I've read here and there that most legacy zooms should be avoided, and I've been skeptical. But I'd replaced most of my OM zooms with primes, so I didn't have to0 much of an opportunity to test. I recently had a chance to get again one of my favorite Zuiko zooms of yore for $23. So when the almost pristine 75-150 f4 arrived today, I just had to walk out front and test it. The first shot is at 75mm, the second at 150mm, and I think the lens performed well in both. Both were post-processed from raw with typical settings, no special sharpening or defringing, which was not needed. As I'm getting ready to sell my 40-150mm f3.5 - 4.5 Zuiko digital, I was pleased that the long end is well covered by the legacy glass.