S
Siimt
Hei,
I have Sigma 70-300 APO Macro lens that I use on my Maxxum 7. Been using it for around 8 month with great results. But suddenly couple of days ago it developed rather strange and disturbing behaviour.
When I switch the camera on then as normally the camera-lens wake up and lens starts to do some pre-focus or whatever Minolta cameras tell the lenses to do when switched on. But instead of doing small "whizz" it looks like lens tries to screw manual focus ring in unknown direction. Lens motors are wrooming away for 2-3 seconds with no result and then they stop, the camera turns itself on and everything seems to be OK. Lens zooms ok, focuses ok etc.
It all starts over when I switch the camera off most of the times. Lens tries to focus back into it's "sleeping" position, rattles the focus ring for 2-3 seconds, then stops and camera finally manages to shut down.
Tried same lens with my Dynax 505si super as well, same behaviour. Checked both cameras with Minolta 28-80 zoom and both worked OK so I guess it's the Sigma lens that is having problems.
The only reason I can think of is that I left the camera in my car (inside the camerabag) for the evening and it might have caught some moisture as a result because it was a bit misty evening. But there isn't that much moisture inside the car... Then again I've left the camera out before and at the same time my Dynax was there as well. So I'm really having trouble coming up with a reason.
Anyway, has anyone had similar problems with Sigma lenses before? Any suggestions as to what to do? Because it's the lens that has the problem there's probably no point trying to "reset" the camera with the lens attached and hope that lens electronics sort themselves out...
I still have valid guarantee on the lens but would really hate to use it as it means posting the lens back to Germany where I ordered it from...
Thanks in advance,
Siim Teller - Estonia
http://teller.diip.ee
I have Sigma 70-300 APO Macro lens that I use on my Maxxum 7. Been using it for around 8 month with great results. But suddenly couple of days ago it developed rather strange and disturbing behaviour.
When I switch the camera on then as normally the camera-lens wake up and lens starts to do some pre-focus or whatever Minolta cameras tell the lenses to do when switched on. But instead of doing small "whizz" it looks like lens tries to screw manual focus ring in unknown direction. Lens motors are wrooming away for 2-3 seconds with no result and then they stop, the camera turns itself on and everything seems to be OK. Lens zooms ok, focuses ok etc.
It all starts over when I switch the camera off most of the times. Lens tries to focus back into it's "sleeping" position, rattles the focus ring for 2-3 seconds, then stops and camera finally manages to shut down.
Tried same lens with my Dynax 505si super as well, same behaviour. Checked both cameras with Minolta 28-80 zoom and both worked OK so I guess it's the Sigma lens that is having problems.
The only reason I can think of is that I left the camera in my car (inside the camerabag) for the evening and it might have caught some moisture as a result because it was a bit misty evening. But there isn't that much moisture inside the car... Then again I've left the camera out before and at the same time my Dynax was there as well. So I'm really having trouble coming up with a reason.
Anyway, has anyone had similar problems with Sigma lenses before? Any suggestions as to what to do? Because it's the lens that has the problem there's probably no point trying to "reset" the camera with the lens attached and hope that lens electronics sort themselves out...
I still have valid guarantee on the lens but would really hate to use it as it means posting the lens back to Germany where I ordered it from...
Thanks in advance,
Siim Teller - Estonia
http://teller.diip.ee