Anybody try Zeiss 25mm on EP2? I've heard that legacy under 35 can have soft corners. I have the Pany 20... but I guess I'm trying for the manual focus, rangefinder zeitgeist. Any other "50" equivalent RF lenses?
If you've got the Panasonic 20mm, why not stick with that? That's closer to a "normal" lens (21.6mm on 4/3) than any of the other options. Sure it doesn't have the same feel as a manual focus "legacy" lens, but you can MF and the image quality is a known factor!
Remember that the "normal" focal length for 135 is around 43mm. Some manufacturers actually produced 45mm standard lenses, but the switch to 50mm was mainly one of convenience rather than accuracy.
The Pany 20 is a very nice lens. It's the sharpest m4/3 I own and its minimum focus distance is great. But I also own a very good 35 for my DSLR. Guess what? I bought for it's excellent reputation but now I realize I'm more of a "50" FOV. The Pany 20 kinda feels like a "35." Primes, being primes, just have their distinctive characters. But... I will keep the 20 just to have the AF option!