Hi, I have been surfing the web all the morning (waiting for a bed to be delivered) regarding the OM 50mm 1.8 lenses. It appears that the most recent lens is in fact similar in layout to an enlarger lens, with 6 elements in 4 groups:

Can anyone say whether this is also the case for the "Japan" version?

Do I need to get an older one (F-Zuiko) in order to have the lens design similar to the 1.4 and Pentax M 1.7 50 which I am used to, as shown in the front page of the same UCL site, where the front group doesnt have the doublet?