Sigma 18mm f2.8 Ultra-Wide Multi-Coated - Lens

Manual focus wide-angle lens for Olympus OM mount SLR cameras made by Sigma introduced in 1980. Has in-between aperture stops and a window that shows the aperture numbers. Has a built-in metal lens hood. Metal body available in black.

• Sigma 18mm f2.8 Ultra-Wide Multi-Coated (11 elements, 9 groups)
• Minimum focus distance: 0.25m
• Aperture blades: 6
• Size: 77 x 75mm
• Weight: 336g