The Tiffen 3x3" CC20B Blue 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.

Blue is the opposite of yellow and can be used to reduce yellow tones or casts within a scene or print. This blue CC20 is more dense than a CC10 filter and less dense than a CC30 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 3 x 3" / 76.2 x 76.2mm.

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

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

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

Related Questions and Answers

Q: 1. How much vignetting would this lens have on a tokina 11-16 lens on a Nikon D7200?

A: Your camera body is not full frame and has a 1.5x magnification factor. As a result your 11-16mm lens when used on this body is essentially a 16.5mm -24mm lens. There should be no vignetting given these focal lengths when using a standard CP filter. However, if you are concerned Tiffen does make a low profile filter to avoid vignetting: https://www.bhphotovideo.com/c/product/163451-REG/Tiffen_77WIDCP_77mm_Circular_Polarizing_Wide.html

Q: 2. im looking for a Cavision rig like these for my sony a6000 with mattebox and room for follow focus, will this model work? and if not, which model should I buy

A: Hi Dave,I must sat that the 3x3 matte box from Cavision works very well with my Panasonic GH3. It is very sturdy and light weight. I can't say fro sure that it will work with the Sony a6000, however, if I had to guess I will say yes. If is a standard size mounting shoe then yes. I am very happy with this item. I hope this helps.

Q: 3. Will this filter fit for Sony E-mount 16-50mm Lens?

A: You chose well for indeed it will fit the Sony E-mount 16-50mm lens.

Q: 4. Hi, does the Smart AVI need a PC to run alongside it? Or is it self contained?

A: This system is basically a PC in a black box and does not require connection to another computer. It will operate and stand alone.

Q: 5. Is this actually 4 screens?

A: Yes. The LG VL5FAW 2x2 55" Video Wall with Peerless Mount Bundle BH #LG55VL5FAW4P consists of 4 55" LG VL5FAW monitors and 4 Peerless AV wall mounts.

Q: 6. it's compatible on viltrox 56mm ?

A: No, the Viltrox 56mm takes a 52mm filter.

Q: 7. does this fit nikon af-s nikkor 200-500mm f/5.6e ed vr lens?

A: The Nikon 200-500mm lens uses 85mm filters so you would need this one instead: https://bhpho.to/3YppSIB

Q: 8. What's In the Box?

A: The LG VL5FAW 2x2 55" Video Wall with Peerless Mount Bundle BH #LG55VL5FAW4P • MFR #55VL5FAW-4P includes 4 x LG VL5FAW monitors and 4 x Peerless Video Wall Mounts: VESA 600 x 400 mm

Q: 9. Will this filter fit on the Canon 24mm prime lens?

A: The Tiffen 52mm UVP filter will fit on any lens which has a 52mm diamter/filter thread. Please check the filter thread size for the lens you are interested in.... 24mm is the focal length, not the diameter/filter thread size.

Q: 10. Can it fit in Cokin P-Series Filter Holder?

A: The Cokin P filter holder is designed to fit 85 x 100mm square filters, and a 77mm circular polarizer will not fit. Check out the Cokin P164 Circular Polarizer for a filter that will fit the Cokin P holder: http://bhpho.to/JSbSAt