| http://www.w3.org/ns/prov#value | - But Tokina lenses need to be updated asap with ultrasonic motor and image stabilisation.0 upvotesBy Josh152 (May 1, 2013)Many first party lenses need AF fine tune as well and remember that Sigma and other third party lenses typically are made for several different mounts and are basically hacking the AF algorithms to make the lens AF at all.
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