I'm just curious what you guys would recommend: I know 50mm prime is the normal lens for full frame cameras. I believe that corresponds to about a 22-25mm lens depending on which m43 camera you're using. I'm curious if there is more edge distortion on these lenses with a shorter focal length. I.E. if you compared a 50mm on a full frame with a 20mm or 25mm on an m43 camera, what are the differences? I really just want a fast, sharp portrait lens. I have the Panny 20mm 1.7 but I have nothing to compare it to and I wouldn't mind having something a bit faster and it feels just a tad wide when I use it for portraits and get close... almost like there is a bit of distortion. Am I just seeing things and is this lens about as normal as they come? I'm considering the: Panny 25mm Leica f1.4 summilux Nokton 25mm f.95 Any recommendations?