Hallo; does autofocus actually work with the Pentax K10D and Tamron 18-250mm?
If so,how good/fast is it?
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If the version of the firmware on your K10D is at least 1.30, then autofocus will operate with all K-mount variants of the lens. If not, variants of the lens that do not have an AF coupler at the lens mount (if they exist for the K mount) will not be able to autofocus.