The Tiffen 5x6" 81A Light Balancing Filterhelps to decrease the color temperature by 200K in order to warm the image slightly in order to match the color quality of illumination. When using an 81A filter, you will be able to attain 3200K balance when the prevailing light source is 3400K. The warming effect of this filter requires a 0.3-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 6" / 127 x 152.4mm.

Warming Light Balancing Filter    Less 200K to Convert 3400 to 3200K    ColorCore Technology

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

Subtracts 200K in order to attain 3200K color balance from 3400K illumination.

Filter factor of 1.3 requires a 0.3-stop increase in exposure.

Related Questions and Answers

Q: 1. Is the thread size on the front of the filter the same as the rear?

A: Yes it is

Q: 2. Does the filter come with a protective pouch?

A: Yes, Tiffen 4 x 5.65" Glimmerglass 1/4 Filter comes with a nylon velcro clouser pouch.

Q: 3. Will this fit on a Tokina 11-16mm?

A: This will fit any lens with a 77mm filter thread

Q: 4. How does a UV 17 Filter differ from a UV 15 Filter?

A: The Tiffen 77mm UV 17 Filter is an updated version of the UV 15 filter. The Tiffen 77mm UV 17 Filter absorbs 97% of ultraviolet light, while the Tiffen 77mm UV 15 Filter absorbs 81% of ultraviolet light.

Q: 5. 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: 6. will this lens fit on a Nikon 500mm PF lens?

A: If you are referring to the Nikon AF-S NIKKOR 500mm f/5.6E PF ED VR Lens, then yes, the Tiffen 95mm Coarse Thread UV Haze 1 Filter should be compatible for use on the Nikon AF-S NIKKOR 500mm f/5.6E PF ED VR Lens.

Q: 7. What is the thickness of this product? Most holders take 2mm filters but most of the expensive special orders tend to be 4mm thick.

A: Tiffen 4 x 4" #13 (2) Green Filter are 4mm thick.

Q: 8. Will this filter fit a Tokina 11-16mm lens?

A: This filter will fit any lens with 77mm filter threads

Q: 9. Can this filter be used in conjunction with a variable ND filter?

A: Yes, you would have to mount the 82mm Black Satin filter to your camera lens first, then mount the Tiffen 82VND:a href= http://www.bhphotovideo.com/c/product/821128-REG/Tiffen_82VND_82mm_Variable_Neutral_Density.html target= _blank http://www.bhphotovideo.com/c/product/821128-REG/Tiffen_82VND_82mm_Variable_Neutral_Density.html/a

Q: 10. would this filter fit my canon 75-300 mm lens?

A: For the Canon 75-300mm lens, you want a filter with 58mm threads. Have a look at the Hoya 58mm alpha MC UV Filter: http://bhpho.to/1lDeD4b