Forum: Pentax Camera and Field Accessories
02-08-2017, 02:59 AM
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I had my Sigma 35mm Art's mount changed for free, as usual, but to be honest, it was fine and didn't need it being done.
It has never had lockup issues. AFAIK, that's because some copies of Sigma lenses such as the 70-200 came with a dud lens ID in the chip. I suppose a firmware upgrade is done to fix that.
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