Zeiss
Apo-Sonnar T* 135mm f/2 ZE for Canon
Medium telephoto prime lens
The 135mm f/2 Apo Sonnar T* ZE Lens from Zeiss is medium telephoto lens for Canon EF Mount. With a bright maximum aperture of f/2 it performs well in low-light conditions, and allows for selective focus control. A nine-blade circular aperture produces pleasing bokeh when working with shallow depth of field.
Optically special anomalous partial dispersion glass minimizes chromatic aberrations and anti-reflective coating reduces reflections and ghosting. It is a compact lens for its focal length and its "floating elements" optical design consists of 11 lens elements in 8 groups with minimal glass-to-air surfaces. This lens design ensures consistent imaging performance throughout the entire focusing range as well as edge to edge sharpness. A rotation angle of 268º enables precise manual focusing and it features a robust all-metal barrel.