Leica
Leica SL 35mm f2.0 APO-Summicron-SL Asph
Pickup available at Camera West Rancho Mirage
Usually ready in 24 hours
AF System with Dual Syncro Drive™ From zero to sharp in no time at all
The autofocus system shared by the Summicron-SL lenses is fast, precise, and nearly silent. Their outstanding AF performance figures are thanks to the autofocus drive unit they both utilize. These are limited only by the mass of the glass elements moved when focusing; the speed of moving from infinity to the closest focusing distance. In order to preserve the compact dimensions of the lenses, the integration of these components must be perfectly optimized within all design constraints.
Specialists from the areas of optical engineering, mechanical engineering and electronics worked together as an interdisciplinary team on the development of a unique lens concept based on double internal focusing. This system, comprising two especially light focusing lenses, allows the construction of particularly small and compact drive systems. While being able to work within tight space constraints, the drive motors used must maintain peak performance in all situations to be chosen for such a cutting-edge camera system.
Several contrast measurements at various focusing positions must be made before the correct direction for focusing can be determined and followed by precise focusing. In this procedure, the focusing lens elements must be moved rapidly in accordance with the speed specifications of the contrast AF system. This requires a dynamic drive system without any room for error.
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 range 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 operating noise.
Higher Contrast for greater visual depth
With a maximum aperture of f/2, the SL-Summicron lenses are significantly more compact than even faster lenses, but still allow photographers to work with similar depth of field. The reason for this is contrast: the area of highest contrast is incredibly sharp, while zones with lower contrast are unsharp or beautifully blurred.
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 “pop” more distinctly out of the foreground or background and more effectively isolate the subject. This creates a three-dimensional visual effect with very impressive 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 lowest possible level by high-quality optical coatings of the lens surfaces.
Complex Electronics for uncomplicated handling
The focusing and aperture setting functions of a SL-Summicron lens are 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.
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. Here, the communication with the camera is so fast that there is no perceptible delay. These are the primary preconditions for fast and precise contrast AF.
The aperture is driven by a stepping motor. Here, a special micro-step control system ensures precise and fast movements with minimized vibration.reflections are reduced to the lowest possible level by high-quality optical coatings of the lens surfaces.
Manual Focusing A new experience
SL-Summicron Lenses feature a totally new manual focusing ring construction concept. In this concept, 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 construction of the MF-ring guarantees reliable sealing against dust and water spray, provides protection against impacts and other mechanical stresses, and prevents focusing inaccuracies as a consequence of temperature fluctuations. Even after years of use, the MF-ring of a SL-Summicron lens impresses with a smooth action without play and homogeneous focusing.
Impressive down to the smallest detail
The consistently compact dimensions, low weight, and the excellent grip and feel of the SL-Summicron lenses are particularly impressive when shooting. Thanks to the almost identical design of the Summicron-SL lenses, feeling for the MF ring is unnecessary after switching lenses and the center of gravity remains largely the same. This means that the camera always lies perfectly in the hand and makes working from a tripod much easier.
Product Specifications:
Order number 11 184
Field angle (diagonal, horizontal, vertical) 63,4° / 54,4° / 37,9°
Optical design
Number of lenses/groups 13/11
Number of aspherical lenses 3
Entrance pupil position 66.4 mm at ∞
Distance setting
Working range ∞ to 0.27 m
Smallest object field 120 x 180 mm
Largest reproduction ratio 1:5
Aperture
Setting/function Electronically controlled aperture, set using turn/push wheel on camera, including half and third values
Aperture setting range 2-22
Lowest value 22
Bayonet/sensor format L-Mount, full-frame 35mm format
Filter mount E67
Dimensions and weight Length to bayonet mount 102 mm
Largest diameter 73 mm
Weight 750 g
Ask Us A Question
Product information
All our shipments are fully insured. For shipments valued over $200, a direct signature will be required upon delivery.
We utilize various shipping carriers, with FedEx Express being our primary choice for 2-Day and Overnight shipping within the US, as well as International deliveries.
We accept returns within 14 days of delivery, subject to a restocking fee of up to 15%. This fee is not for profit, but to cover the costs associated with selling an item. Each return is evaluated individually, and we strive to minimize this fee. In many instances, we waive it entirely if the refund credit can be applied towards another item in the store.
Please note, all returned items must be in the condition in which they were shipped. If the items are returned in a different condition, we will not be able to accept them.
We highly recommend visiting us in person to experience our fine photographic tools before deciding which tool best fits your needs. Please note that our inventory is distributed among our three stores, and what you see online may be at any of these locations. Below are a few points that we’d like to make in order to meet your needs for in store pick up.
The location of each item is indicated online. For convenience, you can choose to pick up your item at any of our stores. Once purchased, the item should be ready for pick up within 4 hours at the designated store, although this might vary depending on the store's busyness and time of day. We request that you wait for a notification from us confirming that your order is ready for pick up, to ensure the best service.
If your chosen item is not available at your preferred store, we can transfer it there after purchase. If you want to pick up an item at a different store, select that store for pick up during checkout, or choose a regular shipping method and let us know your preferred pick up store via support@camerawest.com or by responding to your order confirmation email.
For any questions about in-store pick up, please email support@camerawest.com. We'll do our best to accommodate your needs.
We offer a concierge trade-in program for the gear you'd like to upgrade, cross-grade, or simply pass on to a new owner. This enables you to acquire the tools that fit your specific needs. The easiest way to trade is to bring your gear into one of our stores and meet with us in person. However, we also accommodate those who can't visit our stores. Our online process is both personal and simple.
To begin, fill out the form on our Trade // Sell page with the details of the fine photographic equipment or watches you'd like to trade in. One of our team members will then contact you to confirm any details we might need for an accurate estimate. We will provide an estimate that doesn’t only look at the value of your trade in but the whole picture of where you want to go. If the estimate is satisfactory to you, we can provide a shipping label for you to ship your gear to one of our stores for a final inspection and store credit. Finally, we apply that credit towards your new gear!