A Tiffen 95C (Coarse Thread) FL-B Filter is used to correct the color balance when shooting tungsten film under fluorescent lighting.

An FL-W filter is used to balance daylight film under warm white or white type fluorescent lamps. Tiffen FL-D filter is used when you wish to correct for the greenish tone that appears when shooting daylight film under general purpose fluorescent lighting. 

Fluorescent lamps burn at many different temperatures and often require more demanding filtration for exact results. For specific filtration and professional use, it is strongly recommended that a color temperature meter be employed along with Color Correction filters (i.e.CC30M) when shooting under fluorescent lighting. This is the only proven way to achieve exact color correction.

Converts Tungsten to Daylight    ColorCore Glass

Pleasing skin tones under fluorescent lighting without flash

True-to-life color rendition

Essential in any environment where ambient light source is fluorescent

Related Questions and Answers

Q: 1. Will this fit on my 5000 Stella?

A: This will not fit the Stella 5000

Q: 2. can these be used to warm up par 38 led bright white floods?

A: Yes these CTO filters can be used to warm an LED light source with a cooler color temperature.

Q: 3. Is the front of this filter threaded so I can stack another filter to it?

A: Yes

Q: 4. Are these heat resistant?

A: They are heat resistant to some extent. However, it's recommended to allow for at least 2-3 inches of air space between the gel and the light.

Q: 5. can you stack these filters ?

A: Yes, these filters can be stacked.

Q: 6. Does anyone know the approximate Kelvin temperature of the FL-W filter?

A: The Hoya FL-W Fluorescent Hoya Multi-Coated (HMC) Glass Filter for Daylight Film covers a temperature range around 2700-3000K.

Q: 7. I have seen in the description that it converts Tungsten to Daylight. Can they do the reverse?because I have a Daylight LED that I want to turn to tungsten. Or do I have to buy a different pack?

A: This filter kit includes CTO filters which will convert a daylight source to a tungsten balanced source. This can be any daylight source, LED or otherwise.

Q: 8. After figuring my exposure settings, do I need to add another stop for the filter?

A: Not if you're using your camera's light meter.

Q: 9. Are the filters marked as 1/8, 1/4, 1/3, 1/2, 3/4 and full CTB? If not is it clear that these values are included in this collection?

A: The gels are marked with a label. Included in the kit are: 2 x 720 Durham Daylight Frost 2 x 203 Quarter CT Blue 2 x 201 Full CT Blue 2 x 218 Eight CT Blue 2 x 202 Half CT Blue 2 x 200 Double CT Blue

Q: 10. can these be used on a 650w or 1000w tungsten fresnel light?

A: Yes you can if you attach it to the barn doors