Sigma 18-35mm F3.5-4.5 UC
Announced February 1994
Sigma Ultra Wide Angle Zoom 18-35mm F3.5-4.5
Sigma UItra Wide Angle Zoom 18-35mm F3.5-4.5 UC is world first wide angle zoom lens covering ultra wide angle of 18mm.
This new lens incorporating internal zooming as well as internal focusing.
With these new zooming and focusing system enables to keep constant length of the lens barrel and non-rotating front, which has a great advantage for the filter work and the sunshade. To minimize the distortion, this lens is using glass moulding aspherical element.
This new lens is of ultra compact design and weighs only 300 grams.
The product will be available in April 1994 with most AF and MF SLR cameras in the market today. Price to be announced at that time.
| Specifications | |
| Construction | 11 Elements in 10 Groups |
| Focal Length | 18-35mm |
| Maximum Aperture | ƒ22 |
| Minimum Aperture | ƒ3.5-4.5 |
| Field of View | 100.5-63.4° |
| Minimum Focus Distance | 50cm |
| Number of blades | 6 |
| Maximum Magnification | 1:12 |
| Zooming System | Rotary, Clockwise |
| Filter Size | 82mm |
| Diameter | 88mm (max.) |
| Length | 71.5mm |
| Weight | 300g |
| SRP at launch: | NA |
| Available Mounts: |
AF: Canon, Sigma, Minolta, Pentax, Nikon MF: Nikon, Canon, Minolta, Pentax, Olympus, Ricoh, Contax, Yashica. |
