The Heliopan 77mm Circular Polarizer Slim Filter helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. This results in a noticeable increase in the saturation of skies and foliage, as well as clearer imagery when photographing in hazy conditions. A circular polarizer differs from a linear polarizer in that it supports full use of a camera's autofocus and auto exposure functions.

The front and rear surfaces of the filter both feature a single anti-reflection coating. Each coating helps to increase light transmission by reducing reflections, scattered light, and ghosting. Additionally, they offer protection to the filter substrate while helping to keep the glass clean for longer than uncoated glass.

This Heliopan filter is constructed from Schott glass for increased optical clarity and color fidelity. It features a slim brass filter ring for durability as well as jamming prevention. Its 5mm-thick profile does not have front threads in order to minimize the likelihood of vignetting with wide-angle lenses.

Minimize Reflections and Glare    Reduces Haze and Blue Cast in Landscapes    Enhances Color and Tonal Saturation    Slim 5mm-Thick Ring, No Front Threads    Front and Rear Coating    Schott Glass Construction    Brass Filter Ring

Reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.

Arrange and filter directionally polarized light perpendicularly to the reflected light allowing for the absorption of much of the light.

Lessens haze in distant landscapes and provides more saturated, vivid colors.

Strongest effect when used at a 90° from the sun.

Single coatings on both the front and rear offer protection to the glass and help to improve light transmission and image quality.

Constructed from Schott glass for optical clarity.

Brass filter ring helps to prevent jamming and provides additional strength.

Slim 5mm-thick filter ring does not have front filter threads in order to alleviate the likelihood of vignetting with wide-angle lenses.

Related Questions and Answers

Q: 1. Can you use the lens hood on a Nikkor Z 24-70mm f2.8 S lens with this CP filter?

A: You can use them together but it will be difficult to adjust the polarizer.

Q: 2. Is this filter threaded so that a screw-in lens hood can be used?

A: The Heliopan 77mm Slim Circular Polarizer SH-PMC Filter does not have front filter threads. As such, no, you would not be able to use a lens hood on the front of the Heliopan 77mm Slim Circular Polarizer SH-PMC Filter.

Q: 3. What are those index marks on the filter ring mean?

A: The index marks do not have a specific number but can help you get to the same position.

Q: 4. Which diameter filter cap will fit this? Obviously a push on type cap as it doesn't have threads.

A: Since this is a relatively obscure size for lens caps, I advise you to use a Hood Hat from Op/Tech to better protect your lens. These hood hats are made from neoprene, so it will stretch to custom fit your lens/filter combination: http://bhpho.to/1i0bRV6

Q: 5. I have a sigma 10-20 wide angle lens.Will this filter cause vignetting?

A: The Heliopan 82mm Circular Polarizer Slim Filter will have about the least vignette on the Sigma 10-20mm lens but set at 10mm you will get some with pretty much any polarizing filter.

Q: 6. Do you offer, or can you recommend a slip-on lens cap that will work with this filter? I am using this on a Nikon 28-70 AF-S lens (primarily).

A: Kaiser Slip-On Lens Caps would be great for this!

Q: 7. What is the thickness of the filter?

A: The Ice Slim Multicoated Circular Polarizer Filter (100 x 100mm) is 0.08" / 2 mm, thick.

Q: 8. Is this filter suitable for Leica 18mm lens, without vignetting?

A: If your 10mm lens has a 77mm thread this slim filter should allow for use without vignetting.

Q: 9. Anyone using it with the auto focus on the Canon EF 100-400mm f/4.5-5.6L ISII USM Lens on a 90D body? Off brand CPL interferes.

A: Ice 77mm Slim Multicoated Circular Polarizer Filter does not interfere with any of the autofocus modes when conneting the Canon EF 100-400mm f/4.5-5.6L ISII USM Lens on a 90D DSLR camera. The camera and lens have a smooth transition even in tracking focus.

Q: 10. What are the numbers (1-18) around outside edge of polarizer?

A: The numbers on the mounting ring are used as calibration dots to help with finding consistent rotational positioning.