Until I'd posted my initial message in starting this thread, I hadn't really considered the option of using an adapter, although I knew of course they existed. So in pursuing this matter further today in other related formats, I was awakened to the idea of using lenses that I still had on hand from my 35mm film days. Namely, the 50mm Nikkor that came with my Nikon F2 (which is still stowed away in my basement). This particular lens is apparently quite highly regarded for use with the GH1 (often with a Voigtlander adapter, which is quite pricey in the U.S. -- $179 -- but obviously significantly cheaper than buying a new lens). So, for now, I think I'll give that old lens of mine a try. Many thanks, again, to all.