So I have been playing with my e-pl2 and some older legacy lenses that I collected thru the years, and was hoping to find a nice low light lens to shoot wide open... I was very surprised at my results with the lenses taken wide open... Konica 40mm 1.8 - Wanted to like this, even added the extra f2.2 notch between f1.8 and f2.8, but no dice. At 1.8 and 2.2, soft and flaring.. Pentax 50mm 2.0 - Soft at f2.0, but really wants to be at 3.5 for decent Minolta 50mm 1.7 - Better than both previous lenses, but still, wants to be at 2.8 and up Konica 52mm 1.8 - About the same as the Minolta, and the same comments, but nice colors Nikon AIS 55mm 2.8 - At 2.8, sharper than all the others wide open, 1 stop down, better than all the above at any f stop. Nikon 50mm 1.8 AF-D - My surprise- better than all the previous lenses, and 1 stop down, about equal to the 55mm. I did not expect this type of result for the Nikon 50mm. Its not the best to manually focus, but when you nail it, pretty impressive. I used this on my d7000 and just forgot how good it can be, even though most test kind of brush it off. Realize this is only looking at comparing contrast and sharpness. As far as character goes, I still like the legacy stuff.