CHROMASHIFT INFRA RED HIGH CONTRAST This is our new 50RHC. This is an evolution of the 50RHC which has been the best-selling lens historically for Pilla. This new 50 uses the IR tech and has a touch more red in the lens for higher attenuation of the color spectrum needed for target enhancement in medium light. This is a medium light lens where light is filtered through clouds but yellow in nature... not grey overcast.