What Are Optical Brightening Agents and Why Should We Care?

Whether you're a photographer making prints or a collector of photography, you need to know about optical brightening agents (OBAs). But are they really as bad as they seem? Sources: Aardenburg Imaging https://www.aardenburg-imaging.com/optical-brighteners-obas/ Chromaxion, Paper for Fine Art https://www.chromaxion.com/information/fine_art_paper.html Red River Paper Product Grades Explained https://www.redrivercatalog.com/rr/red-river-paper-product-grades-explained.html