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- 50mm focal length
- 75mm equivalent focal length on APS-C cameras, 80mm equivalent focal length on Canon APS-C cameras
- F1.4 maximum aperture; F16 minimum
- Ring-type ultrasonic-type AF motor with full-time manual focusing
- 77mm filters
- 0.4m/15.7" minimum focus
- Available in Canon EF, Sony Alpha, Sigma SA, Nikon F (FX) mounts
- Aperture Range: f/1.4 to f/16.
- Hyper Sonic AF Motor.
- Three Special Low Dispersion Elements.
- Aperture Range: f/1.4 to f/16.
- Hyper Sonic AF Motor.
- Three Special Low Dispersion Elements.
- Floating System & Large Diameter Design
- Compatible with Sigma USB Dock.
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