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Posted by Neil Smith [MVP Digital Media] on 11/10/06 22:13
Although there's a lot of well considered nay-saying going on,
sometimes you can get a little further with well considered lighting
and an appropriate chroma keying software.
I can't say for sure this will defeat garbage-in, garbage-out, but
even with pretty crappy footage I've played with serious magic's ultra
demo - it does offer weighted keying, so your screen may not be
perfectly flat or lit, you can still manage some fair degree of
keying.
http://www.seriousmagic.com/products/ultra/index.cfm
The free trial is several '00 megabytes and superimposes a logo, but
it's worth having a try just to see how well you can tune it compared
to a standard flat chromakey effect.
They do (or used to before acquisition by Adobe) often have specials
for residents of the USA/Canada - not Europe though - say 25% off at
xmas was one I saw a few times, so worth giving them a real email
address to keep in touch.
HTH
Cheers - Neil
On 10 Nov 2006 07:30:55 -0800, adric22@yahoo.com wrote:
>I'm trying to get some video work done in front of a green screen. I
>have been very dis-satisfied with the price of the screens I've seen in
>photography shops, so I decided to build my own. The fabric cost me
>about $5 and I built the stand and all for under $50.
>
>Here's the trouble. I can't seem to get a perfect key. Most of the
>problem seems to stem from uneven lighting on the screen. The only way
>I can light it evenly is from the front of the screen but then my body
>casts a shadow on it. I could possibly light it from the back, but I
>don't have enough room as the room I'm shooting this in is only 10 feet
>square. I'd need another 10 foot to place a bright light behind the
>screen and get even lighting. If I put the light beside or below the
>screen, then the light is at an angle and doesn't evenly light the
>screen.
>
>Another problem I'm having. My camera is an older, cheaper digital-8
>camera. It does not have a manual white-balance setting. So what
>happens is when the camera shot is totally green, the auto-white
>balance kicks in and desaturates the green. It is still green, but not
>as much as it should be. Any ideas to prevent this (short of buying a
>new camera?)
------------------------------------------------
Digital Media MVP : 2004-2006
http://mvp.support.microsoft.com/mvpfaqs
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