The Tiffen 86mm Coarse Thread 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, grinding flat to a tolerance of 1/10,000th of an inch, and then mounting to precision metal rings.

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 this just a weighted ring or does it have glass which covers the lens? I’m assuming it screws onto the front of the 12mm lens to balance a “rear-heavy” camera setup. The answers to the previous question were not very clear.

A: This is a weighted ring and not a glass filter.

Q: 2. What would be the best size for a Nikon 18-200 lens? The current screw-on filter is 72mm.

A: Measure diameter at end of lens with out a lenscap. See specs for this filter and see if it slides over your lens.

Q: 3. So what is the intended purpose of the hole in the middle?

A: In some situations you can line it up with the set screw and then you won't have rotation of the stud in the mount.

Q: 4. Do these filters fit the Dracast Camlux Pro Bi-Color On-Camera Light Kit?

A: No, these filters are meant for the Dracast LED160 light, which is smaller than the Dracast Pro Bi-Color On-Camera Light. The filter will not cover the entire light.

Q: 5. Can you tell me if the camera plate will snap into place on this clamp, or is it a slide-in like the big Manfrotto plates? Thanks.

A: First you have to open the plate up fully by turning the quickset level fully open, then you tilt your plate and slide it into one of the long side of the plate, because the plate is open, then you can push the other side of the plate into place (it will not work unless the plate is fully open). Next you close the quickset lever one notch which allows you to adjust the position, then another notch to fully lock it.

Q: 6. Will this solar filter fit the Nexstar SLT 127? It is advertised as an accessory but in the description is states otherwise.

A: Yes

Q: 7. is this compatible with the K&M 237B Table Clamp (Black) ? BH #KM237B • MFR #23700-500-55

A: Yes. These two items are compatible. Be aware of the microphone and shock-mount weight.

Q: 8. Do these have a flat side?

A: Yes these spigots have a flat size.

Q: 9. Does this fit STARSENSE EXPLORER DX 130AZ? Thanks in advance.

A: Yes. The Celestron EclipSmart White-Light Solar Filter for 127/130mm Reflector OTAs will fit the Celestron DX130AZ telescope.

Q: 10. Why do you need the filter if you are wearing proper safety glasses?

A: You need the filter to protect your camera's sensor before and after totality. You should remove it during totality. Also, use the camera's display screen and not the viewfinder to protect your eyes.