Sigma AF 50mm F2.8 EX DG Macro Specifications
Diagonal Angle of View:
Number of Aperture Blades:
18.9cm (working distance at 1:1 is 39mm (16mm with lens hood on))
internal focus mechanism with floating elements
recessed front lens + LH 550-01 (round shape, thread mounted, superseded by 550-02 (round as well))
The lens features a focus limiter.