Wolfgangerl Offline Upload & Sell: Off
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I recently bought a used 7d mark I as a back-up. For the first two days, I had a Sigma 70-200 2.8 attached. Worked beautifully. When I switched to a 24-105 L Canon lens ... camera function ground to a near halt. Nothing has been the same since. Specifically, the camera only functions in AUTO mode. All other settings are a mess. For instance, in manual you might find that you can set the shutter speed but you will simultaneously be setting the ISO. Whatever you might do in manual, it's immaterial because the camera won't fire anyway. In fact, virtually none of the functions or buttons will even work, including MENU and the others. Only in AUTO.
In settings other than AUTO, when I turn the lens to MF, some of the buttons come to life, but the camera ultimately will not fire anyway.
When I attach an old FD manual focus 50 mm 1.8 lens, everything works.
Thus far I have, to no avail:
-Removed the battery, lens, backup battery, CF card then put them back in;
-Cleared camera settings;
-Replaced the backup battery;
-Tried to reload the up-to-date firmware but it tells me I don't have the permission;
-Done every other suggested trick.
I do apologize to forum posters if this is redundant; I did search this forum for related posts and didn't find anything.
What I'm trying to find out is whether others here are familiar with this nightmare, and if so, whether there is a solution-- even if it's sending it to Canon. In short, is this familiar to you and if so, is it fixable?
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