The Formatt 4x5.65" Soft Gold Enhancing 1 optical filter in Schott-Desag B270 crown glass is designed to provide high-quality softening without diffusion or colour separation. It is intended to give a soft, warm feel to any image and is particularly useful for eliminating facial blemishes. Its unique design allows softening to be concentrated on a mid-distance focal point, leaving the background unaffected.nnFormatt, a company with three generations of experience in manufacturing professional filters, produces each filter to the highest technical standards. The finest materials, combined with cutting-edge production technology, have achieved a level of optical excellence unmatched elsewhere.nnNote! Soft Gold Enhancers are available in grades 1-3, with 3 having the most pronounced effect.nnn- Soft Gold Enhancers use internal reflection to disperse light from the subjectnn- The use of specially developed gold platelets eliminates harsh blue wavelengths from the image (yellow being the complementary colour to blue); They are suspended in a matrix tinted with a unique enhancer, absorbing harsh short wavelengths and transmitting warmer, longer wavelengths; Light reflected from the platelets bounces off the internal boundary layer and is refracted from its normal pathnn- Back reflection on the internal surface of the filter produces a diffused effect through refraction that softens the image at medium focal lengthsnn- Derived from the highly regarded HD Soft filter, this filter is designed and manufactured to Formatt's traditional high standards and is suitable for High Definition work in addition to classic film and video applications