Using Daylight Balanced Film with Blue Filters
Posted 15 February 2008 - 06:24 PM
I was wondering if I need an exact 80A/CTB gel or if I can use any approximate blue gel in this filter? I have a Blue gel that has a label on it reading 201....would that work for color temperature better than just shooting the film without it? Also, is it really necessary to use these conversion filters if in the end I'll be telecining the film and color correcting in Premiere Pro? I've never shot on film, so I don't know if the color temperature is something that can be remedied in post if I get it wrong on set.
Also, if I use a filter behind the lens (and it doesn't have a filter factor on the label)...should I take my meter readings with a gel over the lumisphere?
Thanks for any information....I've been getting some very helpful responses ever since I joined this board...thanks for everything.
Posted 15 February 2008 - 06:32 PM
you can just gel your lights with CTB, which will probably result in a sharper and cleaner image since you won't be placing any filter behind the lens.
Posted 15 February 2008 - 08:44 PM
Posted 16 February 2008 - 04:31 AM
I'd just use 1/2 CTB on the tungsten lights, let it be a little warm on the negative, and correct it in timing the transfer or print by shooting a grey scale first under the half-corrected light. A full 80A correction on the lights or camera is really too much exposure/output lost (two-stops, turning 250 ASA into 64 ASA if done on the camera.)
Hope I'm not hijacking this thread too much but I really like this idea David!
I actually like cinematography that is a little on the warm side anyway, like say shooting through an 81b filter or something. I'm wondering if the result of shooting like this with 1/2 CTBs and NOT colour correcting, would be too extreme. I know this is a matter of preferance but there surely comes a point where it just looks wrong for anyone and anyway I'd be intrested in hearing your opinion.