Olympus Zuiko Digital 25mm Specification Review

The Olympus Zuiko Digital 25mm F2.8 Hot cake lens was declared in Goal 2008 to match with the E-420 ultra-compact DSLR, and consumes a exclusive position in the market as the only set central duration (‘prime’) lens which is included as a kit with searching for camera body. In this it harks back to the 1980’s prime of the traditional guide concentrate Negatives SLR, when digital cameras were provided with 50mm F1.8 (or similar) contacts as conventional, with which aspiring photography lovers discovered their art. That 25mm central duration also matches straight to 50mm on the Negatives full-frame structure, providing the same angled position of view; this is therefore of the ‘standard’ type of contacts, providing none of the viewpoint distortions which is attribute of wideangle or telephoto contacts.

Olympus Zuiko Digital 25mm
Olympus Zuiko Digital 25mm

The term ‘Pancake’ in the lens’s headline provides an idea to its most stunning physical characteristic; it is incredibly slim (just 24mm, or less than 1″) as well as light, making it the perfect supplement to Olympus’s E-4×0 category systems as an (almost) portable, carry-anywhere solution, with all the rate and responsiveness of a DSLR along with picture quality unrivaled by any small-sensor lightweight digital camera. However it’s not the thinnest lens currently available; that honor drops to Pentax’s almost unimaginably slim SMC-DA 40mm F2.8, at just 15mm. Other manufacturers also have their own little primes such as 28mm F2.8s or Negatives F2s, but a Cannon EOS 1000D set with a 28mm F2.8 lens will be completely 25mm/1″ (i.e. 33%) wider than an E-420 with a 25mm F2.8; this mixture really is about no more than it gets for DSLRs.

The 25mm Hot cake is also a exclusive example of a truly ‘designed for digital’ conventional prime; aside from the Sigma Thirty millimeters F1.4 HSM, Panasonic’s Leica-branded 25mm F1.4 for Four Thirds, and the above mentioned Pentax 40mm F2.8, such contacts have been most recognizable by their lack, with the most important digital camera producers choosing to pay attention to more consumer-friendly zooms instead. As such it’s a welcome example of one of small gamers providing a proper substitute unrivaled by companies Cannon and Nikon; however the big query is whether this lens really provides something completely different to catch the creativity of customers.

Key Features

  • 25mm fixed focal length; F2.8 maximum aperture
  • Ultra-thin, lightweight design
  • ‘Focus by wire’ manual focus system
  • Four Thirds mount for Olympus and Panasonic dSLRS

Olympus Zuiko Digital 25mm Body And Design

The most stunning component of the 25mm is certainly its small size; this is one of the actual connections currently available for any install. Despite this it still seems pretty well-made, and with its steel install and use of quality nasty materials for the lens gun barrel it’s certainly a level above certain producers low-end, nasty install 50mm primes. So while it’s certainly ultra-lightweight, it doesn’t experience at all insubstantial.

Olympus Zuiko Digital 25mm Body And Design
Olympus Zuiko Digital 25mm Body And Design

‘Focus-by-wire’ guide focus

The most uncommon function of this lens’s function is the focus-by-wire guide concentrate program, which pushes the concentrating team ultimately via the lens’s auto-focus engine (as instead of the immediate technical relationship found in most lenses). As a impact, the experience of the guide concentrate band never changes, regardless of whether you is set to auto or guide concentrate, or the concentrate has achieved the boundaries of its journey (either close or infinity), and this lack of responsive reviews can be a little befuddling in some circumstances.

Lens body elements

  • The lens features the ‘open standard’ Four Thirds install, currently appropriate for dSLRs from Olympus and Panasonic. Interaction with you is all-Digital, via the gold-plated connections. The lens installs by aiming the red dot to that on the camera’s install, and spinning clockwise to secure.
  • The line is 43mm, which while not exactly common, will still agree to a lot of currently available filtration. It does not move on concentrating, which will be welcome to narrow customers. Do yourself a favor and source a video cap instead.

Olympus Zuiko Digital 25mm Images Quality


One area where the 25mm F2.8 really performs exceptionally well is in its managing of surface. With the sun placed in the top area of the structure, the lens avoids surface very well, with patterning only becoming noticeable at apertures of F11 and more compact (which are not really perfect on Four Thirds anyway). Place the sun just outside the structure, and veiling surface is almost non-existent.

Bokeh Quality

One truly suitable, but hard to evaluate component of a lens’s efficiency is the capability to provide efficiently blurry out-of-focus areas when trying to separate a topic from the qualifications, usually when using a long central duration and huge aperture. Clearly here a 25mm F2.8 is unlikely to win any prizes, and indeed it isn’t the best lens on the globe for acquiring blurry background scenes. It does a fairly awesome job with macro photos, providing sleek and supporting bokeh, however as the qualifications range improves, the bokeh tends to decline. In the increased taken below, the version of the qualifications is overall somewhat unpleasant and annoying.

Olympus Zuiko Digital 25mm Bokeh Quality
Olympus Zuiko Digital 25mm Bokeh Quality Photo By Azis Photography

Chromatic aberration

The 100% plants below are taken from the red-outlined factors indicated on the thumbnail image; red/cyan fringing is clearly noticeable at the center remaining reducing center of the structure, embracing green/magenta fringing towards the sides. This presumably is the investment for such a small retrofocal style.

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Olympus Zuiko Digital 25mm Specifications

Street price • US: $250
• UK: £159
Date introduced March 2008
Maximum format size Four Thirds
Focal length 25mm
35mm equivalent focal length 50mm
Diagonal angle of view 47°
Maximum aperture F2.8
Minimum aperture F22
Lens Construction • 5 elements/ 4 groups
• 1 Aspherical element
Number of diaphragm blades


Minimum focus 0.2m
Maximum magnification 0.19x
AF motor type DC Micro motor
Focus method Unit focus
Image stabilization No
Filter thread • 43mm
• Does not rotate on focus
Supplied accessories* Front and rear caps
Optional accessories LH-43 lens hood
Weight 95g (3.4 oz)
Dimensions 64mm diameter x 23.5mm length
(2.5 x 0.9 in)
Lens Mount Four Thirds