|PLANAR||Optically the lens is based on Planar design which was invented in 1896 and exists nowadays in several incarnations. In fact it's the most successful and the most copied optical design. The Planar designation comes from German word plan which means "plane" and emphasizes the flat field of view of the lens.|
|T*||The multi-layer coating is applied to the surface of lens elements. It boosts light transmission, ensures sharp and high contrast images, minimizes ghosting and flares.|
|Position in the lineup|
|Carl Zeiss C/Y Planar T* 135mm F/2 (60 Jahre)||1992||⊗|
|Carl Zeiss C/Y Planar T* 135mm F/2||1975||⊗|
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|Maximum format:||35mm full frame|
|Diagonal angle of view:||18.2° (35mm full frame)|
|Lens construction:||5 elements in 5 groups|
|Closest focusing distance:||150 cm|
|Number of diaphragm blades:||8|
|Maximum diameter x Length:||Ø75 x 101 mm|
|Materials:||Metallic barrel, metallic mount|
|Filter size:||72 mm|
|Hood type:||Special hood 72 mm|
Design and Features
The 135 mm Planar T* f/2 lens for the 35 mm format with its 5 detached elements is a mature Planar lens in every aspect. The performance and the image field illumination are such that the high speed can be utilized to full advantage.
Although this Planar lens has all advantages of the Gauss type, its overall length is surprisingly small. Measured from the front lens vertex to the image plane, it is only 7% longer than the focal length. The distance between the exit pupil and the back focal point is only 50% of the focal length. This guarantees good illumination of the finder area while the focusing screen used for the standard focal length of the reflex camera is retained. The 135 mm Planar T* f/2 lens is thus the ideal medium focal length lens for the 35 mm format for all applications where its high speed is of advantage.