- Technical Specs
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 color dispersion (partial dispersion) make a crucial contribution towards restricting aberrations to an absolute minimum.
|Lens Connection||screw-on type lens hood (included in delivery), filter holder for E67 size filters optionally available|
|Field Angle||for 35 mm and M9 (24 x 36 mm) at 16 mm: 107°, 97°, 74° at 18 mm: 100°, 90°, 67° at 21 mm: 92°, 81°, 60° for digital M8/M8.2 (18 x 27 mm) at 16 mm: 90°, 80°, 59° at 18 mm: 84°, 74°, 53° at 21 mm: 75°, 65°, 46° corresponds approx. to a focal length o|
|Optical Design, Number of Lenses/Groups||10 / 7|
|Working Range||0.5 m to Infinity, range from 0.5 to 0.7 m separated by index|
|Distance Setting, Smallest Object Field||for full frame 35mm at 16 mm: 915 x 1373 mm, approx. 1:38 at 18 mm: 833 x 1250 mm, approx. 1:35 at 21 mm: 725 x 1087 mm, approx. 1:30 for M8 digital at 16 mm: 688 x 1032 mm, approx. 1:38 at 18 mm: 626 x 939 mm, approx. 1:35 at 21 mm: 545 x 817 mm, a|
|Weight||approx. 335 g|
|Aperture Setting/ Function||Preset, with click-stops, half values available|
|Bayonet/ Sensor Format||Leica M quick-change bayonet with 6 bit lens identification bar code for digital M models|
|Filter Mount||Male thread, non-rotating and with stop for filter holder or lens hood|
|Largest Diameter||approx. 54 mm (53 x 58 mm with lens hood)|