Machine Vision Filters include bandpass filters for blue, cyan, green, amber, red, and deep red LEDs; colorpass filters in red and deep red; and infrared bandpass filter to maximize contrast under IR lighting. Linear polarizer, used to eliminate glare, comes with rotating locking screw to maximize versatility. Step down adapter from 27 mm to 25.5 mm and step up adapter from 27 mm to 30.5 mm are also available.