Leica SL 90mm f2.0 APO-Summicron

$5,150.00

Available for Pre-Order

Location: Camera West WC

Quick Overview:

Its high speed and the unique aesthetics of its depth of focus make this telephoto lens the first choice for portrait photographers. At the decisive moment, its almost silent and simultaneously precise autofocus gives photographers more time to concentrate fully on the creative aspects of their subject, the person in front of their camera. Like all Leica SL-Lenses, the APO-Summicron-SL 1:2/90 ASPH. is perfectly matched to the modern SL-System and is constructed for a long working life under professional shooting conditions.

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

The AF system of the Summicron-SL 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.

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 the Summicron-SL 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 Summicron-SL lenses achieve values that are among the best in the full-frame system segment in terms of speed, precision, and noise emissions. 

Higher Contrast
for greater perceived depth

With an initial aperture of f/2, the SL-Summicron lenses are significantly more compact than faster lenses, but still allow photographers to work with similar depth of field. The reason for this is contrast: the zone of highest contrast is perceived by viewers as being sharp, while zones with lower contrast are regarded as being unsharp.

In the case of SL-Summicron lenses, this difference in contrast is considerably higher than that of conventional lenses: sharply focused objects show much higher contrast than objects that are out of focus. This means that objects “snap” more distinctly out of the foreground or background and more effectively isolate the subject. This creates a three-dimensional visual effect with very impressive apparent depth.

Optically and Mechanically
a new standard

In the construction of the Summicron-SL lenses, particular attention has been paid to the prevention of stray light and reflections. The optimization of the optical and mechanical design was carried out in elaborate simulations before the construction of the first prototype lenses. Unavoidable reflections are reduced to the best possible level by high-quality coating of lens surfaces.

Complex Electronics
for uncomplicated handling

The three most obvious functions of a Summicron-SL lens to users – focusing, MF ring, and aperture setting – are all based on a multitude of control systems and mathematical operations. The demands on the electronics are particularly high in the case of the double focusing system. Here, the two autonomous focusing units must be moved in perfect synchronization and positioning data have to be analyzed at a very high sampling rate and passed on to the camera. 

The transfer rate between the lens and the camera is so high that there is no perceptible delay. These are the primary preconditions for fast and precise contrast AF.

A ring magnet with alternating north-south magnetization is embedded in the manual focusing ring. The magnetic field changes its polarity when the ring is turned. A sensor monitors the status of the magnetic field and sends the data to the main processor. The drive then shifts the lens to the corresponding focusing position on the basis of the angle of rotation and the rotational speed.

The iris is driven by a stepping motor. Here, a special micro-step control system ensures precise and fast movements with minimized vibration.

Field angle (diagonal, horizontal, vertical)
27.3° / 22.9° / 15.4°

Number of lenses/groups
11/9

Number of aspherical lenses
1

Entrance pupil position
22.9 mm

Working range
0.6 m to infinity

Smallest object field
120 x 180 mm

Largest reproduction ratio
1:5

Setting/function
Electronically controlled aperture, set using turn/push wheel on camera, including half values

Aperture setting range
2-22

Lowest value
22

Bayonet/sensor format
Leica L bayonet, full-frame 35mm format

Filter mount
E67

Length to bayonet mount
102 mm

Largest diameter
73 mm

Weight
700 g

Payment 


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Shipping


All items are available for free in-store pickup (this option is available during checkout). We have a variety of shipping options through Fedex and USPS. If you require a different shipping method, please contact us. We only ship to your verified PayPal address. Your tracking number will be emailed at the time of shipment.   

Returns 


All sales are final. We want to ensure that you are getting purchasing the right equipment for your needs, so please contact us with any questions.   

Exchanges


Exchanges are subject to 15% restocking fee. The item must be in as sold condition, complete with all corresponding interior and exterior packaging and accessories.   

Equipment Warranty


Camera West thoroughly inspects, cleans, describes, and services (if necessary) all used products we sell. We take pride in our used inventory, and we stand behind it.Camera West includes a 90-day warranty with all used products. Used products that do not function as stated when sold within 90 days of sale will be repaired or replaced by Camera West. This excludes loss of product, impact damage, fire damage, water damage, or misuse of the product. New items are subject to the manufacturer's warranty. If you have any question or problem with a new item, please contact us immediately, and we will facilitate resolution as quickly as possible.

Delivery


We have the right to refuse orders for any reason. Orders that are refused will be fully refunded, and closed.



Pre-Owned Cosmetic Grading Scale


10- | LIKE NEW

Item shows no visible signs of use. Usually includes some, if not all, of the original packaging. Item can be considered like new

9+ | Very good

Item shows very slight handling wear. Item is almost new, but used lightly.

9 | GOOD 

Item shows minor handling wear, usually shows some signs of edge wear. 

8+ | AVERAGE

Item shows regular signs of use, some edge wear, and normal cosmetic marks from general use.

8 | BELOW AVERAGE

Item shows significant wear from normal use. Some paint loss, and edge wear. Regular cosmetic marks are visible.

7+ | ACCEPTABLE BARGAIN

Item shows nominal signs of heavy use. Significant paint loss, edge wear and cosmetic marks are visible throughout the item.

7 | AVERAGE BARGAIN

Item shows significant signs of heavy handling. Significant paint loss, edge wear, and visual marks can be seen throughout the item. 

6+ | EXTREME BARGAIN

Item shows extreme signs of heavy handling. Extreme paint loss, edge wear and visual marks can be seen throughout the item.

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