame
> mode shooting ?( I have PAL version of XL2).
I would need a really good reason to not use the camera's
default.
> (3) In what situations I need to lock the exposure?
For artistic reasons where your shot moves between
bright and dark (or vice-versa). Where you want to hold
the exposure for the dark area, but allow the bright area
to "blow out" because it is not important (or vice-versa)
etc. etc. Likely many other examples.
> (4) In what situations I need to use AE shift ?
I'm not familiar with the "AE shift" on your camera.
Nothing beats "playing" with it when you don't need to
shoot critical video.
> (5) If I shoot in 50 frame and capture the video in 25 frame mode
> (adobe premier pro will not capture in 50 frame mode), will I loose
> video quality?
Not clear why you would want to do that?
> (6) In what frame mode (50, 25) most of the documentary vidoes are
> shot.
I would need a really good reason to not use the camera's
default.
> (7) In what situtations I may need to use gain?
Usually in cases where you don't have enough light for
"normal" exposure.
> (8) Why manual focus is preferred to auto focus by the pros?
Because "auto" focus doesn't know what the critical thing
is to focus on.
> If I use manual focus, don't I need to keep on adjusting
> focus during the recording as my subjects walk or change
> position?
Good luck, you will need it.
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