The Tiffen 67mm 81EF Light Balancing Filterhelps to decrease the color temperature by 650K in order to warm the image slightly in order to match the color quality of illumination. When using an 81EF filter, you will be able to attain 3200K balance when the prevailing light source is 3850K. The warming effect of this filter requires a 0.6-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, grinding flat to a tolerance of 1/10,000th of an inch, and then mounting to precision metal rings.

Warming Light Balancing Filter    Less 650K to Convert 3850 to 3200K    ColorCore Technology

Light balancing filter decreases color temperature and provides a warming effect.

Subtracts 650K in order to attain 3200K color balance from 3850K illumination.

Filter factor of 1.5 requires a 0.6-stop increase in exposure.

Related Questions and Answers

Q: 1. Will this work with the canon rebel t3 slr? why is it labeled 52 mm? will it work with canon 70-300 zoom lens and canon standard 18-55 mm lens?

A: The Canon Rebel T3 SLR can be used with circular polarizers, however the lens/lenses you use will determine the specific filter size you need. This particular one is labeled 52mm as the diameter (measurement of line through the center) is 52mm wide. The Canon 18-55mm and 70-300mm lenses in this instance both have 58mm sized filter threads to mount filters and lens caps. So this 52mm sized filter is not compatible with those lenses. See the links below for two different compatible/recommended 58mm Circular Polarizer filters:http://bhpho.to/JyJADXhttp://bhpho.to/JyNih2

Q: 2. Does this filter include an Antistatic Coating?

A: no

Q: 3. Does this filter blocks infrared light too?

A: No, the Hoya 77mm HD3 UV Filter will only assist to suppress UV rays.

Q: 4. Is it affective?

A: Yes, this filter works very well to reduce light pollution and produce cleaner sharper images.

Q: 5. is this filter necessary for nighttime videography? And is it worth buying this filter for video or you can do all of the color adjustments in post where you could remove the light pollution and grade to a natural night color?

A: If are shooting on locations at night with light pollution it is best to use a filter like the NiSi 67mm Natural Night Filter. editing in post will not be as good.

Q: 6. Is this Multicoated? Is it better than the b+w filter?

A: Yes T* lenses are multicoated. I use one of these on a Zeiss zf2 lens for Nikon and my other ZF2 Zeiss lenses (5) all have B+W F-Pro filters on them. I see no difference between these two brands of filter on lenses used on D810. There is a lot of hype around filter brands. Take the filters off when you want the lens to perform as designed.

Q: 7. What is the material of the frame? Is it brass? Aluminium? Plastic?

A: The ZEISS 77mm Carl ZEISS T* UV Filter ring is made of Aluminum.

Q: 8. Is this filter compatible with: the canon EF-S telephoto 55-250mm 58 mm lens. thank you.

A: The Canon 2188B001 58mm Circular Polarizing Filter is compatible with the Canon EF-S 55-250mm lens, and pretty much any lens with a 58mm filter thread.

Q: 9. will focus in surui anamorphic 35mm lens work correctly?

A: If you are referring to the Sirui 35mm f/1.8 Anamorphic 1.33x Lens (MFT Mount), B&H # SISR35M, the above lens has 67mm filter threads. As such, yes, you may connect the Tiffen 67mm Close-up Lens Set onto the filter threads on the Sirui lens. The lens' listed minimum focus distance is 33.5" (85 cm). When using the Tiffen 67mm Close-up Lens Set, you will be able to focus closer than the listed 33.5" (85 cm) minimum focus distance for close-up macro photography usage needs. Actual focus distance will depend on which filter (or combination of filters) you use on the lens. Do note you will still have to focus manually as this is not an autofocus lens.

Q: 10. Hi,Will this filter set work for AF-S DX NIKKOR 18-140mm f/3.5-5.6G ED VR? Can you please let me know?

A: Yes, that filter kit will work on the AF-S DX NIKKOR 18-140mm f/3.5-5.6G ED VR lens.The lens uses 67mm filters and the kit includes 67mm filters.