N°1003580 · Family detail
OlympusCinema·MICRO 4/3 mount
Olympus M.Zuiko 25mm F/1.8
Specifications01
MountMICRO 4/3
Focal length25mm
Max aperturef/1.8
TypeCinema · Wide · Prime
Weight137 g
Filter size46 mm
Physical length57.8 mm
Min focus distance0.25 m
Max magnification0.125
Aperture blades7
Optical elements9
Groups7
Lens hoodBarrel-shaped, bayonet mount, included
Additional Info02
Category["Micro-Four-Thirds"]
Keywords["Micro-Four-Thirds","Olympus","Prime","Standard"]
Review AuthorKlaus
Review Rating7
Equiv Aperturef/3.6 (full format equivalent, in terms of depth-of-field)
Review VerdictThe Olympus M.Zuiko 25mm f/1.8 is undoubtedly a high quality lens with a tiny form factor. The resolution characteristic is very even across the relevant aperture range. The center quality is mostly excellent followed by a good to very good outer image region. Lateral CAs are low which contributes to the high quality perception. Image distortions are negligible - also in RAW mode. On the downside, there's some light falloff in the corners at large aperture settings. The bokeh is generally smooth although the rendition of out-of-focus highlights could be better. The build quality is very good although some may criticize the lack of "substance", but this is simply a highly compact and ultra light-weight lens. The Zuiko lens uses a Movie-Still-Compatible (MSC) AF which is both fast and silent. Whether movie enthusiasts are really using auto-focusing is a different question but there are no drawbacks for conventional photography anyway. So as far as both optical and mechanical qualities are concerned, there's little to complain really. We just wished that Olympus would have chosen a somewhat faster max. aperture. A 25mm f/1.8 prime feels a little too limited in terms of its depth-of-field potential (in the scope of the MFT format). That being said an even faster aperture would have driven up the price and most users are surely already struggling with the high price of the competing Panasonic/Leica Summilux 25mm f/1.4 ASPH so Olympus' decision to stay at f/1.8 may be reasonable.
Review Criteria{"Build Quality":8,"Optical Quality":7,"Price / Performance":6}
Review Published2014-11-06T12:49:00+00:00
Equiv Focal Length50mm (full format equivalent)
Optical Construction9 elements / 7 groups inc. 2xaspherical elements
Field Notes02
Olympus M.Zuiko 25mm F/1.8 is a Micro Four Thirds prime lens with a bright f/1.8 maximum aperture, suited for general-purpose photography and low-light use. It offers a standard field of view for everyday subjects.
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Other Mounts03
No alternate mounts are indexed for this family yet.