The Tiffen 5 x 6" 81EF Light Balancing Filter helps 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 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 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. Is this the proper size filter for my Nikon D3100 with a 18-55mm lens?

A: Yes it is the proper size filter.

Q: 2. Is the Ice Lipo Light Pollution Filter (2") similar to a CLS Filter?

A: Yes a light pollution filter is similar to a city light suppression filter.

Q: 3. Does this or any 52mm filter accept a Nikon lens cap to cover it?

A: I have been able to put my Nikon lens caps on every filter I've ever purchased, this one included.

Q: 4. can another filter be treaded on top of this one?

A: Yes, the front threads on this filter will allow another 82mm filter to be threaded on.

Q: 5. Will this fit on the canon rebel with a 50mm stm lens?

A: This filter will fit on any lens with a 49mm filter thread.

Q: 6. I recently purchased the Dracast LED500. I'm looking for a solution to diffuse the light and also protect the bulbs. The way that the light ships, it does not come with any glass or plastic over the bulbs. This product looks like what you would need to start with, but once this product is purchased, what's next? Where can I get drop in diffusion for it?

A: That light should ship with a clear LED board protector in it already. There are drop-in filters (both diffusion and CTO) available, which need either a filter frame or barn doors to be able to fit correctly. // Also, if there are any other technical or product related questions, feel free to contact us directly at any time at support@dracobroadcast.com.

Q: 7. Will these fit on the light simultaneously with the barn doors?

A: No. Keep in mind that the light comes with a clear plastic filter holder that does work simultaneously with the barn doors.

Q: 8. Does this filter fit the canon 50 mm lens

A: The Canon EF 50mm f/1.8 STM Lens will accept a 49mm Tiffen UV Filter.

Q: 9. What is the percentage of light transmission allowed by this filter?

A: This filters allows approximately 97% of light to pass through.

Q: 10. What is the thread pitch of this filter? Is it 0.75mm?

A: I never worried about the pitch of the threads since the filter fit all my Canon DSLR cameras. Your best bet is to call one of the B&H reps. Their advice has never failed me.