Samyang 16/2 per Canon

Parameter    Value
Focal length:    16 mm
Maximum aperture:     2.0
Angle of view:    79.5°
Minimum focusing distance:    0.2 m
Minimum aperture:    22
Number of aperture blades:    8
Focus adjustment:    manual
Optical construction:    13 lens elements, 11 groups, 1 ED, 1 ASP, 1 Hybrid ASP
Available mounts:    Canon EF, Nikon F, Sony A, Sony E, Pentax
Dimensions (for Canon EF):    89.4 x 83 mm
Weight (for Canon EF):    583g