Chroma Shooting for XL1s! at DVinfo.net

Amr Toukhy · February 17th, 2003, 03:49 PM

Any sucsses story regarding this topic :)
Any links for postings on-line,

Thanks again and agian :)
Amr

Jeff Donald · February 17th, 2003, 09:44 PM

What do you mean by Chroma Shooting? Tips for shooting in Color vs. Black and White?

Jon Eriksson · February 18th, 2003, 04:30 AM

I would assume he means shooting for a chroma key. The simple answer is that it has got very little to do with the camera you're using. You need to light the background perfectly and have enough space in the room/studio to be able to move your subject away from the background. If they're too cloose you'll get spill on the hair/shoulders which will make it very noicy once the key is put in. The background must be evenly lit and have a good colour saturation - if you fail with lighting you will have a nightmare in post.

You also need a decent post tool to be able to get a good key.

I am sure there has been topics about this issue before, so use the search tool to find more.

Regards
Jon

Amr Toukhy · February 18th, 2003, 05:24 AM

Thanks Guys,

Now i totally understand, what you mean, the KEY is the lighting of the Blue-Box room, ot in the XL1s.

Thanks,
Amr

Mike Doyle · February 27th, 2003, 10:08 AM

Earlier responses are exactly right. Here are some details that helped me immensely. Lighting of the background must be as even as possible and should be at the same level as the light hitting your subject. Sufficient separation between the subject and background is critical. If light reflecting from the background illuminates the subject you will have a hard time eliminating the fringe of color around the subject. Adding a slight backlight or rim light to your lighting of the subject will also help. Be patient. The more time you take setting up the less time you'll take creating the key in post.

Rick Spilman · February 27th, 2003, 10:26 AM

One other often over looked element in chromakeying is the editor you use.

DV25 is a 4:1:1 color space which makes a good key tough. Several NLEs bump up the color space to 4:2:2 for color correction and keying. I have a Canopus RexRT which interpolates up to 4:2:2 and I understand several of the Matrox cards do the same. It can make a huge difference.

Robert Poulton · February 27th, 2003, 12:19 PM

Goto www.dvgarage.com
They have, which I own, a package called composite toolkit. While it might not be right for you. That is if you dont own After Effects. It still provides needed information about dealing with greenscreen material such as: garbage matte, greenscreen removal and spill removal. The plug-in that comes with the package is called DVmatte. Easy to use and pulls great mattes the first time.

Rob:D

February 17th, 2003, 03:49 PM	#1
Amr Toukhy Regular Crew Join Date: Nov 2002 Location: Amman-Jordan Posts: 112	Chroma Shooting for XL1s! Any sucsses story regarding this topic :) Any links for postings on-line, Thanks again and agian :) Amr

February 17th, 2003, 09:44 PM	#2
Jeff Donald Warden Join Date: Mar 2002 Location: Clearwater, FL Posts: 8,287	What do you mean by Chroma Shooting? Tips for shooting in Color vs. Black and White? __________________ Jeff Donald Carpe Diem Search DVinfo.net for quick answers \| Where to Buy? From the best in the business: DVinfo.net sponsors

February 18th, 2003, 04:30 AM	#3
Jon Eriksson Regular Crew Join Date: Aug 2002 Location: London, UK Posts: 42	I would assume he means shooting for a chroma key. The simple answer is that it has got very little to do with the camera you're using. You need to light the background perfectly and have enough space in the room/studio to be able to move your subject away from the background. If they're too cloose you'll get spill on the hair/shoulders which will make it very noicy once the key is put in. The background must be evenly lit and have a good colour saturation - if you fail with lighting you will have a nightmare in post. You also need a decent post tool to be able to get a good key. I am sure there has been topics about this issue before, so use the search tool to find more. Regards Jon __________________ Real Men do not Preview

February 27th, 2003, 10:08 AM	#5
Mike Doyle Regular Crew Join Date: Dec 2002 Location: Sacramento, CA Posts: 32	Shooting for keying Earlier responses are exactly right. Here are some details that helped me immensely. Lighting of the background must be as even as possible and should be at the same level as the light hitting your subject. Sufficient separation between the subject and background is critical. If light reflecting from the background illuminates the subject you will have a hard time eliminating the fringe of color around the subject. Adding a slight backlight or rim light to your lighting of the subject will also help. Be patient. The more time you take setting up the less time you'll take creating the key in post.

February 18th, 2003, 05:24 AM	#4
Amr Toukhy Regular Crew Join Date: Nov 2002 Location: Amman-Jordan Posts: 112	Thanks Guys, Now i totally understand, what you mean, the KEY is the lighting of the Blue-Box room, ot in the XL1s. Thanks, Amr

February 27th, 2003, 10:26 AM	#6
Rick Spilman Major Player Join Date: Dec 2002 Location: Jersey City, NJ Posts: 366	One other often over looked element in chromakeying is the editor you use. DV25 is a 4:1:1 color space which makes a good key tough. Several NLEs bump up the color space to 4:2:2 for color correction and keying. I have a Canopus RexRT which interpolates up to 4:2:2 and I understand several of the Matrox cards do the same. It can make a huge difference.

February 27th, 2003, 12:19 PM	#7
Robert Poulton Major Player Join Date: Nov 2002 Location: Portland, OR Posts: 245	Goto www.dvgarage.com They have, which I own, a package called composite toolkit. While it might not be right for you. That is if you dont own After Effects. It still provides needed information about dealing with greenscreen material such as: garbage matte, greenscreen removal and spill removal. The plug-in that comes with the package is called DVmatte. Easy to use and pulls great mattes the first time. Rob:D