Adjust and update select Sigma EF-M-mount lenses with the UD-11 USB Dock. Used in conjunction with Sigma's Optimization Pro software, this useful accessory can be used to update lens firmware as well as adjust the amount of focus movement and MF timing when operating the focus ring.
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⚠️ WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects and/or other reproductive harm.
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