Silas Barker
December 3rd, 2010, 09:34 PM
Hello everyone,
Quick question:
I am wondering if you used the Canon 5D camera and made the greenscreen more out of focus if that would help when you key things out? I have both the Sony EX1r and the Canon 5D and will need to do some greenscreen work soon. A friend has Adobe After Effects (and Ultra I think too) so that is what I have to do it with. The shots will be of a male actor waist up and also full body shot. The goal is to composite him in a digital world for part of a film I am creating.
Any suggestions or comments are appreciated!
Thank you.
Robert Turchick
December 3rd, 2010, 10:19 PM
You get a cleaner key by starting off with a larger image. More pixels for the keying software to work with. This is done in a pre-comp in After Effects, and the pre-comp is then incorporated into the final comp.
Been doing that trick for a few years now. Works very well. Filling any cameras sensor with more info is always a good thing. Flip it and scale to whatever you need in post. Nice cause you can keyframe zooms and reframe in post.
Since I dont have a head that will do 90deg tilt, I bought a piece of L-shaped framing steel and drilled the appropriate hole for a QR plate system to mount to my tripod. Cost $3 plus $50 for the plates!
Vincent Oliver
December 4th, 2010, 03:11 AM
I have been using the Matrox cards for keying out green screens (RT100 + RTX2) these have worked OK for me, although they do leave a fair amount of dirty pixels on the green.
I have been experimenting with Adobes Ultra Keyer and this produces very clean keys. I have been using 720p 24 & 25fps with Cine1 gamma. I am just wiating for my new graphics card to arrive (nVidia GTX470) which will then take full advantage of the Mecury PLayback Engine. Will post some results as soon as I get it.
Barry J. Anwender
December 26th, 2010, 11:40 PM
If you're getting a full-body shot - try mounting the camera sideways (portrait mode) to get the maximum amount of pixels dedicated to your subject.
Kenn, thanks for thinking outside the box and sharing this idea. I had to wait for some free time to finally manufacture and test a camera plate for mounting my EX3 sideways. It works as you described to get the extra pixels on the subject. I can pull cleaner full body shots in almost half the distance. This innovation now allows me to take my Reflecmedia Chromatte screen into office environments for those times when full body shots are required. Cheers!
Mitchell Lewis
December 27th, 2010, 08:27 AM
Saw this at NAB two years ago. It's perfect for mounting our EX3 sideways.
RINGO HEAD CAMERA MOUNT (http://www.spidersupport.com/index.php?option=com_content&view=article&id=72&Itemid=76)
Spider Support Ringo Head. Sells for $380 from Barbizon Lighting.