Sigma 80-200mm f/3.5 Zoom - Unknown Mount

The Sigma 80-200mm f/3.5 is a constant aperture telephoto zoom lens, offering a bright f/3.5 maximum aperture across the entire focal range. This makes it particularly capable for low-light sports or portraiture where a shallow depth of field is desired. As a manual focus lens, it features a robust metal construction and a traditional push-pull zoom mechanism, providing a tactile shooting experience for film enthusiasts. Prospective buyers should check the weight and balance of the lens, as constant aperture zooms of this era are notably heavy. SDS technicians check the push-pull action for smoothness and ensure the constant aperture mechanism operates correctly at all focal lengths. Given its age, internal optics should be inspected for 'blooming' or coating degradation, and the tripod collar, if present, should be checked for secure locking.