What Olympus lenses use ED glass? Did they always?

24 3.5 PC (Use of ED provides outstanding resolution corner-to- corner for a shift lens. This may be the sharpest PC lens in the industry.) 100 2.0 ED 180 2.0 EDIF 250 2.0 EDIF 350 2.8 EDIF 35-80 2.8 ED According to Vince at Olympus, it is *not* true that some lenses were once produced in a version without ED glass (the design of the 180/2.8, for instance, has not changed). What did change in some cases were the type and number of coatings on some lenses. This has been verified by a email to the lens design group at Olympus Japan. Thanks to "John A. Prosper" <prosper@freenet.tlh.fl.us>, Jim Terazawa <jimt@asic.sc.ti.  more

24 3.5 PC (Use of ED provides outstanding resolution corner-to- corner for a shift lens. This may be the sharpest PC lens in the industry.) 100 2.0 ED 180 2.0 EDIF 250 2.0 EDIF 350 2.8 EDIF 35-80 2.  more