Sigma AF 20mm F1.8 EX DG Aspherical RF DF Specifications
analog/digital (formerly Photozone
reported aperture control problems for EOS 30, 33, 1, 1N, 1V and D30)
Diagonal Angle of View:
Number of Aperture Blades:
rear focus, features Dual Focus (AF w. rotating or non-rotating focus ring, MF using focus ring, focus lock (no AF nor MF))
Full Focus Throw:
LH 875-02 (flower shaped)
20.58mm F1.76 at 1:4.2
"Bargain Bucket"/"El Hombre"
The Lens received the EISA Lens of the Year Award 2001-2002 and is reported to be IR capable (IR Forum).