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Informative, thorough, and understandable. Thanks, LensGrinder.:cheers:

I remember learning that plastic photochromic lenses become more effective (darker, quicker) when coated with AR, and, based on my experience, I believe this to be true. The reason, I was taught, is...

Thanks for the qiuck and helpful reply!

I'm inquiring about an alleged phenomena that creates an unsusual amount of ghost-image reflections in low-power (-0.75, or so) minus-spherical lenses. The apparently internal reflections are subtle...