The Tele-Superachromat T* 2.8/300 lens is the fastest telephoto lens in professional medium format with an outstanding optical performance on "Superachromat" level. It covers frames up to 6 cm x 6 cm. Included with the lens is a dedicated teleconverter Carl Zeiss Apo-Mutar 1.7x E T*, designed for the Tele-Superachromat T* 2.8/300 lens right from the beginning. The combination of prime lens and teleconverter builds a powerful 500 mm f/4.8 telephoto.
The cross section of the optical system indicates to the expert, that considerable amounts of optical glass are incorporated and smooth transition of image forming rays is ensured. Several lens elements are made of fluor crown glass with anomalous partial dispersion to provide excellent correction of chromatic aberrations even at wide open aperture. Veiling glare is meticulously con-trolled to ensure brilliant color saturation under adverse lighting conditions. Especially for this lens Carl Zeiss invented a novel mechanism for internal focusing ensuring movement of large and relatively heavy optical elements with unparalled accuracy. The Tele-Superachromat T* 2.8/300 lens can be focused down to 2.5 meters – even with the 1.7x Apo-Mutar teleconverter in use – thus opening unique creative opportunities.
Focusing scales are provided in m and feet. All scales are engraved. The focusing ring can move beyond infinity to allow use of this lens in a variety of temperature conditions. For additional creative possibili-ties a drop-in filter slot is provided and a high-quality polarizing filter, which is a part of the package, can be smoothly rotated in its own ball bearing. The lens is equipped with a rotatable collar for flexible use, especially with rectangular film frames. It can be safely locked in any position and has a notch every 90 degrees. This collar carries the Hasselblad system tripod quick mount and standard threads 1/4" and 3/8" right under the center of gravity of camera and lens com-bined. Also built-in is the electronic circuitry for databus communication with all Hasselblad 200 series cameras.
|Focal length||299.9 mm|
|Aperture range||f/2.8 - f/22|
|Angular field (hor./vert./diag.)||11°/11°/15°|
|Focusing range (from film plane)||2.5 m - ∞
|Working range (from front end)||2.1 m|
|Number of elements/groups||9/8|
|Image ratio at closest range||1 : 6.9
|Negative-size||55 x 55 mm|
|Coverage at close range||377 mm x 377 mm|
|Filter connection||drop-in filter
|Dimensions||Ø 134.4 mm, length 168.4 mm|