what gel?

It depends on what color temperature your fluorescent fixture is.

Fluorescent bulbs come in all different color temperatures.
 
Basically im shooting a commercial in a lawyers library that is filled with florescent fixtures. My guess would be 4100K.
 
lairhair said:
Basically im shooting a commercial in a lawyers library that is filled with florescent fixtures. My guess would be 4100K.
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I would get in there and see what the light looks like when using the 3.2K preset to get a better idea -
but assuming you're going to 4100K you'll need some green gel,
LEE 243 will take you to 3600K, so doubled up you should get pretty close to 4100K.

Or you could go with a 1/2 CTB which should land you a bit above 4100K (roughly around 4300K or so).

But like I said - I would go in there and check out the quality of the light to make certain.
Will there be any daylight spilling into the room?


EDITED TO ADD:
Drew is right, check the bulbs directly if you can.
That's the easiest way to know what you're dealing with.
 
They are covered by those plastic sheet things so I wont be able to check them. I have shot 2 videos in there so far for his website without balancing my tungsten lights. Its just a little sloppy so I want to do it right.
 
If you mean the lights are recessed in a false ceiling,all you have to do is push the clear light panel up and move it over to look at the fixture.
 
Assuming your talking about practical florescent lights, The gel you want is a Plus Green (or window green), once you match color temp, you can add the plus green. (or you can use minus green gels on all of your practical florescents.) They come in different strengths but I would recommend the lower strength, just get a few and you can stack them to make the effect more prominent until you get the look you want.
 
If you can't get to the bulbs, talk to building maintenance. They probably re-order the same bulbs all the time and have spares in their supply closet.
 
why do we call it "minus green"? we don't call ctb minus orange. we don't call cto minus blue. why are we racist against magenta?
 
Video cameras are not as sensitive to the green spike in flo's as film cameras. A color tempertue meter can give you correct settings for shooting film but it won't be accurate for video. Use your monitor.
 
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