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UV Filters - Photography with Imre - Episode 8

Episode 8 of my photography series discusses and demonstrates UV filters. You'll also want to check out my blog - binarygraphite.blogspot.com ...

UV filter?

In most of my pictures, I get a purple edge around trees, snow, etc. Cand this problem be solved with a UV filter? Or it's not from the UV rays?

Here's an example:

http://i26.tinypic.com/14bqk2p.jpg
Unfortunately, no.


Here is some good info on your problem:

In a perfect color-corrected optical system, all the colors come to a focus at precisely at the same location, forming an image at the surface of the digital imaging chip (focal plane). Sorry to report,

NSG Precision Cells Unveils WAV-7 Wavelength Calibration Filter

The robust wavelength calibration filter has been developed to calibrate the wavelength of spectral instruments such as spectrophotometers. The NIST-compatible filter is an easy-to-use, easy-to-clean instrument that does not require any recalibration. The filter can be customized as per laboratory requirements and has a long lifespan.

The wavelength calibration filter offers high reflectance and a high degree of thermal stability. The filter has been developed for calibration of wavelength accuracy in visible (VIS) and ultra-violet (UV) range. The non-degradable filter does not require recalibration and does not need replacement units. The WAV-7 Wavelength Calibration & Photometric Accuracy Filter offers an extensive absorption spectral data and can calibrate moderate wavelength to high resolution. Available for peak absorbance wavelengths, the calibration information is comparative to highest degree of absorbance and can offer consistent standards and high resolvable peaks.

Uv Filter - Bookshelf

Taschenbuch für Lebensmittelchemiker, Lebensmittel - Bedarfsgegenstände - Kosmetika - Futtermittel
1162 pages
Taschenbuch für Lebensmittelchemiker, Lebensmittel - Bedarfsgegenstände - Kosmetika - Futtermittel

Die UV-Filter absorbieren die energiereiche UV-Strahlung und wandeln sie nach chemisch-physikalischen Prozessen in längerwellige, energieärmere Strahlung um. In Abhängigkeit ihres Absorptionsspektrums werden sie als UV- A- oder ...


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Filters Directory

UV filter - Wikipedia, the free encyclopedia
UV filters are used in sunscreens to protect skin or in photography to reduce the level of ultraviolet light that strikes the recording medium. ...