The 72mm 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 Hoya manufacture this Circular Polarizer in a 95mm filter size?

A: Not currently, but they do have a 95mm Circular Polarizer Filter. Hoya 95mm Circular Polarizer Filter (BH #HOCP95 • MFR #B-95CRPL-GB)

Q: 2. 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.

Q: 3. Can a lens hood be attached & removed without taking off the filter first? Specifically referring to the 77 for a Canon 100-500

A: Yes, you can attach and remove a lens hood without any hinderance while the Hoya 77mm NXT Plus Circular Polarizer Filter is attached.

Q: 4. What is the primary mirror wavefront error?

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

Q: 5. How does the EVO stand against the NC filters from Nikon, which ones are better?

A: The EVO and NC filters are both excellent, but there have not been any direct comparisons made, that we've seen.

Q: 6. would it work with other filters???

A: Yes, this filter can stack onto other filters. You will want to mount the Cir/Pol filter last, so you can utilize the polarization effect.

Q: 7. 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: 8. i'm new to photography. can i stack this filter with a protective clear filter or uv filter? i use a nikon d5300 and a af-p dx nikkor 70-300 ed vr telephoto

A: Yes you can stack the filters but in general it is recommended to only use either the clear filter or the polarizer. When you stack more layers of glass, you increase the risk of light flares and ghosting in the photo.

Q: 9. Will the Vello BG-C8 work with the new Canon EOS 6D Mark II?

A: Unfortunately this product is not compatible.

Q: 10. 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.