Circular Polarizer
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A circular polarizer though re-scrambles the linearly polarized light by means of a "quarter-wave retarder." Imagine that the filter is oriented with the retarder facing you rather than the mirror.
Circular Polarizer
For Waterfall and Vertical Landscape Scenery with a central focal point
Neutral Density Filter ...
A circular polarizer can be used to have richer colors and to avoid reflections and glare in your images. This is most especially helpful when shooting outdoors.
The 'circular polarizer' term when applied to filters used with modern photo cameras is misleading, because it does not do what is described above, namely, allowing to pass only one circular polarization.
Linear and circular polarizers: Sky, water and foliage in landscape photos
Natural density: Waterfalls, rivers under bright light
Graduated neutral density: Dramatically lit landscapes
UV/haze: Improved clarity in any situation ...
How to Use Circular Polarizers in a Wide-Angle Lens
How to Use Two PL-Cir Polarizing Filters
How to Use a Photographic Polarizing Filter ...
Tiffen 67mm Circular Polarizer Wide Angle Thin Glass Filter
$54.95
Tiffen 67mm UV (Ultra Violet) Wide Angle Thin Glass Filter ...
Also, consider a Kaesemann Circular Polarizer.
Circular Polarizer to remove reflections ( not metallic-reflection ), like water, shiny-leaves, etc, ...
There are two types of polarizing filters generally available, linear polarizers and circular polarizers (or CPL filters).
I used the Nikon D200 but any camera you can use with the required circular polarizer will work just fine.
The second item is a lens. I used the AF-S VR Micro-NIKKOR 105mm f/2.8G IF-ED as I am a fixed focal length gal and this is one lens I love! ...
Most modern SLR’s require the use of circular polarizers vs. linear ones which were popular before auto focus and auto exposure technology.
I've pretty much stopped using any kind of filter on my lenses, except for a circular polarizer, when needed, mainly because it pretty much works against any kind of decent hood you may have on your lens.
Because Bay 1 filters are hard to find these days, I held a circular polarizer over the Yashica Mat's taking lens, making sure to orient it the same way as the polarizer over the Canon lens, so my light reading would be similar. How did this work?
I once lost a circular polarizer that I had rotated incorrectly, and I've heard of much worse. Camera equipment can be replaced, but the last thing you want departing the aircraft is you.
Their effect on the image is exactly the same, but for various technical reasons involving the partly reflecting reflex mirror in DSLRs they need a circular polarizer to avoid possible metering errors (and possible potential problems with AF).
Filters range from circular polarizers, warming filter, star filters, soft focus filters, and many colored filters to change the over all color of a photograph.
Filters often used in Black and White Photography and what types of effects you may see ...
Newer circular polarizers have an additional thin sheet of material - quarter-wave - which lets the filter work properly with autofocus and newer auto-exposure cameras.
Screw-in type filters are the choice of most Nikonians, and that is fine for most filters (warming, enhancers, circular polarizers; Nikon, B+W, Hoya Pro 1). To prevent flare and ghosting, get the multicoated variety.
A circular polarizer is a linear polarizer with the addition of something called a quarter-wave plate.
Circular polarizers are needed with cameras that have phase-based autofocus systems (many 35mm SLRs do). All other cameras will work fine with a Linear Polarizer.
A Circular Polarizer however, is a very handy tool for increasing saturation, and eliminating reflections on water and other surfaces.
I recently purchased a Circular Polarizer for my Sony DSC-F717 Digital Camera. How do I know what the effect the filter will have on the picture when rotating the filter to various positions?
I use coated UV filters, mostly as protectors for the front elements of my lenses, and I like to use circular polarizer when appropriate for some of my outdoor photography. I also have a set of split neutral density filters.
Circular polarizers are specifically designed for use with auto-focus SLR cameras, but they will also work on manual systems without problems. Linear polarizers are used with most video and manual focus photo cameras.
Linear is for film only, it screws up most auto focus systems on digicams. Therefore be sure you use a circular polarizer filter. It can also be used to darken skies.
Want to learn more - click here ...
Auto focus SLR lenses may require circular polarizers to allow auto focus to work properly. A polarizer is not recommended for every outdoor situation. In scenes where there is NOT a lot of reflected light polarizing filters can lower image quality.
With autofocus cameras use a circular polarizer instead of a linear one. This has nothing to do with the filter shape but with the alignment of the polarizing material. The wrong one can fool your autofocus or influence exposure metering.
Autofocus cameras need a circular polarizer to meter and autofocus correctly. Manual focus cameras can use either type.
One filter I use a lot is a circular polarizer. “Polarizers' remove polarized sunlight and are great tools for taking the glare off the snow or other reflective surfaces and bringing out deep saturated colors.
 See also: Polarizer, Camera, Light, Filter, Photograph
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