During stunts which can damage a lens, the Schneider 4x5.65" Optical Flat Clear Glass Filter protects expensive front elements and other filters while providing the truest image, free of unwanted color shifts.

• May be left on at all times to protect your valuable lens
• Made from Schneider's clear optical glass, these filters minimize or eliminate the need for laboratory color correction caused by filter variations
• Both the front and rear surfaces of these solid-glass (non-laminated) filters receive Schneider's hard anti-reflective (AR) coating, which measurably improves light transmission