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table of absorbing light of gels and filters

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Michel Domaine
table of absorbing light of gels and filters
on May 24, 2010 at 9:17:05 pm

Hi everybody!

i'm sorry for my english and if I didn't understand very well the forum rules. I beg you pardon.

Anyone of you knows where to find a table of how much any gel and filter absorb light?
I know it exists but I can't find it.

Thanks very much for the help!


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cowcowcowcowcow
Rick Wise
Re: table of absorbing light of gels and filters
on May 24, 2010 at 10:08:27 pm

You can go to the web sites of Rosco or Lee. Here is a table I worked up for my students about CTO and CTB gels:


Rick Wise
director of photography
San Francisco Bay Area
and part-time instructor lighting and camera
grad school, SF Academy of Art University/Film and Video
http://www.RickWiseDP.com
http://www.linkedin.com/in/rwise
email: Rick@RickWiseDP.com


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Dennis Size
Re: table of absorbing light of gels and filters
on May 24, 2010 at 11:39:49 pm

This is very nice Rick; and extremely helpful.
My personal favorite correction is the 3/4. Feel like adding it? :-)

DS



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Rick Wise
Re: table of absorbing light of gels and filters
on May 24, 2010 at 11:49:05 pm

Thanks, Dennis. Interesting. Mine is the half. I'll have to upgrade the table, but some time later. I'm jammed writing an online lighting class for the Academy. I am working hard to resist temptations such as your request because they take me from my appointed task, which is a gigantic time hole. But fun too.

Rick Wise
director of photography
San Francisco Bay Area
and part-time instructor lighting and camera
grad school, SF Academy of Art University/Film and Video
http://www.RickWiseDP.com
http://www.linkedin.com/in/rwise
email: Rick@RickWiseDP.com


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Dennis Size
Re: table of absorbing light of gels and filters
on May 24, 2010 at 11:59:14 pm

I totally understand.
I had to pull back on all my teaching and writing obligations several years ago because of the incredible time constraints.

DS



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Michel Domaine
Re: table of absorbing light of gels and filters
on May 26, 2010 at 4:53:06 pm

Thanks Rick!!

Very helpful!!

I'll go to see the site!! Would you post the link if it doesn't go against the rules of the site?

Thank you again!


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Rick Wise
Re: table of absorbing light of gels and filters
on May 26, 2010 at 6:12:44 pm

Michel,

I'm not sure what you mean by "go to the site." If you mean the site where my table is posted, that's restricted to only students in my lighting class. If you mean the sites for Rosco and Lee, google them. I think they are Rosco.com and Lee.com but I am not sure.

Rick Wise
director of photography
San Francisco Bay Area
and part-time instructor lighting and camera
grad school, SF Academy of Art University/Film and Video
http://www.RickWiseDP.com
http://www.linkedin.com/in/rwise
email: Rick@RickWiseDP.com


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Michel Domaine
Re: table of absorbing light of gels and filters
on May 26, 2010 at 6:25:00 pm

Yeah. I ment that.

I will google them.
Thank you.

I love this forum.

Michel


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Michel Domaine
Re: table of absorbing light of gels and filters
on May 26, 2010 at 7:07:51 pm

Wow Rick!

I was lloking now to your table and I discover that to convert a daylight I need an half CTO and I always use a FULL CTO!!

I have a lot to learn in lighting and photography...

Thanks again.


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Rick Wise
Re: table of absorbing light of gels and filters
on May 26, 2010 at 9:44:48 pm

A half CTO does not make a full conversion but it almost always plenty. In general, I find the using 1/2 the strength of either CTO or CTB, depending on which way I'm going, works great.

Rick Wise
director of photography
San Francisco Bay Area
and part-time instructor lighting and camera
grad school, SF Academy of Art University/Film and Video
http://www.RickWiseDP.com
http://www.linkedin.com/in/rwise
email: Rick@RickWiseDP.com


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