The Heliopan 27mm Circular Polarizer 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 brass filter ring for durability as well as jamming prevention.

Minimize Reflections and Glare    Reduces Haze and Blue Cast in Landscapes    Enhances Color and Tonal Saturation    27mm Front Filter 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.

Dual threading with 27mm front filter threads permits combining with other filters.

Related Questions and Answers

Q: 1. does this fit a sony sel55210 lens?

A: The Sony E 55-210mm lens uses a 49mm filter. The Hoya 49mm NXT Plus Circular Polarizer Filter, BH # HOCPNP49 is a great alternative. https://bhpho.to/3fMdm0B

Q: 2. Where would the CPL be located when stacked? Front or back of the circular ND filter? thanks.

A: Most likely I would stack on the outside not the back in order to adjust polarizer

Q: 3. What is the filter factor, i.e. how many stops of light are reduced?

A: The filter factor of the Sony 82mm T* Circular Polarizer Filter is 1.6x, i.e., 3 stops of light are reduced.

Q: 4. Will this filter fit the 39 mm filter holder in my Nikon 300 mmm f/4 lens ?

A: Absolutely not

Q: 5. What is the outer diameter of this filter? I would like to use a chrosziel clamp on matte box with a step up ring, should I get the 98mm or the 100mm ring to clamp onto this filter?

A: This has a front thread size of 95mm.

Q: 6. what is filter thickness?

A: I REALLY DO NOT HAVE A DEMININSION IT IS THE SLIM FILTER THAT IS ALL I CAN TELL YOU.

Q: 7. 1. Can this circ-polarizer be stacked with a wonder-pana solid ND filter? e.g. using both polariser and ND-8 filter (or ND-32 filter) together? 2. If they can be stacked, will vignetting be observed on the Nikon 14-24 with two circular filters stacked? 3. Can we stack a circular wonderpana 145 filter with their rectangular 66 graduated ND filters? 4. If we can stack a circular with rectangular GND, will vignetting be observed on the Nikon 14-24 with total 2 filters (1 circular and 1 rectangular)?Thank you!

A: WonderPana 145/66 system allows stacking of one round filter like the polarizer and one rectangle filter or two rectangle filters. With the adapter for the Nikon 14-24 lens you can use this set up on that lens.It is designed not to vignette.

Q: 8. Is this filter multi-coated? What is the difference between this filter and the Hoya 43mm NXT Circular Polarizer Filter (B&H # HOCPN43 MFR # A-NXT43CRPL)?

A: This polarizer is not multi-coated. The difference between this filter and the NXT filter is that Hoya NXT filters have over 97% average light transmission, and are constructed from heat-resistant, high-transparency optical glass.

Q: 9. Can this filter attach to the UV filter already on the lens or is it best to use one or the other?

A: Most UV filters have front filter threads. So you could attach the ZEISS 67mm Carl ZEISS T* Circular Polarizer Filter to the front of most UV filters.

Q: 10. How do you adjust the polarized lens to avoid the line through your picture? Without downloading pictures onto computer

A: Hi Jeff, you mean the black shade in a picture, if I take this between 12-16mm wide angle, right? It depends to the angle of the sunlight and in which angle I take that image. Usually it is not possible to adjust it in advance if you need to take that pic with 12mm wide angle.Bad luck...Best regards Vedat