Sigma 135mm F2.8 YS (Pan Tele/Mini Tele)
Launched 1975


Sigma’s XQ range will have information added as it becomes available – we don’t have the original PR for this era. The YS – Yamaki System – lenses used interchangeable mounts in order to meet the growing SLR market’s wide variety of bodies. Unlike many adaptor systems, the YS allowed auto aperture and metering.

Focal Length 135mm
Maximum Aperture ƒ2.8
Minimum Aperture ƒ22
Field of View NA °
Minimum Focus Distance NA cm
Number of blades NA
Maximum Magnification NA
Zooming System NA
Filter Size NA
Diameter mm (max.)
Length mm
Weight g
SRP at launch:
Available Mounts: YS – various Manual bodies.