The Heliopan Bay 6 Linear Polarizing Filter is a high-quality polarizer. A polarizing filter is used to make a blue sky bluer, enhance clouds or eliminate reflections. This filter is characterized by superb Schott glass and a rugged filter ring that both provide a snug fit and which is not prone to jamming.  

If you're out walking on a lovely day - in the mountains or at the beach - and you want to get a fabulous shot of a cloud-filled sky or make the water seem more saturated, then a polarizer is the way to go. This filter is the best way to make the clouds stand out, increase or decrease the saturation of the ocean or increase or decrease the reflection off the water. You can also use this filter when shooting into glass or windows since it will, again, either increase or decrease reflections.

If you're shooting black and white and want to simulate a threatening storm, try throwing on a #25 Red filter. The vista will take on the appearance of an imminent, ominous storm.

Polarizing filters are used to select which light rays enter your camera lens. They can remove unwanted reflections from non-metallic surfaces such as water or glass and also saturate colors providing better contrast. The effect can be seen through the viewfinder and varied by rotating the filter. The filter factor varies according to how the filter is rotated and its orientation to the sun.

Heliopan has been a leader in the filter industry since 1949.  They are known for their high quality and production standards. Their slim mounts facilitate using them with wider angle lenses. Heliopan offers most of their filters with either their standard hard coating or with their industry leading SH-PMC 16 layer multi-coating that transmits over 99.5% of the light striking it on to the image plane for the lowest flare and greatest color saturation.

This filter is specific to Rollei's Bay 6 filter mount.

Makes a Blue Sky Bluer    Enhances Clouds    Eliminates Reflections    Rugged Black Brass Filter Ring    High Quality Schott Glass    Lifetime Warranty

This filter eliminates ultraviolet rays to remove haze from outdoor shots as well as polarizing the light to remove reflections, and increase color saturation, without affecting the overall color balance

Effective for making a blue sky bluer, making clouds stand out or increasing (or decreasing) the color saturation of water

Heliopan filters are "dyed in the mass" and ground, polished and coated to the highest standards of the German optical industry

All Heliopan screw-in type and series size filters are mounted in precision black anodized brass rings to eliminate binding or cross threading and to ensure optimal alignment

Use it indoors (museums, galleries) and outdoors

Related Questions and Answers

Q: 1. I'm looking to buy this filter to hold in front of the Rokinon 14mm wide angle lens I will buy soon since this lens does not have threads to screw on a circular polarizer. Will there be any adverse effects to my images by holding the filter in front of the lens?

A: If you plan to use this on a digital camera, I advise you to reconsider - a linear polarizer is designed for film cameras, and this will not be compatible with digial sensors. Unfortunately, there are no filter holders made that can currently accommodate the Rokinon 14mm.

Q: 2. Does this circular polarizing filter have antireflective coatings?

A: No, that filter is not multi-coated.

Q: 3. What does turning the filter do? How can the effects be seen if it is used on a twin-lens camera?

A: Spinning the front of the Hoya 43mm Linear Polarizer Filter effects the level and angle of polarization. The only way to see the effect is to look through the lens that the filter is used on.

Q: 4. How many stops does this reduce the exposure?

A: 1.5 to 2 stops.

Q: 5. will this fit a 35mm nikon 1.8 dx lens?

A: The Nikon AF-S DX NIKKOR 35mm f/1.8G Lens has a 52mm filter thread, so will be compatible with the Heliopan 52mm Circular Polarizer.

Q: 6. Will this fit in the NiSi V5 pro holders?

A: From the NiSi V5-PRO manual: The filter holder can be used only with square filters with a width of 100 mm and a thickness of 2 mm.

Q: 7. Will this fit a Nikkor af-s 10-24mm lens?

A: In researching this lens it appears to have a 77mm filter thread. So you will need to use filters that screw into a 77mm thread.Thanks for your question!

Q: 8. Is this filter multicoated?

A: This filter comes with Hoya's standard coating.

Q: 9. 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: 10. Can this Bay III filter be used on a Rolleiflex 2.8C along with the Rollei lens hood?

A: No, the Heliopan Bay 3 Clear Protection Filter can not be used at the same time as the lens hood.