Part A 1) What I thought was focussed and sharp... wasn't 2) What I thought was "good" colour... wasn't 3) What I thought was noiseless or very little... wasn't 4) Much more. Part B 1) I have a lot of photographs which will be junked 2) I have a lot of photographs which if not junked will have to be re-edited 3) I still have a MASSIVE amount to learn about getting the finished product from camera to print or web. And I thought I already knew a lot. Now, I know that I don't know what I don't know. Oh, yeah... and now, nearly all of the photographs I think are fairly decent have actually come from the GRD3, not the K-5 or X100. Go figure.