The Tiffen 72mm 81D Light Balancing Filter helps to decrease the color temperature by 500K in order to warm the image slightly in order to match the color quality of illumination. When using an 81D filter, you will be able to attain 3200K balance when the prevailing light source is 3700K. 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 500K to Convert 3700 to 3200K    ColorCore Technology

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

Subtracts 500K in order to attain 3200K color balance from 3700K illumination.

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

Related Questions and Answers

Q: 1. Will this fit a Nikon 80-400 VR AF lens?

A: yes, check lens specs, Filter Thread, Front: 77 mm

Q: 2. Can this filter be used with a lens hood?

A: I have the filter for my Canon 70-200 and NO, the lens hood cannot physically fit over the filter.

Q: 3. What size lens cap do I need?. I have been told that a 82MM lens cap is the right size as the front portion of the filter is made bigger to insure the filter does not vignette.

A: The front thread on that filter is 86mm an 82mm is too small.The only type of cap that will work is a push on lens cap and in most cases it will be a bit looser than a regular snap on cap.This one should be about the best fit, a href= http://bhpho.to/1wBcCRN target= _blank http://bhpho.to/1wBcCRN./a

Q: 4. Does this filter fit on 77mm Canon 24-105 f4/L? Or I should some other?

A: I think Canon 24-105 f4/L has 77mm filter thread. This filter should work.

Q: 5. Wil; this filter work with a Nikon 18-300mm f/3.5-6.3 zoom lens ? Also, will I get the notorious X-pattern at 18mm?

A: The Tiffen 67mm Variable Neutral Density Filter is compatible with the Nikon 18-300mm f3.5-6.3 lens. The "X" pattern only occurs when the filter is rotated beyond the 8 stop range (beyond the limit for the filter).

Q: 6. I was wondering if I could attach this unit to a General Brand 77mm Screw-In Rubber Wide Angle Lens Hood. Also, what size lens cap do I need for this filter?

A: Hi, it should fit into a rubber wide angle hood if it has another inner screw threading for a filter. and the size lens cap I use is any 77mm lens hood.

Q: 7. I usually use 0.9 Tiffen ND filters for DSLR video. I am able to get a shallow aperture in bright conditions. How much more beneficial would this filter be for me for video, as well as photography?

A: I can't help you with the video, but I use it a lot in my still photography because it gives you maximum creative control in/of such a wide variety of light conditions. Reduce depth, slow the movement of water or action or whatever as little or as much as you want - with one filter. I used to have to carry a number of ND filters and then it was an on-off affair until I found the one I wanted - by which time the light had often changed! The filter's quality is excellent and the filter is really smooth to operate. Yeah, it's pricey - but not when you consider that it's replacing three or four fixed ND filters in the range it covers. I hope I helped you. Good luck with your search. (Can't go wrong with B&H either. I've been a customer for over 30 years.)

Q: 8. Is this compatible with an e-mount Sigma 50mm? I can seem to get it to thread onto my lens.

A: Yes, it is compatible.

Q: 9. If I have a sigma 18-35 f/1.8 will I still be able to attach a lens hood to the front with this ND filter on?

A: Noah... the Tiffen VND filter ring is larger than the diameter of your lens. This is done to prevent vignetting in images. Unfortunately, it will not allow a lens hood to attach.

Q: 10. What size lens cap do I need for the 67mm filter?

A: You will need a 77mm lens cap for this filter.