I have Nikon D5000 which lacks in-body focus motor. I also have imperfect vision. When trying to manual-focus, results are not perfect. I could save a fortune by buying AF rather than AF-S lenses. ...
I am finding it quite difficult to use my 70-300 Manual focus non-VR lens with D5000. Learnt it from experts that 70-300 non VR lens does not perform well with D5k though the lens mounts on this body! ...