You really want to just mail me your FA 77. Just send it and look forward to the future. Forget the past! Give it to me!
---------- Post added 02-25-21 at 08:46 AM ----------
Originally posted by house It makes no sense to sell the SMC to buy the HD. HD is reportedly a cheaper process than SMC that probably why they are cheaper.
I would check tests & samples of the lenses when they hit the street. Some of the lenses that moves from SMC to HD performed noticeably better. Sometimes not. Wait until the tests and people can judge for themselves what they want to do.
Just because a process is cheaper than the previous does not mean it is somehow worse. I believe the methods of application are easier with the HD group of coatings than SMC are/were. "HD coatings" are also a group of coatings and nt just one to be applied.