The Tiffen 86mm Coarse Thread CC40R Red Filter is a color compensating (or color correction) filter for use when making color balance adjustments. It can be used to alter the color balance of a scene by placing in front of a light source or the lens of your camera. It can also be used to apply color corrections when used in the darkroom with an enlarger or to help pre-visualize color adjustments when viewing prints.

Red is the opposite of cyan and can be used to reduce cyan tones or casts within a scene or print. This red CC40 is more dense than a CC30 filter and less dense than a CC50 filter, and requires a 0.6 stop compensation for normal exposure results.

Tiffen filters are made using ColorCore technology; a process that involves laminating the filter substrate between 2 pieces of optical glass, grinding flat to a tolerance of 1/10,000th of an inch, then mounting to precision metal rings.

CC40R Color Compensating Filter    1.5x Filter Factor, +0.6    Achieve Proper Color Balance    Alter Color Balance    Useful for Printing and Viewing    ColorCore Technology    86mm Front Filter Threads    Plastic Case

Red color compensating filter for use when making color balance adjustments.

Red is the opposite of cyan and is added to reduce cyan tones or color casts within a scene or print.

This filter has a nominal peak density of 0.40, and a 1.5x filter factor, requiring a 0.6 stop compensation.

Plastic filter case for storage and transport.

Related Questions and Answers

Q: 1. Is this filter equal to a 25A red?

A: It comes close, this filter is a bit lighter and has a bit more orange in it but for the most part it will do a similar job to the 25A.

Q: 2. Are the filter rings for the Master series still brass as they were on the XS-Pro series? I noticed that B&H makes no reference to this in the listings.

A: Yes the B+W Master Series still offer a brass ring.

Q: 3. 1/4"? 1/4" what? UNC or UNF? Looks like UNC which is 1/4"-20. Is this correct?

A: The Matthews Clip with 1/4" Thread has a 1/4"-20 male thread

Q: 4. nikon z 14-24?

A: Yes, the following filter will work with the Nikon z 14-24 unit.

Q: 5. Is there a version of this filter without the knurling around the outside? The knurling prevents me from installing a screw on lens hood on my summilux 35mm. I have an older B+W F PRO that is smooth on the outside edge that the lens hood can fit over but I can't seem to find that model anymore.

A: The B+W T-Pro has the same quality but no knurling: https://bhpho.to/3RpIBi7

Q: 6. Will this filter work fine on a Canon RF 15-35mm ultra wide angle zoom lens without getting in the way?

A: The B+W UV-Haze #010 MRC MASTER Filter (82mm) can be used on the Canon RF 15-35mm lens without affecting the image in any way.

Q: 7. What do you attach this to? Suggestions would be useful in the accessories section.

A: This clip is made for use with the Matthews MICROgrip Basic Kit, BH # MAMGBK https://bhpho.to/3owfegE

Q: 8. Will this fit a Yashica mat 124 G?

A: Information on that model reads that it uses a Bay 1 not a bay 2 filter. So, the bay 1 version is, https://bhpho.to/3hj1yV7

Q: 9. Are there front mounting threads on this filter?

A: Yes, all B+W UV filters have front threads that matches the back screw size. You can use an 82mm lens cap on the B+W UV-Haze #010 MRC MASTER Filter (82mm).

Q: 10. I am about to get Canon 400 f5.6. Would this be the best filter for the lens. Are there better options? (Is Hoya UV + IR a better option)?

A: Yes. Great filter for the following lens combo.