The MidOpt 40/20 Scratch-Dig Standard

Most MidOpt filters are designed with a 40/20 scratch-dig ratio. What exactly does this mean in terms of your image results? Surface quality is important for optimal image results

Training Archive

Inspection Tools

Midwest Optical BN470

MidOpt PR032-34 Linear Polarizing Filter, Used to eliminate or greatly reduce glare, rotating linear polarizers offer maximum flexibility and ease of

PR032-34 Linear Polarizing Filter (M34 x P0.5)

Scratch / Dig Specifications - Mark Optics

Scratch and Dig numbers-By U.S. military standards

Midwest Optical Systems

Midwest Optical Systems

Midwest Optical LP590