APS-C Format | f/1.8 to f/16 | 112.5mm (Full-Frame Equivalent) | Fast Telephoto Prime Lens | Minimum Focusing Distance: 2.4' | 11 Elements in 9 Groups | Noiseless STM Stepping Motor
Full-Frame | f/2 to f/16 | Fast Portrait-Length Lens | Nano-Coating and Resistance Coating | 2 ED & 2 HR Lens Elements | Minimum Focus Distance: 2.43' | 10 Elements in 8 Groups