TIFFEN CHECKS IR POLLUTION

Date: 25/11/2009
TIFFEN CHECKS IR POLLUTION Tiffen International has developed a new range of optical filters to remove the infrared light that can affect cameras using CMOS and CCD image sensors. The new T1 IR filters are manufactured to high standards to effectively eliminate IR pollution and, only having a half-stop of attenuation, can be used as fix-and-forget extras.

 
T1 IR filters allow cameras to capture the full range of subtle red hues while maintaining crisp blacks and the entire wide colour gamut the cameras were designed for. The filters use Tiffen's ColorCore technology with each effect captured between two pieces of glass, so the surfaces can be ground and polished to provide perfect parallelism. They contain no dichroic coating and so will not vignette green, magenta or cyan at wide angles. Filters are available in 77mm (thin profile wide-angle ring), 138mm, 4x4, 4x5.65 and 6.6x6.6 with other sizes supplied on request.
 
T1 IR filter performance has been tested with Sony EX1 and EX3 digital video cameras. The cameras themselves have hot mirrors to block wavelengths above 700nm with a gradual cut-off to preserve the red response; and so the cameras' CMOS sensors see a small portion of light at the red edge of the visible spectrum. This includes some IR pollution that shows on the camera output, particularly in areas such as dark manmade fabric with greens becoming a reddish muddy brown and blacks having a magenta hue. These pollution effects are not seen when using a T1 IR filter.
 
Tiffen is a leading manufacturer and supplier of photographic filters and lens accessories for consumer and professional imaging as well as for the motion picture and broadcast television industries, with almost 70 years experience. Today, the company offers a wide range of products from its divisions, which include: Consumer, Motion Picture and Television and Digital and well as Tripods and Support Systems that includes Steadicam® high-tech camera stabilizing systems.
 
The company has a rich history of innovative product design, superior optical consistency and unparalleled quality. Tiffen has been recognized for its product and engineering excellence earning two Technical Achievement Awards and a Scientific and Engineering Award from the Academy of Motion Picture Arts & Sciences, as well as an Emmy Award from the Academy of Television Arts and Sciences.
  


Tags: tiffen | ir pollution | steadicam | filter | t1 ir
Submitted by TV-Bay

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