CHROMASHIFT INFRA RED HIGH CONTRAST The spectral curve of this lens technology is an extrapolation of our Red High Contrast filter science with a new modified curve to balance an orange spike and suppression of green in a high light values. The technology is great for situations where there is filtered light through clouds or white light. The lens incorporates PILLA ZEISS ChromaShift Infra Red and our proprietary background neutralizer technology. This lens science works extremely well on orange and pink targets.