I've got a 90-300mm non USM lens which doesn't seem to want to take sharp photos anymore. I hardly get any more sharp photos out further than 150mm from it anymore. Is it me, or could this cheap lens be at the end of it's use by date?
Also when it's maybe 1/8th turn anti-clockwise from focusing on a distant object, it will focus clockwise full, then back anti-clockwise and finally focus.
Am hoping to get either a 80-400mm Sigma OS or a 100-400mm Canon IS next year anyway.
Any idea if the 90-300mm can be serviced and fixed?