Sigma USB Dock for Canon EF-Mount Lenses 62 MM Ultra-Fast Transfers: Up to 312

Ultra-Fast Transfers: Up to 312 MB/s for SD/microSD and 160 MB/s for CompactFlash cards (UDMA 7) ensure swift media offloading

are extremely prone to the appearance of visible hand-shake

Closed length: 61cm

Field-Flattener Lens System

Sigma USB Dock for Canon EF-Mount Lenses 62 MM Ultra-Fast Transfers: Up to 312Optimize your Sigma Global Vision lenses with the Sigma USB Dock for Canon EF mount a powerful tool that lets photographers update firmware, fine tune autofocus, and customize performance settings for Sigma Art, Contemporary, and Sports lenses. Compatible with Canon EF mount (excluding DN series), the USB Dock works with Sigma Optimization Pro software to calibrate focus parameters, adjust autofocus speed, configure focus limiters, enable manual focus