The 49mm Standard Hot Mirror Filters from Tiffen reflects much of the infrared light that can contaminate your digital image. Some digital still cameras can have increased sensitivity to infrared light that may cause color rendition problems. The Tiffen Standard Hot Mirror filter is designed to remedy this problem by reflecting most infrared light.
Tiffen's ColorCore glass 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.
