Certainly not an objective test.
I have found very little difference between the 2 (pixel peeping aside).
The f1.7 does not really give too much advantage in shutter speed (its just a +0.3 ev to exposure or a really small +0.3 increase to ISO). Very often, the camera does not even meter the difference.
When focused close enough, there is little to complain about regarding the lack of DOF for both of them. Rant : I just don't like the the 'bokeh type shots'. To me its just a shot with shallow DOF.
I would get either one based on budget and availability.
Hell! I've got 2 or each and 50/1.4 on the way and I've sold my prev Cosina 50/1.4
thanks fengwei, from B&S or shop? *didnt get to see forum up close since at work.. and at home, minister of finance looks over my shoulders makes it hard for me to view any such stuff.. :sweat: *she knows im poisoned.. first i got the bag, then i bought the box, then i kept looking for hood, flash, remote, 50mm, tripod, and the next thing you know.. also looking at things to sell from my room :cry: