This Wine Country Camera Drop-in 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. Mounted within a geared aluminum-alloy filter ring, it is made specifically to fit between a separately-available Wine Country Camera 100mm Filter Holder and Wine Country Camera filter holder adapter ring. The filter holder's external knob integrates with the geared filter ring, allowing for the independent rotation of the circular polarizer.

The light from the sun naturally becomes partially polarized due to reflecting off electrons in air molecules, causing the light to scatter into what appears as haze. A polarizer filter arranges, and filters, this directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.

A circular polarizer only differs from a linear polarizer in that it contains a quarter wave plane in addition to the linear polarizer filter. The addition of this quarter wave plane is to circularly polarize the linearly polarized light for the use of auto focus and exposure functions. Due to how the light is broken down and filtered with a linear polarizer, auto focus and exposure accuracy become skewed during use. When the light becomes circularly polarized, it permits the use of these functions.

For increased optical clarity and color fidelity, the Wine Country Camera Drop-in Circular Polarizer Filter is constructed from Schott glass. To prevent internal ghosting and reflections, each glass surface includes 16 layers of anti-reflection coating. These coatings offer further protection to the filter substrate and help it to stay clean for longer than with uncoated filters.

Drop-in Circular Polarizer Filter    Fits Wine Country Camera Holder    2x Filter Factor, +1 Stop    Helps to Eliminate Reflections and Glare    Reduces Haze in Landscapes    Greater Color and Tonal Saturation    Multi-Coated    Schott Glass Construction    Aluminum-Alloy Filter Ring

• Drop-in circular polarizer filter for separately-available Wine Country Camera 100mm Filter Holder.
• Geared aluminum-alloy filter ring integrates with separately-available Wine Country Camera 100mm Filter Holder's external knob for independent polarizer rotation.
• Helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface.
• Polarizer filters arrange and filter directionally polarized light perpendicular to the reflected light, allowing for the absorption of much of the light.
• Clears up haze in distant landscapes and provides more saturated, vivid colors.
• Strongest effect when used at a 90° angle from the sun.
• Circular polarizers are ideal for use with digital cameras and autofocus lenses where a linear polarizer will often disrupt auto exposure and focus features.
• Multi-coated to prevent internal ghosting and reflections.
• 2x filter factor reduces exposure by approximately 1 stop.
• Constructed from Schott glass for optical clarity.

Related Questions and Answers

Q: 1. Can step down rings be used to mount use this holder on a 62mm lens? Hope that makes sense

A: Using a step down ring may result in vignetting. You're better off using the Wine Country Camera 62mm Adapter Ring for 100mm Filter Holder, BH #WI100ADP062 https://bhpho.to/3tCcbWu

Q: 2. How many filter vaults fit in the included filter vault case?

A: Hi, I have used the filter holder with the polarizing filter fitted in the dedicated slotIn addition to the polarizing filter you can fit 3 more filters:Slot 1 (nearest to the lens) 1 x 100x100 Slot 2 either a 100x100 or 150x100Slot 3 either a 100x100 of 150x100

Q: 3. I often use wide angles, between 16-24mm for long exposures using a ND filter. My current Tiffen 82mm variable ND filter will show vignetting. Will it be less so, or non existent with this system..Is it wide enough?

A: While specifics depend on the camera, the sensor and the actual lens, it can be said in general that 100mm filters do not vignette on any lens they are mounted on.

Q: 4. Do the Lee filters work with this base? The 100mm with gaskets and the 100x150mm

A: I have no direct experience but have been doing some research. If you look at the Wine Country Camera website FAQs http://www.winecountry.camera/faqs/, there is this statement, so I presume that the holder generally works for Lee filters: Service Advisory: We are noticing that some Lee grads have been produced at a thickness outside of their specification. If you experience difficulty installing your grad, contact us immediately and we will resolve it for you.

Q: 5. Do Singh Ray filters work with this system?

A: Yes any brand of filters of the correct size will fit: 100 x 100mm, 100 x 150mm, or any with a maximum width of 100mm on one end.

Q: 6. Do these NDs have IR Cut on them already and how good is the IR cut if so?

A: These are high quality filters that all have IR Attenuation.

Q: 7. Will this fit the Cokin Z-Pro and/or Lee filter holders? Cokin accepts 1.5mm thick filters and Lee accepts 2.0mm filters. Thanks.

A: This will not fit into the Cokin Z-Pro or Lee filter holders. It is designed for Wine Country filter holders only and is 7mm thick.

Q: 8. Does this Filter Holder work with LEE Lens Adapter Rings?

A: No it does not work with the LEE filter holder adapter rings. The rings for this system are much larger.

Q: 9. Is this compatible with the NiSi 46mm Natural Night Filter?

A: Yes, the Sigma Filter Holder with WR Circular Polarizer RCP-11 Drop-In Filter would be compatible with the NiSi 46mm Natural Night Filter.

Q: 10. Is there a lens-cap to go with the Wine Country system, so that I don't have to unscrew adapter rings everytime?

A: We could not find a lens cap for the Wine Country Camera filter holder. We know of no cap for the other larger filter holders either. Please know it does have a protective pouch when transporting. However, I do hear you. I have been in situations where I want to have at least moisture or dust protection while sitting or doing a short move to another set up. In these situations, I would suggest using disposable shower caps which are available at your local drug store or your next motel overnight stay.