Olympus M.Zuiko Digital 45 mm f/1,2 Pro

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On savait déjà que la formule optique de l'Olympus M.Zuiko Digital ED 75 mm f/1,8 et celle du M.Zuiko Digital ED 25 mm f/1,2 Pro avaient été brevetées par Sigma. Voici qu'il en est de même pour celle de l'Olympus M.Zuiko Digital ED 45 mm f/1,2 Pro.

Ci dessous successivement la formule optique de l'Olympus M.Zuiko Digital ED 45 mm f/1,2 Pro et celle du premier des quatre exemples (les trois autres sont similaires) inclus dans la demande de brevet déposée par Sigma le 24 juillet 2017 sous le numéro 2017-142519 et publiée le 14 février 2019 sous le numéro 2019-023693.

CQFD.

La demande de brevet permet de constater que l'objectif commercialement baptisé 45 mm f/1,2 est en fait un 44 mm f/1,3.

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Essai de l'Olympus M.Zuiko Digital ED 45 mm f/1,2 Pro sur Olympus OM-D E-M5 Mark II par Klaus Schroiff pour Optical Limits :

Olympus M.Zuiko 45mm f/1.2 PRO - Review / Test Report

Commentaire introductif de Klaus sur le forum : "Perfect score ... "

Qualité optique : 5/5
Qualité mécanique : 5/5
Rapport performances / prix : 5/5

Olympus put all the right ingredients into the Olympus M.Zuiko 45mm f/1.2 PRO for making it one of the best, if not THE best, lens available for Micro-Four-Thirds. It is sharp as a tack at all relevant aperture settings. Lateral CAs are low and image distortions are nothing to worry about. Image auto-correction takes care of vignetting but even without the digital helper, it's quite decent considering its large aperture. Another highlight is the quality of the bokeh which is smooth as silk and as good as it gets in a conventional lens.

While some full-format snobs may frown upon the shallow depth-of-field capabilities, the reality is that for the vast majority of use cases, it's "good enough" really. And if you need something like a 85mm f/1.2 or f/1.4 on a mirrorless full-format camera - with an admittedly superior DoF potential - you also talking about system costs (and size/weight) two or three times as high. Thus it's a very different discussion then anyway.

The build quality of the Zuiko is also excellent thanks to a tightly assembled all-metal and sealed construction. We aren't completely sold on the rather shiny finish but that's a matter of taste. The same goes for the focus-clutch mechanism for switching between AF and MF. However, manual focusing itself is very smooth and precise. The speed of the MSC AF is also impressive. Furthermore, it's also a very lightweight and compact lens - making it a joy to use out there.

All in all the Olympus  M.Zuiko 45mm f/1.2 PRO is one of the best lenses that we reviewed - ever. As such - highly recommended!