I just got around to processing some images from the Pentax 31 f1.8 adapted for the E-P3 m4/3 camera. Since I like to use these lenses wide open, it is sometimes very difficult to nail the focus where you want it, especially at f1.4 or f1.8. The depth of field is so small it takes me some time to get it right. This has caused many a misfocused image rady for the rubbish bin. However, practice makes perfect and that applies here too. The more you pictures you take, the easier it gets but, each lens is different and you have to get used to each one. So, if you are like me, a lens nut, then it takes time to get the best out of each and every lens.
I think I nailed focus here though.