Would a magenta filter work for increasing contrast...

[Steven Ruttenberg]

I used them in the past with film when I was shooting 35mm in doors under fluorescent lighting. Worked great, don't remember any issues, but that was almost 20 years ago. Don't remember paying much for it.

[Bob Salomon]

I used them in the past with film when I was shooting 35mm in doors under fluorescent lighting. Worked great, don't remember any issues, but that was almost 20 years ago. Don't remember paying much for it.

They were a combination of red and blue, how much depended on the manufacturer of the filter you used and the type of tubes used in the room. That particular combination will be very hard to duplicate and, if shooting outdoors, the K temp will be different.