Hey guys, I recently purchased a Rikenon 55mm 1.4 lens. Optically and mechanically it's perfect. The problem is that every image I take just isn't very sharp until I stop it to around f/2.8. My Yashica 50mm 1.9 is sharper in every in every way and it's stuck wide open. Is this a normal think for the Rikenon? Here are some preview images. Yashica (stuck at f/1.9): 1 2 3 Notice how the subjects are mostly sharp at wide open? Now here's the Rikenon (both at f/2): Rikenon 1 Rikenon 2 Am I just having trouble focusing since it has a longer range of motion than the Yashica? Or is it just not a very good piece of glass? Here are some pictures of the Rikenon: Front Element Rear Element Please excuse the focus on the first one, I was trying to get close to it. But as you can see, the glass looks fine on it. The dust isn't normally there, that is just from the cloth it's sitting on in the pictures. Anyways, Thanks!