Sigma 28-84 F3.5-4.5 Zoom Theta III
(AKA Synchro-II)
Announced October 1984

Sigma 28-84mm F3.5-4.5 Zoom Theta III
Specifications | |
Construction | 14 Elemts in 11 Groups |
Focal Length | 28-84mm |
Maximum Aperture | ƒ22 |
Minimum Aperture | ƒ3.5-4.5 |
Field of View | 75-23° |
Minimum Focus Distance | 50 cm |
Number of blades | NA |
Maximum Magnification | 1:4.85 |
Zooming System | Two Rings Rotary Type |
Filter Size | 58 mm |
Diameter | 67 mm (max.) |
Length | 89 mm |
Weight | 480g |
SRP at launch: | £130 |
Available Mounts: | MF: Nikon, Canon, Minolta, Pentax, Olympus, Ricoh, Contax, Yashica. |