The Tiffen 5x5" CC40R Red Filteris 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 and grinding flat to a tolerance of 1/10,000th of an inch. This filter measures 5 x 5" / 127 x 127mm.

Color Compensating Filter    Achieve Proper Color Balance    Also for Printing and Viewing Use    ColorCore Technology

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.

Related Questions and Answers

Q: 1. Nisha Bay 1 - correct filter for a Yashica Mat 66, right?

A: Yes this is the correct size.

Q: 2. Does this filter have SH-PMC coating?

A: No, the Heliopan #25 Light Red Filter does not have SH-PMC coatings.

Q: 3. How much light is lost by using this filter?

A: There is extremely minimal light loss with this filter.

Q: 4. Will this fit Hero 4?

A: Yes, it is the same housing as the 3+

Q: 5. Will this fit the sjcam4000 camera housing?

A: Hi B&H,We bought the red filter for the Go Pro Hero 4 silver camera which has its own housing, and fits perfectly. But do not recall whether Hero 4 silver is the same/compatible model outlined below.Regards,

Q: 6. I have 4x4 plain ND filters by adding this IR glass on matte box will my plain ND filters work like IRND filters, or I need to buy all IRND filters to block Infrared?

A: Yes, that combo will give you an IRND effect.

Q: 7. 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: 8. Will 680nm to 800nm work well on a Blackmagic Pocket Cinema Camera? I used a 750nm IR cut and it still produced a very red image. Possibly thinking the BMPCC is more sensitive to light on the lower end (680nm) so was thinking about checking this filter out. Any info?

A: It would seem no one else has tried this idea. It sounds as though it might work. Try it and let us know what happens.

Q: 9. Compatible with yashica mat 124g?

A: This is Bay 1 mount , double check I believe yashica mat 124g is also Bay1

Q: 10. What is the Wratten number for this filter?

A: Unfortunately the Nisha 77mm Red Filter does not have a Wratten Number.