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11/15/2006 01:07:50 PM · #1 |
Has anyone considered, researched or experimented with using the green screen so popular in cinema for the arena of still photography? Does it achieve the same "blank" slate for adding backgrounds? Does anyone have any links so I can understand more of the technical side of the idea?
Does green simply provide better contrast from the subject so it easier to cut it out? Just thinking out loud here...
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11/15/2006 01:18:59 PM · #2 |
Yes, people are doing it quite a bit in digital still photography. It's really an inexpensive way to add variety in your "backdrops" which you can buy on CD.
Chroma Key Backgrounds are a little pricey to start, but it seems they would quickly pay for themselves since you don't have to buy a lot of specialty backgrounds.
Chroma Key works by isolating the specific color of the background and replacing it with other data. You have to be careful to light it evenly and also to watch for spill of the color onto the subject.
I don't think I have any links, but I'll go check through my huge Favorites list... :-)
Message edited by author 2006-11-15 13:20:05.
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11/15/2006 01:20:42 PM · #3 |
| I made a Chroma Screen myself at home, belive me it is much better than just trying to shoot and image with background of any other color. |
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11/15/2006 01:26:05 PM · #4 |
Coming to photography from more of a video background, I can tell a little of what I've experienced.
Lighting the background evenly is very important. Any shadows will appear as black, which prevents you from keying it out.
If the subject is too close to the green background, a green cast is reflected on the subject, especially if they have lighter colored hair. I haven't tried this, but if you hit your subject with a pink hairlight, it will negate the green.
We have a Westcott chroma key green 10'x12' fabric panel and stands.
//www.fjwestcott.com/products/backgrounds/chroma.htm
Another option is paint. If you google Rosco Chroma Key Paint, you should find it. The cool thing there is you can paint objects and get more three dimensionsal coverage as opposed to just a background.
Scott |
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11/15/2006 04:47:22 PM · #5 |
Cutter,
Still or video, the principle is the same. It isn̢۪t as easy as it may seem though. The lighting and distance from bg are the same issues you have with selecting-out any bg.
For example, if light shines on bg and that color is reflected onto the hair of the subject you will have a problem. If shadow falls on bg there is a problem. If coloring of subject is close to that of bg you have a problem. Still, it can be done.
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11/15/2006 06:24:30 PM · #6 |
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