Principal specifications
Lens type Prime lens
Max Format size 35mm FF
Focal length 28 mm
Image stabilization No
Aperture
Maximum aperture F1.4
Minimum aperture F16
Aperture ring No
Number of diaphragm blades 9
Optics
Elements 17
Groups 12
Special elements / coatings Three SLD + two FLD elements
Focus
Minimum focus 0.28 m (11.02?)
Maximum magnification 0.19×
Autofocus Yes
Motor type Ring-type ultrasonic
Full time manual Yes
Focus method Internal
Distance scale Yes
DoF scale No
Physical
Diameter 83 mm (3.27?)
Length 108 mm (4.25?)
Sealing Yes
Filter thread 77 mm
Hood supplied Yes
Tripod collar No