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Coastal Optics 60mm f/4 UV-VIS-IR APO Macro

A superlative multi-spectral lens with perfect color correction..

Blog posts, reverse chronological


2021-07-15 Polarizers: Spectral Transmission Uniformity and Brightness


2019-07-20 Breakthrough Photography 6-stop ND Polarizer for Motion Blur in Broad Daylight + Reader Comments


2018-06-26 Breakthrough Photography Magnetic Filter System


2016-02-02 Breakthrough Photography Light Pollution Filter

2016-02-02 Breakthrough Photography Circular Polarizing Filters (CPOL)


2015-10-27 Spectral Transmission of Digital Sensors

2015-04-17 Breakthrough Photography X3 10-stop Neutral Density Filter


2008-07-05 Spectral transmission graphs

2008-05-02 Spectral transmission graphs

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