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The 77mm T1 Infrared Filter from Tiffen is a high-tech filter targeted towards eliminating infrared contamination at 680nm. This filter will assist you in maintaining your color spectrum when shooting against a dark fabric. You will notice the blacks turn out true with no color cast from the red end of the spectrum.
This filter has been created to help capture a much broader spectrum of color than previous infrared filters - particularly with digital camcorders. Color shift is a critical factor in digital photography especially when dealing with the infrared spectrum - and even more important when shooting with HD technology. Unlike traditional film cameras, CCD or CMOS sensors of a digital camera are, by nature, susceptible to infrared contamination. Manufacturers try to avoid this problem by incorporating an infrared absorbing filter on top of the image sensor. Because these filters do not have a sharp cutoff at the infrared wavelengths there has to be a compromise in order not to exclude visible red wavelengths. Despite these precautions, some infrared wavelengths pass through resulting in contamination of the image.
Tiffen's Water White glass, using their ColorCore Technology, is characterized by a high transmission quality. Typically, it will transmit 98-99% of the light. It also features an anti-glare and anti-reflective quality that makes it useful in a wide range of uses including the movie theater industry, store and art displays. The glass is virtually defect-free and is becoming more and more prevalent in digital equipment.
Helps eliminate the red contamination on dark products and fabrics
Good for digital photography
Can be used at all times with most digital cameras
Tiffen's ColorCore technology is produced through a process that entails permanently laminating the filter material in between two pieces of optical glass that are ground flat to tolerances of a ten-thousandth of an inch, then mounting them in precision aluminum rings
Tiffen, a leader in the filter industry, proudly makes its filters in the USA