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EXCERPT page containing first few paragraphs. 2020-07-14 11:21:32

Leica 24-90/2.8-4 Vario-Elmarit-SL ASPH
Leica SL

Leica SL: Focusing Errors in the Field

Leica SL firmware 2.0.

In June 2016 I obtained another brand-new Leica SL and Leica 24-90mm lens for testing, to follow up on the January 2016 review. The latest firmware was promptly installed.

Back in Jan 2016, I found unacceptable focus accuracy issues as well as marginal lens performance (documented and shown). I had hoped that at least the AF issues would be resolved. This page shows that those issue are not resolved, and that autofocus is error prone, at least under the outdoor conditions I shoot in.


In discussing focus issues across brands, I often get pushback, summed up as “works great for me”. Asking for more info, I receive back a gradually widening circle of admissions such as “not that I ever did any shooting like yours” and/or “yeah, stopped down”, “in the studio at close range”—and so on.

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Aperture series 3.9,9,13 available in full article
f3.9 @ 1/640 sec, ISO 100; 2016-06-13 16:40:36
LEICA SL (Typ 601) + Leica VARIO-ELMARIT 2.8-4.0/24-90mm ASPH. OIS @ 79mm

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