Full-Frame | f/1.8 to f/22 | Fast Portrait-Length Lens | Linear Stepping Motor Autofocus System | 1 HR, 1 ED & 3 ASPH. Elements | 9 Elements in 8 Groups | 9-Bladed Diaphragm
Aperture Range: f/1.4 to f/22 | Compatible with Full Frame and APS-C | 127.5mm (35mm Equivalent on APS-C Sensor) | One Aspherical Element | UMC Multi-Coating