Photography Polarizing Filter - Honeywell Electronic Air Filter Parts - Oil Filter Specifications.
Photography Polarizing Filter
- A photographic or optical filter that polarizes the light passing through it, used chiefly for reducing reflections and improving contrast. Two polarizing filters are often used together, such that rotation of one of them results in a neutral density filter of variable density
- The polarizing filter used with most modern cameras is a circular polarizer. The first stage of the polarizer is a linear filter which filters out light that is linearly polarized in a specific direction.
- (polarizing filters) Used on camera lenses to selectively remove excess light.
- A common filter that removes reflections from water, glass and other surfaces, it also increases colour saturation.
- the process of producing images of objects on photosensitive surfaces
- (photograph) a representation of a person or scene in the form of a print or transparent slide; recorded by a camera on light-sensitive material
- The art or practice of taking and processing photographs
- the act of taking and printing photographs
polarizing
These two images are from a test that I conducted with a cheap piece of polarized film, in order to test what I read in photography books about the benefits of using a polarizing filter.
I obtained my filter from a pair of paper 3D glasses that I got as a sample from the American Paper Optics company booth at Siggraph 2002 in San Antonio. I cut the glasses in half, and dissoved the paper with water, and then dissolved the glue with Elmer's "Sticky Out."
I held the filter in front of my tripod-mounted Vivitar 3 Megapixel, Fixed-focus, point and shoot camera. In one orientation the reflections from the glass on my poster are able to pass through, and obscure the photograph in the frame. In a different orientation the reflection is substantially subdued. The light blocked or absorbed by the polarizer never reaches the light meter built into the small digital camera, and it therefore automatically sets a longer exposure to compensate.
I Think I Need a Polarizing Filter (Explored)
Explore #226 Sept 15, 2010
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