APO-VARIO-ELMARIT-SL 90–280 f/2.8–4

Быстрейший автофокус

Светосильный телеобъектив Leica APO-Vario-Elmarit-SL 90–280 mm f/2.8–4 продолжает фокусные расстояния объектива Leica Vario-Elmarit-SL 24–90 mm f/2.8–4 ASPH. Вместе эти два объектива покрывают диапазон от 24 до 280 mm.

Новая система внутренней фокусировки, предлагает фотографам быстрейший автофокус среди профессиональных объективов. Встроенная система оптической стабилизации (OIS) компенсирует до 3.5 ступеней.

AF System with Dual Syncro Drive™
From zero to sharp in no time

The AF system of these lenses is fast, precise, and almost silent. They thank their outstanding AF performance figures to the autofocus drive unit they share. These are limited only by the mass of the lens elements moved when focusing, the travel from infinity to the closest focusing distance and, of course, the amount of space available. In order to preserve the compact dimensions of the lenses, the integration of these components must follow an integral approach.

Подробности

Specialists from the areas of optical and mechanical engineering and electronics worked together in an interdisciplinary team on the development of a unique lens concept based on double internal focusing. This system, comprising two particularly light focusing lenses, allows the construction of particularly small and compact drive systems. In addition to space limitations, the choice of the drive motors is also determined by the AF principle used for focusing.

Several contrast measurements at various focusing positions must be made before the correct direction of motion for focusing can be determined and followed by precise focusing. In this procedure, the focusing lenses must be moved rapidly backwards and forwards in accordance with the speed specifications of the contrast AF system. This requires a dynamic drive system without any play.

In these lenses, the drive units installed are extremely powerful and robust stepping motors with Dual Syncro Drive™. Thanks to these, the entire focusing throw can be traveled completely in fractions of a second. This means that the lenses achieve values that are among the best in the full-frame system segment in terms of speed, precision, and noise emissions. 

ДЕТАЛИ КОНСТРУКЦИИ

23 элемента в семи группах, 7 элементов с аномально низкой дисперсией для минимизации хроматических аберраций. Движение двух фокусирующих элементов обеспечивается недавно разработанным приводом с линейным шаговым двигателем. Особенностью этого является то, что общая длина объектива не изменяется при фокусировке или зумировании. Бленда поставляемая с объективом подавляет нежелательные отражения и рассеянный свет. Объектив также имеет съёмную лапку для крепления к штативу. Его эргономичный дизайн облегчает переноску и позволяет закрепить объектив на поясе. Лапка имеет фиксаторы каждые 90 градусов для быстрого переключения из пейзажного в портретный формат.

Proofs of performance
APO VARIO-ELMARIT-SL 90–280 f/2.8–4 in Action

9
f
1/250
s
100
ISO
280
mm
6.3
f
1/250
s
200
ISO
101
mm
5.6
f
1/400
s
400
ISO
280
mm
5.6
f
1/3.200
s
400
ISO
130
mm
6.3
f
1/400
s
400
ISO
280
mm
3.9
f
1/800
s
800
ISO
264
mm
2.9
f
1/800
s
800
ISO
96
mm
9
f
1/1.600
s
400
ISO
110
mm
5.6
f
1/800
s
400
ISO
107
mm
5
f
1/640
s
400
ISO
90
mm
7.1
f
1/500
s
400
ISO
277
mm
9
f
1/400
s
200
ISO
94
mm
4
f
1/250
s
1600
ISO
222
mm
8
f
1/800
s
6400
ISO
232
mm

Technical Data

APO-Vario-Elmarit-SL 90–280 f/2.8–4

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Order number 11 175
Angle of view (diagonal, horizontal, vertical) Focal length 90mm: 26.4°/22.1°/14.8°;
Focal length 280mm: 9.1°/7.5°/5.0°
Optical design
Number of elements/groups 23/17
Position of entrance pupil Focal length 90 mm: 130.2 mm
Focal length 280 mm: -21.1 mm
Working range Focal length 90 mm: 0.6 m to infinity
Focal length 280 mm: 1.4 m to infinity
Distance setting
Smallest object field Focal length 90 mm: 114x 171 mm
Focal length 280 mm: 120 x 180 mm
Largest reproduction ratio Focal length 90 mm: 1:4.8
Focal length 280 mm: 1:5.0
Aperture
Setting/function Electronically controlled iris, setting with the camera clickwheel control, third-stop and half-stop settings
Aperture setting range Focal length 90mm: 2.8-22; Focal length 280mm: 4-22
Smallest value 22
O.I.S. Performance as per CIPA 3.5 stops (at focal length f=280mm with Leica SL (Typ 601) camera)
Bayonet/sensor format Leica L bayonet, full-frame 35mm format
Filter mount E82
Dimensions and weight
Length to bayonet flange 238 mm (without lens hood)
Largest diameter 88 mm
Weight 1.710 g

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APO-VARIO-ELMARIT-SL
90–280 f/2.8–4

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Имя Номер заказа
APO-Vario-Elmarit-SL 90–280 f/2.8–4 11175
Lens Hood for SL 90–280 f/2.8–4 12300
Lens rear cap SL 16064
Lens cap E82 16019
Filter ND 16x, E82, black 13059
Filter P-cir, E82, black 13052
Filter UVa II, E82, black 13042
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