----- Original Message ----- From: "Frank Wajer" Subject: optical formula A 100 f2.8 MACRO
> Hi, > > gee, I'm getting enablement addicted. Saturday I bought my 17th lens, the mighty A 100 2.8 MACRO. > Anyone know the optical formula for this lens? I couldn't find it on Boz's site. Boz was looking for that a few years ago, I guess he didn't find it. I know two things about it: It has what Pentax calls FREE (fixed rear element extension), It is one heck of a fine lens. William Robb
