The 58mm Hoya C4 Blue Cooling Filter 58mmcools the ambient light entering the lens by 200° Kelvin, a -40 mired shift by adding blue to the overall exposure. This filter helps fine-tune the color or look of your scene to match your film's white balance.

Designed for Film Photographers    Adds Blue Cooling Effect    Reduces Color Temperature by 350°    6 Layers of HMC Multi-Coating    Equivalent to 82C Filter

The Hoya C4 filter is helpful when:

• You are using tungsten-balanced film, the light source is warmer than the traditional 3200K, and you need a specific amount of color correction to match your film type. Candles and low-watt incandescent bulbs are examples of warm light sources.
• You are shooting at sunrise or sunset with daylight-balanced film (5500K), and the overall scene is too warm. The filter will help cool the scene for a more natural look.
• 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. Hello,I noticed the only difference between this Hoya circular polarizer and last years model is this one is not coated. What is the benefit of a non-coated filter?Sincerely,Daniel

A: The main benefit of a non-coated filter is a lower price point. A multi-coated filter will provide dramatically improved light transmission and resistance to glare. If you have the option to spend more for multi-coating, I would definitely recommend it.

Q: 2. will this fit the Canon 17-55mm f/2.8 lens?

A: yes

Q: 3. Can this be used with a Canon Powershot SX420 is ?

A: No, this filter is not compatible with the SX420.

Q: 4. hello! could this fit and work on the G Master 70 200mm? Thanks!

A: Yes, the Hoya 77mm NXT Circular Polarizer Filter will fit and work on the Sony FE 70-200mm f/2.8 GM OSS Lens.

Q: 5. Is this made of alumn. or brass ???

A: The Hoya 72mm NXT Circular Polarizer Filter is manufactured from aluminum.

Q: 6. I have a Nikon 50mm 1.8 lens and I want to use the filters, can I use Aperture priority mode?

A: Yes but the filters have no bearing on exposure.

Q: 7. What country are Hoya filters made in?

A: The Hoya 67mm NXT Circular Polarizer Filter is manufactured in the Philippines.

Q: 8. Can this filter be used with a Canon Powershot SX420 IS ?

A: Unfortunately, the SX420 IS lacks a filter thread, therefore it cannot work with this filter.

Q: 9. 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: 10. Does this filter work on the Sony RX 10 iii?

A: Yes it will.