The Tiffen 3 x 4" 85C Color Conversion Filter helps to decrease the color temperature from 5500 to 3800K, allowing the use of tungsten-balanced film in daylight conditions. The warming effect of this filter requires a 0.3-stop increase in exposure for normal results.

This filter is made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch. It measures 3 x 4" / 76.2 x 101.6mm.

Warming Color Conversion Filter    5500 to 3800K Color Temp Decrease    ColorCore Technology

Color conversion filter decreases color temperature and provides a warming effect.

Converts 5500 to 3800K for using tungsten-balanced film in daylight conditions.

Filter factor of 1.3 requires a 0.3-stop increase in exposure.

Related Questions and Answers

Q: 1. Hi - are these made of plastic or glass ? Thanks.

A: The Kodak 4 x 4" 85C Wratten 2 Optical Filter is made from a gelatin material.

Q: 2. What's the difference between this item and B&H#LE204R1? Are they the same item?

A: Both filter rolls have the same correction in mind, but B&H # LE204R1 comes on a smaller 1" core.

Q: 3. I want know how many lens & body can fit in this case.

A: The RucPac Hardcase Backpack Conversion is just the straps for the RucPac Hardcase.

Q: 4. Do the wheels still work when the rucpac is installed in the Pelican Case?

A: No

Q: 5. Will this work with the 1485 air case or the 1535 air?

A: Yes it fits all the pelican air cases perfectly, just as long as the case has wheels it will fit

Q: 6. I saw that this is also sold with a 1" core. What size of core is this one?

A: A 1" core is also used for this filter roll.

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. anyone tried attaching to the bottom handle instead of the wheels? I imagine this way you could roll or carry at any time

A: Hello Mark F,I bought two of these as I thought is was a perfect idea.In my work I use many different Pelican Cases every day and the idea of a back-packable 1510 seemed brilliant. Alas....I've tried to use these straps as the instruction say, I've tried all sorts of mods, longer screws with a D-ring, drilling holes for the straps, etc, but there really is not an effective and easy way to attach the bottom straps other than over the wheels. If you do finally get them attached that way the straps will slip off the side of the wheels and get bunched up in the area and become very difficult to undo. IMHOI wish Pelican would take this idea and do it right. All the best!Julian

Q: 9. What's the difference between this time and B&H#LE204R1 ? Are they the same item?

A: LE204R1 is a 1" core. This one has a standard sized core.

Q: 10. How do these hold up compared to brands like LEE or ROSCO?

A: These are all very similar gels that will hold up to heat.