A Tiffen FL-B filter is used to correct the color balance when shooting tungsten film under fluorescent lighting. 

This filter is glass and measures 100 x 100 mm (4x4") x 4 mm thick.

NOTE: The FL series of filters alone does not always guarantee 100% correct color balance when shooting under fluorescent lighting. They are general purpose filters intended for moderate correction and will not, by themselves, necessarily provide perfect color rendition.

An FL-W filter is used to balance daylight film under warm white or white type fluorescent lamps. An 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.

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. Can you use this without the rails adapter as a clamp-on?

A: You cannot. This Matte Box is for 15mm rods only.

Q: 2. Ikan's website says the following Additionally, you get four lens adaptors (72mm, 80mm, 90mm, 114mm) however there is no mention of the 114mm adaptor on B&H. To add to my confusion Ikan state in their specs that the largest lens for matte box is 100mm. Will this mattebox fit on a 114mm lens?

A: Good question. To clarify this, The MB-T05 comes with 2 lens adapters:80mm95mmThe Donut ring measured out to be 110mm. When you remove all accessories, the MB-T05 has a lens diameter of 114mm. So the MB-T05 only has 5 options:Nuns Knickers80mm95mm110mm114mm

Q: 3. I have a Digital Bolex on a zacuto recoil and a titla ff, will this work with it?

A: Adan, we don't have those to try in-house, but, so long as your equipment is compatible with 15mm LWS, you should be good to go!

Q: 4. Hi. Do any of the two Filter stages rotate to accommodate a Polarizer or a Grad filter? Can't seem to tell from the specs/photos. Thanks!

A: The 2nd stage, One closest to the lens rotates. The front stage does not. Hope this helps !

Q: 5. Will this be wide enough for a Fujinion ha13x4.5berm-m48 2/3? can somebody replay asap as I emailed B&H day ago now and no reply.

A: Sorry for the delay, it least on our side, we were attending/are now recovering from NAB in Vegas. No, it does not work, since his lens has a diameter of 127mm, and the MB-T05 only goes up to 100mm

Q: 6. Can I use the clamp on to a 114mm Xeen Lens?

A: 114mm is the maximum lens diameter that can fit into this matte box.

Q: 7. Is the filter a flexible gel or a rigid material?

A: This is a rigid, acrylic Tungsten Filter. The exact specifications are: Optically clear acrylic panel. Converts 5500 degrees Kelvin to a nominal 3200 degrees Kelvin.

Q: 8. Who is the manufacturer of the ND? Is it Tilta?

A: Tiffen is the manufacturer of the Tiffen 4 x 4" ND 0.6 Filter (2-Stop) included in the Tilta 4x4" Tilta Lightweight Mattebox with 0.6 ND Filter Kit.

Q: 9. Will this fit on a fujinon ha13x4.5berm-m48 2/3?

A: The Fujinon 13x4.5BERM has a 95mm front. The Tilta comes with 80, 95, and 110mm Diameter Lens Adapters. Use the 95mm to clamp-on the matte box. I would suggest using a 15mm LWS for this mattebox for easier use.

Q: 10. This can work with lens SIGMA 18,35mm ? Blackmajick 6K ? All of my lens it's Sigma's! Let me know plz

A: The Tilta 4x4" Lightweight Matte Box will work with any lenses that are 114mm or less in diameter.