CARL ZEISS Planar T* 50/1,4


Угол зрения: 45гр.
Состав линз: 7эл./6групп
Мин.фокус: 0.45м
Фильтр: М55х0,75
Габариты: 62,5х41
Вес: 290г.
Объектив с приставкой "СУПЕР".

Великолепный резкий и в то же время пластичный рисунок.

Очень приятно размывает предметы вне фокуса (bokeh).

Журнал Popular Photography (Feb 1999) назвал его лучшим штатником.

Самую малость мягок на полностью открытой диафрагме, но для портретов это в самый раз. Резкость востанавливается уже на диафрагме 2.

Отличная бликозащищенность, отлично держит боковой и контровой свет.

Бленда практически не применяется.

Минусов не замечено.

    Among the Zeiss lenses for 35 mm reflex cameras,the 50 mm Planar f/1.4 lens is the fast high-performance lens with the standard focal length. This lens, of course, also incorporates the latest advances made in the development of optical glass and in the correction of aberrations. This 50mm Planar f/1.4 lens may thus be regarded as the leading standard lens.
    The glass-to-air surfaces are provided with the multilayer T* coating. Consequently, the high image quality resulting from the excellent correction of all image errors is fully utilized to create pictures which reproduce the high contrast of the scene observed, unimpaired by reflections.
    The lens has a multitude of applications within the field of general photography. The high speed is equally valuable for taking rapid movements with short exposure times and for capturing dusk and dawn atmospheres. The close-range limit at 0.45m permits reduction ratios down to 1:6.7 without accessories. Thus, format-covering exposures with fields as small as 15x23cm are possible.

Performance data:
Planar T* f/1.4 - 50 mm
Cat. No. 10 21 44
1. MTF Diagrams

    The image height u - calculated from the image center - is entered in mm on the horizontal axis of the graph. The modulation transfer T (MTF = Modulation Transfer Factor) is entered on the vertical axis. Parameters of the graph are the spatial frequencies R in cycles (line pairs) per mm given at the top of this page.
    The lowest spatial frequency corresponds to the upper pair of curves, the highest spatial frequency to the lower pair. Above each graph, the f-number k is given for which the measurement was made.
    "White" light means that the measurement was made with a subject illumination having the approximate spectral distribution of daylight.
    Unless otherwise indicated, the performance data refer to large object distances, for which normal photographic lenses are primarily used.

2. Relative illuminance

    In this diagram the horizontal axis gives the image height u in mm and the vertical axis the relative illuminance E, both for full aperture and a moderately stopped-down lens. The values for E are determined taking into account vignetting and natural light decrease.

3. Distortion

    Here again the image height u is entered on the horizontal axis in mm. The vertical axis gives the distortion V in % of the relevant image height. A positive value for V means that the actual image point is further from the image center than with perfectly distortion-free imaging (pincushion distortion); a negative V indicates barrel distortion.

Modulation transfer T as a function of image height u. Slit orientation: tangential---sagittal-
White ligyt. Spatial frequencies R=10, 20 and 40 cycles/mm