Green Screen

rambo7 · 8th of December 2008 (Mon)

I am curious if any one has experience with green screen. We are shooting portraits on green screen and getting an anomoly around red items on the green bg. Has anyone seen something like this or a way to avoid it?

FlyingPhotog · 8th of December 2008 (Mon)

How are you lighting this? And how are you post processing the images?

Chromakey really works best when you can get broad, even light accross the entire background and run it about 1/2 to 1 stop over your subject.

Got any examples of the anomoly? You don't list your gear but you might have a Chromatic Aberration issue (aka CA)

rambo7 · 8th of December 2008 (Mon)

Our gear is 40D with 28-135mm canon. Using a very simple broad light sorce. We don't have any problems dropping out the background on any color but red. Sorry I can't load any examples our firewall prohibits images leaving the building. We use 3 different software for the drop out but that is all controled by IT department. In the last 3 months we have shot 600K images on green and ,other than green clothing, red clothes have given us the most trouble. Since we are now shooting lots of pictures with Santa I was hoping someone had seen this kind of issue.

tony47ch · 26th of December 2008 (Fri)

nice to meet you all.

LORAC · 2nd of January 2009 (Fri)

Most greenscreen problems occur when thesubject is too close to the background. Keep em 6 ft away if you can.

8th of December 2008 (Mon)	#1
rambo7 Member Join Date: Nov 2008 Location: Missouri Posts: 54 IMAGE EDITING OK	Green Screen I am curious if any one has experience with green screen. We are shooting portraits on green screen and getting an anomoly around red items on the green bg. Has anyone seen something like this or a way to avoid it? __________________ Rambo7 "Consistency is the last refuge of the unimaginative." Oscar Wilde Nikon D300 Canon 40D-50D-5D Lenses from 14mm to 300mm flash equipment yeah i got that.

8th of December 2008 (Mon)	#2
FlyingPhotog Cream of the "Prop" Join Date: May 2007 Location: Probably Chasing Aircraft Posts: 57,025	Re: Green Screen How are you lighting this? And how are you post processing the images? Chromakey really works best when you can get broad, even light accross the entire background and run it about 1/2 to 1 stop over your subject. Got any examples of the anomoly? You don't list your gear but you might have a Chromatic Aberration issue (aka CA) __________________ Jay Crosswind Images *Facebook Fan Page* "If you aren't getting extraordinary images from today's dSLRs, regardless of brand, it's not the camera!" - Bill Fortney, Nikon Corp.

8th of December 2008 (Mon)	#3
rambo7 Member Join Date: Nov 2008 Location: Missouri Posts: 54 IMAGE EDITING OK	Re: Green Screen Our gear is 40D with 28-135mm canon. Using a very simple broad light sorce. We don't have any problems dropping out the background on any color but red. Sorry I can't load any examples our firewall prohibits images leaving the building. We use 3 different software for the drop out but that is all controled by IT department. In the last 3 months we have shot 600K images on green and ,other than green clothing, red clothes have given us the most trouble. Since we are now shooting lots of pictures with Santa I was hoping someone had seen this kind of issue. __________________ Rambo7 "Consistency is the last refuge of the unimaginative." Oscar Wilde Nikon D300 Canon 40D-50D-5D Lenses from 14mm to 300mm flash equipment yeah i got that.

26th of December 2008 (Fri)	#4
tony47ch Junior Member Join Date: Dec 2008 Posts: 1	nice nice to meet you all. __________________ DVD

2nd of January 2009 (Fri)	#5
LORAC Member Join Date: Jun 2007 Location: UK Posts: 113 IMAGE EDITING OK	Re: Green Screen Most greenscreen problems occur when thesubject is too close to the background. Keep em 6 ft away if you can.

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