Apologies if this has been answered before. Possibly I've been asking Google the wrong questions but I can't find much on this. Nobody seems to have mentioned it in any of the "Recommend me a 50mm..." threads here. I've recently bought an EM-5 for some upcoming travel. It came with the 14-42 II R and 40-150. After reading every lens review and "Which lens?" thread I could find, I'm thinking that I'd be pretty well equipped with the kit lenses together with an Oly 9-18mm and Oly 25mm f1.8. However, a couple of days ago, I was concerned that my D7000 was feeling neglected, so I pulled it out of the bag and noticed my 50mm f1.4D Nikkor. I picked it up and thought that it might not look out of place on the OMD. It's fairly heavy for its size but then so is the OMD. It looks tiny on the D7000 and would certainly not be a chore to carry around on my trips. Since it has an aperture ring, I assume that I can use one of the cheaper lens adapters. I also realise that I'll be focussing manually and I presume that the EVF will dim when I stop it down? Perhaps it might confuse the metering as well? No EXIF data recorded? Has anyone tried this lens on m4/3? In general, is the IQ/ extra speed from an FF prime worth the effort? Thanks , Paul.