The 58mm Hoya C8 Blue Cooling Color Conversion Filter allows you to match the white balance of 3800K tungsten-balanced, warm ambient light sources entering the lens to match daylight-balanced 5500K films. C8 filters cool the light source by 1700° Kelvin, or a -80 mired shift, by adding a dark blue to the overall exposure.

Designed for Film Photographers    Adds Dark Blue to Overall Exposure    Reduces Color Temperature by 1700°    6 layers of HMC Multicoating    Equivalent to 80C Filter

The Hoya C8 filter is helpful when:

• You are using daylight-balanced film, the light source is warm, and you want to record accurate colors on the film. Examples of warm light sources are traditional light bulbs and some halogen bulbs.
• You are shooting a daylight-balanced film and you want to create a day-for-night look. The extra blue cast will help give daytime that night feel, especially on overcast days.

Hoya multicoat (HMC) filters are recommended for enhancing the performance of today's multicoated lenses. These popular filters minimize reflection, reduce flare and ghosting, and result in over 97% average light transmission.

Related Questions and Answers

Q: 1. Does It work w 3rd party (non canon) LP-E6 battery?

A: I used a non-Canon battery in mine and it worked just fine. Hope that helps.

Q: 2. Does is it fits the canon RF 100-500mm ?

A: The Hoya 77mm NXT Plus Circular Polarizer Filter does fit the Canon RF 100-500mm f/4.5-7.1 L IS USM Lens.

Q: 3. What is the primary mirror wavefront error value?

A: The Celestron C8-A-XLT CGE 8" f/10 Schmidt-Cassegrain Telescope (OTA Only) has a 1/4 wavefront error.

Q: 4. May this 72mm filters fit on a 18-35mm Sigma lens ??

A: The Hoya 72mm NXT Plus Circular Polarizer Filter is not a thin filter so it might vignette a wide lens such as the Sigma 18-35mm. This Hoya HD3 is thin and would be a better option: https://bhpho.to/2pRzaOn

Q: 5. What mount is suitable for C8-A-XLT?

A: With an instrument load capacity of 30 lbs, the Advanced VX Mount and Tripod Item #: 91519 is a perfect match for the C8-A-XLT CGE Schmidt-Cassegrain optical tube.

Q: 6. Does this scope have fastar capability? Thank you.

A: Yes. The Celestron C8-A-XLT CGE 8" f/10 Schmidt-Cassegrain Telescope is Fastar compatible.

Q: 7. Do you need to buy a separate batterie for the grip itself?

A: It takes 2 canon batteries or you can use normal AA batteries in the AA holder that it comes with, so yes you need to provide your own batteries. The grip is really nice and it is well built!

Q: 8. Is it useful at the long end of a tele-zoom? Say 100-150 of a 14-150 Olympus.

A: I would not recommend it if you want to have a sharp image.

Q: 9. I do NOT want a slim profile filter. I am only interested in a 67mm CP filter. Is this a slim profile filter? thanks

A: The Hoya 67mm NXT Plus Circular Polarizer Filter is not a wide filter. It is a thin frame filter. This one is considered more of a standard frame, BH #BWCPB67 (https://bhpho.to/3WTjKsY).

Q: 10. Has anyone tried an Arca-Swiss style plate made for the Canon grip (Really Right Stuff or similar) on this grip? Does it fit okay?

A: You shouldn't have any problem using any quick release plate on the Vello BG-C8 Battery Grip, since there is a standard 1/4 -20 socket on the bottom.