I was also disappointed with my50 mm f1.8, an impulse buy about a week ago, until last night. I have a 7D and after reading this thread I decided to play with the microadjustments. Turns out it was front focusing by 4 to 6 inches (at 4 ft). I haveset the microadjustments to +20 and I think it is stillfront focusing just a little, but my subject is now in focus (just toward the rear of the DOF).With the "microadjustment" the 100% crops look pretty good and the overall picture is looking really sharp. I can see why people like this lens so much.


I am not sure this helps you, other than to confirm that there may be a front focusing issue with the 50 mm f1.8. As others have said, maybe it is at least worth a call to the repair shop to see how much it might cost to fix.