Question about Cameras
You're right in getting a T-mount-adapter for the Minolta / Sony Alpha / Maxxum AF A-mount / Alpha-mount camera
body - they are all the same (since 1985). Any make will do, none are
name brand anymore, and all have house-names like "Bower" or "Cambridge"
or "Adorama" or whatever - store-name repackaging of UFO original stuff
- NOTHING SPECIAL. T-mounts are the OLDEST interchangeable lens design
Sound like your problem is other, like on the cam body - this was an infrequent issue with the A100 - it should not be much more than an 1/8 turn, this might seat the lenses a bit tighter in the mount and add a little pressure on the contacts. Also, cleaning the contacts in the body is not to be forgotten. Clean both the contact pins on the camera body as well as the contacts on the lenses. After the use of rubbing alcohol also use a fresh swab to "polish" the contacts a bit. Use the alcohol sparingly, you don't want to get it into your camera or lens.
If all that does not help - and as this happens with a variety of lenses and your cam is still under warranty - sounds like sending the body in with your description of the problem is the choice left. This may be an internal loose contact in the wiring.
Keep us updated.
Posted on May 27, 2011
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Posted on Jan 02, 2017
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