|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.|
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|Maximum format:||35mm full frame|
|Diagonal angle of view:||63.4° (35mm full frame)|
|Lens construction:||9 elements in 9 groups|
|Closest focusing distance:||30 cm|
|Number of diaphragm blades:|
|Maximum diameter x Length:||Ø70 x 85.5 mm|
|Materials:||Metallic barrel, metallic mount|
Design and Features
The 35 mm PC-Distagon® f/2.8 lens is a wide-angle lens, the 63 mm field diameter of which is considerably larger than needed for the 24 x 36 mm format. This reserve permits the perspective to be checked and corrected by shifting the lens before shooting. In this way distorted perspective such as converging lines can be prevented or an interfering foreground suppressed.
The lens can be displaced by 10 mm upwards and downwards by simply pressing it with a finger. After the ring with the degree scale has been pulled back, the lens can also be rotated at 15º intervals, allowing lens shift in parallel with either the long or the short side of the format. Special scales permit the position set to be readjusted at any time.
High image quality is a matter of course in the wide-angle, retro-focus lenses featuring the trademark Distagon®. To compensate for aberrations in close-ups, the position of individual optical elements is automatically changed via a cam when focusing (floating element). When shifting the lens, it is inevitable that the exit pupil will also be shifted laterally from the focusing screen. The rays emerging from the pupil therefore strike the metering field of the camera's exposure sensor at a different angle. The exact shutter speed must therefore be set on the camera while the lens is still in its "normal position".
Filter size: slip on 70 mm.
The lens incorporates a floating system that provides correction of aberrations and ensures constantly high image quality at the entire range of focusing distances from infinity down to the closest focusing distance. Learn more
|User Manual. English, Adobe PDF, 75 KB|