Question about Tamron 90mm auto/manual focus switch

Started Aug 26, 2010 | Discussions thread
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Peter McNeill Senior Member • Posts: 1,554
Re: Question about Tamron 90mm auto/manual focus switch

According to the tamron docs for my 90mm:

In AF mode, both camera and lens must be set at AF. When lens is on MF and camera at AF, turning the focusing ring may damage lens or camera.

In MF mode both camera and lens must be set to MF. In lens MF mode, turning focus ring while camera is in AF mode will cause mechanical damage.
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