Leica SL 21mm F2 ASPH is a Fixed aperture Auto Focus (AF)
Wideangle Prime lens with 35mm FF max sensor coverage, and it is designed to be used with
L Mount cameras.
What type of photography is the Leica SL 21mm F2 ASPH lens good for?
The type of photography that you are planning to use the Leica SL 21mm F2 ASPH is an important decision factor. Here we have evaluated its suitability to various photography scenarios:
Reasons to Buy Leica Super-APO-Summicron-SL 21mm F2 ASPH Lens
Here we've included a summary of the advantages and disadvantages of the Leica Super-APO-Summicron-SL 21mm F2 ASPH lens in a list form to help you determine whether it offers the features you need.
| Weather-sealed |
| Autofocus |
| Hood supplied |
| Fast Aperture |
| Covers Full-Frame Sensor |
| Minimum focus distance of 0.21m / 8.3 inch |
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Lens Mount
Leica SL 21mm F2 ASPH is compatible with cameras that have a Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Panasonic S5 II, Panasonic S5 II X and Sigma fp L.
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Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Leica SL 21mm F2 ASPH has a maximum diameter of 73mm and total length of 102mm. It weighs 789g / 27.8 oz.
Below you can find a scaled side-by-side image of Leica SL 21mm F2 ASPH and Leica APO-SL 28mm F2 ASPH (Leica L mount) to get a better idea of how their sizes compare in real life. Check the detailed comparison of these two lenses here.
Comparison image of the Leica SL 21mm F2 ASPH and the Leica APO-SL 28mm F2 ASPH Size and Weight
Leica SL 21mm F2 ASPH has a filter thread of 67mm. Below are links to the filters that we recommend you to consider for your Leica SL 21mm F2 ASPH:
![https://cameradecision.com/lenses/img/other/Leica-Super-APO-Summicron-SL-21mm-F2-ASPH-topview.jpg]()
Leica SL 21mm F2 ASPH Lens Top View
Focal Range
Leica SL 21mm F2 ASPH has a fixed focal length of 21mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 31.5mm.
Weather Sealings
The Leica SL 21mm F2 ASPH is a weather-sealed lens, which provides extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have effective protection, you have to pair the Leica SL 21mm F2 ASPH with a weather-sealed camera body such as the Panasonic S5 II, Panasonic S5 II X and Sigma fp L.
Optical Image Stabilization
Leica SL 21mm F2 ASPH doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Maximum Magnification Ratio
Leica SL 21mm F2 ASPH has a Max Magnification Ratio of 0.19x and has a minimum focusing distance of 0.21m.
Below are the 3 Wideangle Prime type Leica L mount lens alternatives with highest max magnification ratios:
Aperture
Leica SL 21mm F2 ASPH has a max aperture of F2.0 and a minimum aperture of F22.
Optical Formula
Leica SL 21mm F2 ASPH's optical formula consists of 14 elements in 11 groups .
Lens Hood
Leica SL 21mm F2 ASPH comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Body Colour
Leica SL 21mm F2 ASPH is available in Black color.
![https://cameradecision.com/lenses/img/other/Leica-Super-APO-Summicron-SL-21mm-F2-ASPH-withcamera.jpg]()
Leica SL 21mm F2 ASPH Attached to a camera
Popular Comparisons of Leica SL 21mm F2 ASPH
Here are the eight most popular comparisons of the Leica SL 21mm F2 ASPH amongst Camera Decision readers.
Top Alternatives of Leica SL 21mm F2 ASPH Lens
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