The Zeiss Apo Sonnar T* 2/135 ZE 135mm f/2 Lens For Canon EF Mount  is medium telephoto lens that offers a wide maximum aperture, vibrant colour rendition and attractive out-of-focus background.
It maximum aperture of f/2 provides substantial light gathering for sharp, high resolution imaging and lovely shallow depth of field photography. A nine-blade circular aperture will offer harmonious background blur when shooting with minimal depth of focus. Special anomalous partial dispersion glass minimizes chromatic aberrations in this apochromat lens 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.
The lens design ensures consistent imaging performance throughout the entire focusing range as well as sharpness to the periphery of the image. A wide rotation angle of 268º enables precise manual focusing and its all-metal barrel provides longevity and protection for its high-quality design.
A focal length of 135mm provides medium distance telephoto imaging and is also an oft-chosen length for portraiture.
The lens design ensures consistent imaging performance throughout the entire focusing range as well as sharpness to the periphery of the image. Its minimum focusing distance is 2.62' (0.8 m).
An "apochromat" lens built with anomalous partial dispersion glass, it will minimize chromatic aberrations for sharply detailed, high contrast images free of colour artifacts.
Anti-reflective lens coatings and a deep-black special lacquer treatment on the element's edges reduce reflections and the negative effects of stray light.
Turning far to near
The high-speed tele lens excels with its excellent colour correction and rendition. Thanks to its large aperture and harmonious bokeh, it is perfect for mediumdistance portrait photography.
Enjoying the evocative atmosphere of dusk against a dreamlike backdrop - as an inconspicuous observer, the tele lens lets you experience this unique moment from the distance. Detached from the background, the Apo Sonnar T* 2/135 enables an incomparable interplay of soft evening light and radiant colours.
Offering the utmost flexibility in a wide diversity of situations, this tele lens can also capture the actor's emotions on the stage from the third row and take breathtaking portrait photos.
A lens design with relatively few glass-to-air surfaces, invented by Dr. Ludwig Bertele at Carl Zeiss in 1930 to provide the fastest lenses of that day for 35 mm photography offering speeds up to f/1.5 and well controlled veiling glare. This is where the name comes from, containig the German word for sun, ’Sonne’, the symbol of utmost brightness.
Because this lens is an apochromat, chromatic aberrations (axial chromatic aberations) are corrected with elements of special glass with anomalous partial dispersion. The chromatic aberrations are therefore significantly below the defined limits. Bright-dark transitions in the image, and especially highlights, are reproduced almost completely free of color artifacts.
Great low-light shots start with a great lens for your DSLR camera. A high-speed lens captures as much light as possible. A lens with a wide maximum aperture offers the best results in difficult lighting conditions.
Close focusing distance
The lens design ensures consistent imaging performance throughout the entire focusing range as well as sharpness to the periphery of the image. The asphere's more complex surface profile can reduce or eliminate spherical aberration and also reduce other optical aberrations compared to a simple lens.
Excellent resolution and high contrast
Rich, vibrant colors are vital to creating a lasting impression. Stray light in the lens, however, would lead to a brightening of the image, which is particularly visible in shadow areas. Image contrast is lowered; the image appears dull and bleached. We combine various, elaborate techniques to reduce unwanted stray light.
Ideal aperture with nine blades
Photographers want to guide the observer through the image. Minimal depth of focus is often used as a design element. This keeps the background intentionally blurred to keep the attention of the observer on the main subject. These different representations of the blurred areas, as well as the quality of the transition, are referred to as the Bokeh of a lens. The finely tuned features of the optical design on Carl Zeiss SLR lenses ensure a particularly harmonious effect of the blurred areas of the image. The nine diaphragm blades and the resulting, virtually circular aperture on Carl Zeiss SLR lenses are crucial to favorable rendition of highlights in the fore and background.