Sigma 21-35mm Zoom Gamma
Launched 1979

Sigma’s pioneering Zoom Gamma 21-35mm lens was the world’s first wide angle zoom, an area which Sigma continues to excel in today.
Specifications | |
Construction | ? Elements in ? Groups |
Focal Length | 21-35mm |
Maximum Aperture | ƒ3.5-4 |
Minimum Aperture | ƒ? |
Field of View | ?° |
Minimum Focus Distance | ?cm |
Number of blades | ? |
Maximum Magnification | ? |
Zooming System | One-Touch |
Filter Size | ? |
Diameter | ? |
Length | ? |
Weight | ? |
SRP at launch: | ? |
Available Mounts: | ? |