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EXCERPT page containing first few paragraphs. 2023-03-21 16:20:53

Leica 24mm f/3.8 Elmar-M ASPH

Distortion: 24mm f/3.8 Elmar-M ASPH

Distortion is of the wave type: mild barrel distortion approaching the frame edge, then reversing to mild pincushion.

This is eoutstanding performance for a 24mm lens. Distortion is about half that of the 24/1.4 Summilux-M ASPH and half that of the 24/2.8 Elmarit-M ASPH. Very few prime lenses have this low a distortion behavior.

The only situation in which 1% distortion becomes visible is an even horizon or man-mad structure, but you’ll be hard-pressed to find a 24mm lens with less distortion. Even the various Nikon/Canon tilt/shift lenses have some barrel distortion of similar magnitudes, or more.

Observe that the 24/3.8 has less than half the distortion of its 24/1.4 sibling. This alone is a reason to use it preferentially if one regularly shoots man-made structures, horizons or seascapes, etc.

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Diglloyd Guide to LEICA contains in-depth coverage of Leica M system cameras and lenses, with additional coverage of Leica M Monochrom, Leica Q.

Special emphasis is placed on Leica M lenses and certain Zeiss ZM lenses.

  • Make better images by learning how to get the best results right away.
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  • Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
  • Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
  • Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.

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Distortion of the Leica 24mm f/3.8 Elmar-M ASPH and its faster f/1.4 sibling
Leica M9 + Leica 24mm f/3.8 Elmar-M ASPH, ~f/5.6 @ 1/350 sec

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