The Sigma USB Dock ($59 direct)($42.00 at Amazon) is an inexpensive accessory that allows you to take full control over the performance of your Sigma lenses. It's compatible with recent glass that's ...

RONKONKOMA, N.Y., June 18, 2020 (GLOBE NEWSWIRE) -- Sigma Corporation today made the following announcements: - TC-1411 magnifies lens focal length by 1.4x. - TC-2011 magnifies lens focal length by 2x ...

The Sigma USB Dock makes it easy to perform microfocus adjustments and customize some behaviors of recent Sigma lenses.