eddiefisher
TPF Noob!
- Joined
- Mar 23, 2008
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Hey Guys.
Thought id post this on here seeing as i had 150 views but zero responces to my post on another forum!
Next month i will be doing an IR set in the studio.
I have the Cokin IR 89B filter and plan on using Kodak IR film or the not so true Ilford SFX 200 film. The Kodak has not gone upto £17 per roll after it was discontinued.
My question is does anyone know exactly how many stops the 89B will reduce my exposure? Ive heard 5 or 7 stops but dont want to waste the whole studio session with bad exposure.
When im in the studio i usually use my 85 and 50mm f1.4 primes and usually use ISO100, 1/160 and about f8. In terms of exposure im guessing that shutter speed is out the window here as its studio strobes. Should i be using f1.4 which is 5 stops compensation? Id rather bump up the film ISO to perhaps 400 so that i can use an apperture of f2.
I do however have the option of using more lights, the studio is quite well equiped so i could double up lights in the lighting rig and use them on full power, probably about f32 in terms of light output.
Any thoughts?
I unfortunatly wont have access to the studio to do a test with a roll of film as i rent the studio.
Thanks.
Ed
Thought id post this on here seeing as i had 150 views but zero responces to my post on another forum!
Next month i will be doing an IR set in the studio.
I have the Cokin IR 89B filter and plan on using Kodak IR film or the not so true Ilford SFX 200 film. The Kodak has not gone upto £17 per roll after it was discontinued.
My question is does anyone know exactly how many stops the 89B will reduce my exposure? Ive heard 5 or 7 stops but dont want to waste the whole studio session with bad exposure.
When im in the studio i usually use my 85 and 50mm f1.4 primes and usually use ISO100, 1/160 and about f8. In terms of exposure im guessing that shutter speed is out the window here as its studio strobes. Should i be using f1.4 which is 5 stops compensation? Id rather bump up the film ISO to perhaps 400 so that i can use an apperture of f2.
I do however have the option of using more lights, the studio is quite well equiped so i could double up lights in the lighting rig and use them on full power, probably about f32 in terms of light output.
Any thoughts?
I unfortunatly wont have access to the studio to do a test with a roll of film as i rent the studio.
Thanks.
Ed