Initial Tests for ERR99 and EF-S 17-85mm

Canon EFS 17-85mm f/4-5.6 iS USM
Canon EFS 17-85mm f/4-5.6 IS USM

My initial tests revealed it might be with this lens, the Canon EF-S 17-85mm f/4-5.6 IS USM, might have been causing the error. Yet, I still have to do more rigid tests, as when I attached back this lens after rubbing off gently its gold contacts, error was gone again.

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