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

Midwest Optical Filters Blue Bandpass Filter, 30.5 mm Thread

Inspection Tools

A Manufacturer and Designer of gaging, Imaged, Optical, and Calibration Products - Gage-Line Technology, Inc.

Midwest Optical Filters Dark Red Bandpass Filter, 30.5 mm Thread

Uniforce Sales and EngineeringMidOpt Filters - Uniforce Sales and Engineering

Midwest Optical SP625

Understanding Surface Quality Specifications

Product - Polarizing Filters and Film

Product Features Archives

Midwest Optical LP590

MidOpt Filters Where Image Quality Begins - Site ftp Elvitec

MidOpt PR120-27 Linear Polarizing Filter, Used to eliminate or greatly reduce glare, rotating linear polarizers offer maximum flexibility and ease of

PR120-27 Ultra High Contrast Linear Polarizing Filter (M27 x P0.5)

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

Training Archive