[Eebll]

Hi all. I've been wondering why my photography skills have been a little bit hit and miss with this lens and put it down to my inexperience as a photographer and not haveing used
an auto focusing lens before of this calibrer. I read up on calibrating lens's and have done so, making a big difference to my keepers. But, unfortunatley, I've hit the ten in af fine tuning.
At around 4.5 and smaller aperture I can get great photos. At larger apertures there is some back focus. If you do the battery test ie: 4-5 batteries in a row one behind the other and slightly
sticking out from behind the one in front, you can see the difference. Now, what I've noticed while playing around is that my focus point moves from the point of focus when adjusting from 135mm to 50mm
and vice versa. I guess it would be around 30 odd degree angle from the horizontal and several mm. I'm guessing this should not be?? Any thoughts on this muchley appreciated.
I know that, sadly, I'm going to have to send it off for re-calibration. If anyone in Perth Western Australia knows a good repair shop here who can do this I'd greatly appreciate you letting me know.

Thanks all,
Eric.