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LEICA SUPER-ELMAR-M 18 mm f/3.8 ASPH.

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Aperture Stop 3.8

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Y' [mm] = 21.0

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Aperture Stop 8.0

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Y' [mm] = 21.0

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Aperture Stop 5.6

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MTF graphs

The MTF is indicated both at full aperture and at
f/5.6 at long taking distances (infinity). Shown
is the contrast in percentage for 5, 10, 20 and
40 lp/mm accross the height of the 35 mm film
format, for tangential (dotted line) and sagittal
(solid line) structures, in white light. The 5 and
10 lp/mm will give an indication regarding the
contrast ratio for large object structures.The
20 and 40 lp/mm records the resolution of finer
and finest object structures.

tangential structures

sagittal structures

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