The Tiffen 52mm 81 Light Balancing Filterhelps to decrease the color temperature by 100K in order to warm the image slightly in order to match the color quality of illumination. When using an 81 filter, you will be able to attain 3200K balance when the prevailing light source is 3300K. 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 100K to Convert 3300 to 3200K    ColorCore Technology

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

Subtracts 100K in order to attain 3200K color balance from 3300K illumination.

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

Related Questions and Answers

Q: 1. Any vignetting while using aps-c censor with 16 mm lens ( 24mm on full frame)

A: I use these filters with an 18mm lens and havent noticed any significant vignetting. Especially if you are correcting for your Lens profile in photoshop. The only serious draw back is at 18mm the rim of the filter is visible when I stack/screw them together to further slowdown the exposure. I have been getting by this by zooming in slightly to get the rim of the filter out of view. But when only using one filter at a time they work great.

Q: 2. Which camera/lens brands do these filters can be used with? I have a Canon EOS Rebel T6

A: This filter kit will work with any camera lens which has 58mm filter threads

Q: 3. how do these tiffen lens stack up to Coken filters?

A: Cokin are square or rectangular and you need to use a filter holder and adapter ring. These you just screw on the lens, not need to carry extra parts. The advantage of the Cokin is if you want to stack many filters and you are using a wide angle lens, there is less chance of vignetting with the Cokin in that situation. Also in the Cokin if you use a graduated neutral density you can raise and lower the filter to place the horizon anywhere. With a round filter if you get a graduated ND the horizon will always be in the center.

Q: 4. Should this filter have a physical hard stop at both ends? I have a different brand variable ND filter on my 50mm, and the adjustment ring will stop at both ends of the spectrum, where this one just keeps spinning with not stop. Is that a defect or how it's made? I find it annoying to not have the tactile 'stop', so to speak, of open or closed filter.Thanks for your help!

A: Adam,I have one and it does not have a stop, which is annoying. On the outside ring of the filter are Min - Max calibrations, which are not of much help. I just eyeball it until I have the scene, or photo exposed how I want it. This lack of a hard stop also caused me to unscrew the filter from my lens when I was just starting out with it. The last inconvenience is the lack of a lens cap to go over it which is a hassle when you are running and gunning. That said, the filter is a big help for quick lighting adjustments... once you get used to it.

Q: 5. Will these filters cause vignetting on a 12mm Rokinon f2 lens (mirror less)?

A: Hi, I have used 14mm and 8mm Rokinon lenses (which are fantastic by the way) but there would be no way to attach these filters onto them because the lens curves out, and there were no threads on mine so I'll assume there's no threads on yours either. Because of the fish-eye character of the lens using a larger 4 ND glass in a holder may work for the center area but would vignette on the edges of the frame. Good luck.

Q: 6. Will this ND Filter work well with the Tokina 11-16mm f/2.8 II Lens? I am unsure if I will get the notorious X-Pattern when blocking the light at 8-Stops, because as mentioned it is a very wide lens (11-16mm). Does anyone have experience? I would buy the lens and the filter together, it seems a good bundle for land- and seascape.

A: Thin version, not for the x pattern, but because the thick version comes into view on wide angle lenses 24mm.

Q: 7. Can this filter be used on Tokina 12mm-24mm lens without vingetting?

A: There is a good chance that there will be vignetting on the Tokina 12-24 when using a variable ND filter such as the Tiffen 77mm.

Q: 8. What is the outer diameter to each thread size? For example, the 72mm thread has an outer diameter of 85mm.

A: The outer diameter of the Tiffen 77mm Variable Neutral Density Filter is 88mm, plus or minus a few µm.

Q: 9. Which Day for Night Lens(es) fit a Canon Zoom EF-S 17-85mm Lens?

A: The Canon 17-85mm lens has a 67mm filter thread, so you would need the Tiffen 67mm Day for Night Lavender-Blue Cooling Filter (B&H # TICDFN67).

Q: 10. Any vignetting on a wide angle lens tamron 35mm 1.8 on a full frame?

A: I would eat my light meter if one filter ever vignetted on a 35mm lens mounted to a full frame camera.