The Tiffen 5x5" 80A Color Conversion Filterhelps to increase the color temperature from 3200 to 5500K, allowing the use of daylight-balanced film in tungsten-lit conditions. The cooling effect of this filter requires a 2-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 5 x 5" / 127 x 127mm.

Cooling Color Conversion Filter    3200 to 5500K Color Temp Increase    ColorCore Technology

Color conversion filter increases color temperature and provides a cooling effect.

Converts 3200 to 5500K for using daylight-balanced film in tungsten-lit conditions.

Filter factor of 4 requires a 2-stop increase in exposure.

Related Questions and Answers

Q: 1. How many sheets are included?

A: One sheet is included.

Q: 2. Will this melt if I put it next to my speed ring on an Arri 1k open face?

A: These gels are heat resistant but will eventually fade and distort. I've only seen them melt when in direct contact (or very near proximity) with a halogen lamp. I think you'll be ok for awhile if the gel is on the outside of a lensed speed ring. Maybe check for sure with Rosco or Lee.

Q: 3. Is it original HP 80A?

A: Yes. This is an original HP product.

Q: 4. Will it fit Nikon 3300.?

A: This filter will fit any lens with 37mm threads

Q: 5. Hi with this filter can i put my rolleiflex lens hood on top? Thanks

A: Yes. It has a Bay 1 front so you can attach the hood.

Q: 6. Is this the 'darkest/deep blue' version they have? Last blue gel I got (Lee 201 and 202) was far too 'white' for what i'm looking for. I want a deep blue

A: CTB is a correction gel it is not meant for adding color. If you want a rich blue color Primary Blue https://bhpho.to/31L7fky would be a good option.

Q: 7. Hello! I am trying to take my 3000 K landscape light to a more warmer light like a 2700-2,500 K, like a regular halogen color. What would the 1/8. 1/4 and 1/3 get my Kelvin to? I bought the 223 1/8 but that didn't do much. Thank you!!

A: Full CTO will move the color temp from 5,600k to 2800k. 3/4 will do 5,600k to 3,200k. Smaller levels will do proportionally less.

Q: 8. What size is this in terms of lens diameter?

A: This filter is 4.5 inches

Q: 9. 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.

Q: 10. 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.