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Leica Elmar-M 24mm f/3.8 ASPH

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The LEICA ELMAR-M 24mm f/3.8 ASPH is an extremely compact lens, especially for such a wide angle, which also offers outstanding imaging performance. Even wide-open, it delivers uniformly excellent reproduction quality over the entire image field, only deteriorating slightly towards the edges in the close-up range. This performance can only be improved slightly by stopping down, which means that you can take photographs wide open without concerns, unless your compositional ideas call for a greater depth of field that can only be achieved with smaller apertures.

The vignetting characteristic of every optical system is naturally more pronounced on a super wide angle lens than on normal and long focal length lenses. With the diaphragm completely open, it is a maximum - i.e. in the corners of the image - of around 1.9 stops for the 35mm format, or around 1.1 stops on Leica M8 models with their slightly smaller format. Stopping down to 5.6 visibly reduces this light falloff at the image edges - to 1.4 and 0.8 stops respectively. Stopping down further does not bring about any notable reduction since essentially only the natural vignetting remains.

The lens' maximum distortion is around 1% and therefore hardly perceptible.The retrofocus-like construction is made up of a total of eight lens elements and the use of an aspherical surface and glass types with anomalous colour dispersion (partial dispersion) make a crucial contribution towards restricting aberrations to an absolute minimum.

Angle of view (diagonal, horizontal, vertical) 84° / 74° / 53°
Optical design  
Number of lenses/groups 8 / 6
Focal length 24.5 mm
Position of entrance pupil 18.7 mm (related to the first lens surface in light direction)
Focusing range 0.7 m to infinity
Distance setting  
Scales Combined meter/feet graduation
Smallest object field 615 x 922 mm
Largest reproduction ratio 1:25.6
Setting/Function With click-stops, half values available, manual diaphragm
Lowest value 16
Bayonet Leica M quick-change bayonet with 6 bit lens identification bar code for digital M models
Filter mount/Lens hood Non-rotating, female thread for filters E46, male thread for lens hood, screw-on type lens hood (included in delivery)
Dimension and weight  
Length 40.6 / 56.6 mm (without / with lens hood)
Largest diameter approx. 53 mm
Weight 260 g

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