yes thats what the red "ruby" lens coating is about, it buffers reflection from the lens surface. https://en.m.wikipedia.org/wiki/Optical_coating https://en.m.

yes thats what the red "ruby" lens coating is about, it buffers reflection from the lens surface. https://en.m.wikipedia.org/wiki/Optical_coating https://en.m.wikipedia.org/wiki/Optical_coating