I spoke to Bill Moretz Photo today regarding the Chamonix 45N-1 he worked on for me (installed a Maxwell screen and timmed/shimmed to exact specs). I asked him his opinion regarding finely ground vs. acid etched focusing panels and he said the new laser etched ones are the best. He also said they're not very expensive. I've never heard of laser etched focus panels and my searches picked up nothing. He's emailing the information to me tonight. Anyone heard about these or is there any interested in this?