After a couple of months with my E-p1 and the following lenses; Vivitar 24mm f2.8 OM 35mm f2.8 OM 50mm f1.8 Konica 50mm f1.7 Konica 135mm f3.5 Vivitar 70-210 mm f3.5 Series I (stovepipe) In the short lenses, The Vivitar 24 is the best, followed by Konica 50, OM 50, and then OM 35. Test was a wicker basket on the dinning table in good indirect light no flash. Camera sitting flat on same table. All with f-5.6 apeture. I used manual fosus assist. There was VERY slight advantage of Vivitar 24 over Konica 50. Noticable difference in Konica and OM 50s. Very slight differnce in OM 50 and 35. I repeted any questionable shots due to focus. This was NOT a scientific test and it was for my own use, in deciding which lenses to keep, if I should decide to sell some. I did not do an in depth test of several apetures. By the way when I'm just going out with no plan or purpose I almost always put the 24 on and head out. I usually also have the 70-210 in the car, just in case.