for some time I've hesitated on re-purchasing a lens like the Olympus 9-18mm zoom (which I sold back in 2009). My reason for hesitation was that I happen to own a OM 21mm f.35 which is a lovely compact lens (in contrast to the 9-18 on the m4/3 which is quite the lump).
So this weekend I took some time to borrow a 5D and examine the OM21mm f3.5 on the camera(here). I was a little disappointed with the lens and felt that the Olympus 9-18mm on my G1 actually did a better job most specifically when fully open.
The question which remains for me now is which wide to get? Dpreview seems to suggest that the m4/3 version isn't quite up to the same standards as the 4/3 version is tested as slightly sharper. For sure the AF of the ZD lens on m4/3 is a bit rattly, but the MF touchup does activate the zoom-in on the view finder which is attractive. Of course the 7-14 looks lovely and might be the better choice.
Lastly (and to muddy the waters) I also compared my OM100 f2.8 on the 5D to my 50mm on the GH1 (both the Olympus f1.8 and the FD 1.4) and found that I did prefer the look of the 100mm on the 5D. In the past I have only compared 100f2.8 on 35mm film to G1 + 50f1.8 ... that was a much closer match.
At the moment I'm feeling like I will not put the money into a 5D and perhaps instead put it onto a 7-14mm
anyone have any thoughts?