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Shootout: Leica 90mm f/2.4 Summarit-M vs Leica 90mm f/2 APO-Summicron-R ASPH (Pescadero Creek Grass and Moss)

Get Leica 90mm f/2.4 Summarit-M and Leica 90mm f/2.0 APO-Summicron-M aspherical at B&H

In Guide to Leica, this comparison complements the Green Lichen Barn effort. Together, they both address the same practical question: in what ways is it worth spending for the half-stop faster APO 90mm?

Shootout: 90/2.4 Summarit vs 90/2 APO-Summicron: Pescadero Creek Grass and Moss (M240)

The Leica 90mm f/2 APO-Summicron-R ASPH was used, which is optically identical to the Leica 90mm f/2 APO-Summicron-M ASPH. The R version has the advantage of being directly usable on Leica M or Canon with a lens adapter, or convertible to Nikon mount, and I prefer its ergonomics over the M version.

  
Leica 90mm f/2.4 Summarit-M and Leica 90mm f/2 APO-Summicron-R ASPH
Grass and Green Moss
f9.5 @ 1.0 sec, ISO 200; 2015-04-23 19:26:50
LEICA M (Typ 240) + Summarit-M 1:2.4/90

[low-res image for bot]
Durable and fast, up to 1800MB/s
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