Sigma has officially launched its first-ever lens for Canon RF-mount: the 18-50mm F2.8 DC DN Contemporary. We knew the lens was on its way after Canon finally gave the key to the door of its RF-mount to Sigma and Tamron in April, and now we know that the 18-50mm will hit the shelves on July 11. It’s about time. Canon’s superb crop-sensor (APS-C) mirrorless cameras such as the Canon EOS R7, the EOS R50, and the EOS R10 (which we
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