The Tiffen 72mm 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. Does that filter can be used with LH-70 ?

A: It screws into the adapter ring provided with the LH-70. Works quite well. No complaints.

Q: 2. will my camera's lens cap work with this filter? or do I need a different lens cap to cover it? (I have a sony rx10iii which has a fixed zeiss zoom lens, ie it's not a dslr/ interchangable lens)

A: There are no front filter threads on Tiffen's 72mm Variable ND filter and as a result cannot accept a snap -in or squeeze type of a lens cap. Since the OD of the filter is 85mm, I would suggest trying a push-on type of lens cap as shown on this link -https://a href= http://www.bhphotovideo.com/c/product/125304-REG/Kaiser_206985_85mm_Push_On_Lens_Cap.html target= _blank www.bhphotovideo.com/c/product/125304-REG/Kaiser_206985_85mm_Push_On_Lens_Cap.html/a

Q: 3. Will I be able to attach the Vello EW-78D Dedicated Lens Hood to my camera while one of these filters is on?

A: Yes you will. The Vello EW-78D lens hood is a bayonet type mount which connects on the outer perimeter of the lens. These filters will not affect the fit of the hood nor will the hood affect the fit of the filters.

Q: 4. Can these filters be stacked on b+W uv filters. Planning on using them for 58,72, and 77mm lenses I have with the uvs On.

A: I only stack this with an adapter to accommodate the smaller lenses. When I was looking at this filter, I chose the one for my largest lens and then bought adapters to use it on the smaller lens. This is the last filter I use in a stack and have used it stacked on my uv filter in 77mm.

Q: 5. Does this have hard stops?

A: No it does not have hard stops, but the stops are clearly marked on the outer perimeter with white dots.

Q: 6. Will the original lens cap fit on with this uv filter installed?

A: Most likely yes but it depends on which lens you have.

Q: 7. Can this filter use it both sides? I have to install this filter reverse in order to use a different lens hood. Would there be same result?

A: This filter has front and back threads. And they are in reverse. So the back of the filter screws in to the lens and the front of the filter works with accessories that have a 49mm thread like some lens hoods.

Q: 8. which size for panasonic lumix 12-35mm lens??

A: Kylo, if this is the lens you have:a href= http://www.bhphotovideo.com/c/product/865111-REG/Panasonic_H_HS12035_Lumix_G_X_Vario.html target= _blank http://www.bhphotovideo.com/c/product/865111-REG/Panasonic_H_HS12035_Lumix_G_X_Vario.html/aThe specifications for filter size are listed as 58mm

Q: 9. Is this filter compatible with fujifilm x100V lens?

A: Yes, this filter is compatible with the X100V.

Q: 10. How many stops of exposure compensation is needed with this filter?

A: The B+W #590/090 Red Light MRC Basic Filter has a 3 stop compensation factor.