95% of the time I'm using AF but 5% of the time when I do have to use MF, such as low light situations, I'm having trouble being able to tell if the image is focused or not. With my old film SLR it was easy cause I had those circles in the middle to help me know when something was in focus or not. But with DSLR's I don't have that. I'm still new to the whole DSLR scene, and even AF SLR's. I came straight from manual film SLR to P&S to DSLR. Are there any tips / tricks out there or is my eye just screwy?