Built-in infrared channel can detect dust and scratches on the surface of the original negatives and slides. It is highly useful for defect removal without retouching the images. (PS: The scanner's infrared rays cannot permeate through the silver halide layer, so it not works for B/W negatives scanning.) Bundles Lasersoft Imageing SilverFast Ai Studio 8 ( US $ 299 ) Standard IT8 Calibration Target (ISO 12641-1 compliant 1997) helps you ensures accurate color results , reducing the need for repeated scans or extensive post processing color correction HDRi function - captures this information into a 64bit color HDRi file or a 32bit greyscale HDRi file Support Windows 7/ 8/ 10 and Mac OS 10.12 ~ 14.x , user can download driver from Plustek website.