Super-Elmar-M 21mm / f3.4 ASPH (E46)

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Leica Super-Elmar-M 21mm f/3.4 ASPH.

Concentrated Quality
The new Leica Super-Elmar-M 21mm f/3.4 ASPH. is characterized by superb imaging performance and amazingly compact construction. This powerful combination makes it ideal for many applications, such as landscape or photojournalistic photography. Even at maximum aperture, the lens delivers outstanding rendition of details and optimum contrast up to its closest focusing distance.

Technical Details

The sophisticated design and construction comprises eight elements - including one with two aspherical surfaces and another four with anomalous partial dispersion - and plays a decisive role in reducing distortion and vignetting to an absolute minimum. The lens is supplied with a metal, screw-mounted lens hood to prevent flare effects and ensure perfect image sharpness.

To meet the requirements of digital photography, the Leica Super-Elmar-M 21mm f/3.4 ASPH is a benchmark in all optical performance characteristics. The stray light optimization was implemented on a very high level, allowing for backlit shots with crystal clear contrast. The design of the metal lens hood matches the appearance of the current wide-angle lenses of the Leica M system. This lens hood is also compatible with the Leica Super Elmar-M 24 mm f/3.8 ASPH and the Leica Summilux-M 35mm/1.4.

The essentials:
Diagonal angle of view: 91°
Working range: 0.7 m to infinity
Biggest scale: 1:29.8
Number of lenses/groups: 8/7
Length * 1: 43 mm
Weight * 1: 279 g
Lens hood: can be screwed on
Filter/filter thread: E46




Angle of view (diagonal, horizontal, vertical)

For 35mm format (24x36mm):

91°, 80°, 59°

For M8/M8.2 (18x27mm):

74°, 64°, 46°

Optical design

Number of elements/groups:

8 / 7

Focal length:

21 mm

Entrance pupil:

15.6 mm (related to the apex of the first lens surface in light direction)

Focusing range:

0.7 m (2.3 ft) to Infinity

Distance setting


Combined meter/feet-increments

Smallest object field:

706 mm x 1059 mm (35mm format); 530 mm x 795 mm (for M8/M8.2)

Highest reproduction ratio:




Preset, with clickstops (including half values), manual diaphragm

Smallest aperture:



Leica M quick-change bayonet with 6-bit bar coding for digtal Leica models

Filter (type):

Internal thread for screw-on filters size E 46

Lens hood:

Outer threading with stop for mounting the metal lens hood

Dimensions and weight


43 mm (1.69 in) / 55 mm (2.17 in) (with/without lens hood attached)

Largest diameter:

53 mm / 2.1 in


Approx. 279 g / 9.84 oz

What's Included


Lens, lens hood screwed on, lens rear cover, lens front cover

Limited Warranty:
Leica Camera AG (‘LEICA’) provides a three-year product limited warranty for this LEICA camera valid from the date of purchase from an authorized LEICA dealer, including the accessories contained in the original packaging, which are valid for two years.

Shipping & Returns


Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.