A podcast with "The Dark Lord of Optics"
 

He is a guy that does actually know a lot of real facts about optics, his command of English isn't the best maybe, but, he gets his points across in an understandable fashion, and sorts out a lot of the clutter. He's on a lot of forums and has a website with a blog, and actually tests stuff and says what is or isn't good or useful about stuff. worth a listen;

https://www.everydaymarksman.co/podc...HWa4au0gCLvQ6Q

Not sure how this did not get any responses. I’m not really a podcast listener though.
I’ve read much of his stuff in forum posts and on his website and find it very helpful.