The Zuiko Digital 25mm f/2.8 is a

Four Thirds System The Four Thirds System is a standard created by Olympus and Eastman Kodak for digital single-lens reflex camera (DSLR) and mirrorless camera design and development. The system provides a standard that, with digital cameras and lenses availa ...

standard-series lens manufactured by

Olympus Olympus or Olympos ( grc, Ὄλυμπος, link=no) may refer to: Mountains In antiquity Greece * Mount Olympus in Thessaly, northern Greece, the home of the twelve gods of Olympus in Greek mythology * Mount Olympus (Lesvos), located in Les ...

, sold both separately and bundled in a kit with the E-420 camera. It is a "pancake" lens, a very compact

prime lens In film and photography, a prime lens is a fixed focal length photographic lens (as opposed to a zoom lens), typically with a maximum aperture from f2.8 to f1.2. The term can also mean the primary lens in a combination lens system. Confusion be ...

designed to be easily portable. When released on the market in 2008, it was one of a very few prime lenses designed explicitly for digital cameras, and the only one targeted at the entry-level consumer market.Review on dpreview.com
/ref> It was praised by reviewers for its small size and the sharpness of the images it produced, but at the price of relatively high

chromatic aberration In optics, chromatic aberration (CA), also called chromatic distortion and spherochromatism, is a failure of a lens to focus all colors to the same point. It is caused by dispersion: the refractive index of the lens elements varies with the wave ...

and

barrel distortion In geometric optics, distortion is a deviation from rectilinear projection; a projection in which straight lines in a scene remain straight in an image. It is a form of aberration in optical systems, optical aberration. Radial distortion Al ...

; overall, the image quality was seen as no real improvement over the normal Olympus 14-42mm f/3.5-5.6

kit lens A kit lens is a "starter" lens which can be sold with an interchangeable-lens camera such as a single-lens reflex camera. It is generally an inexpensive lens priced at the lowest end of the manufacturer's range so as to not add much to a camera ki ...

References

External links

Official Webpage
* Pancake lenses 025mm F2.8 Camera lenses introduced in 2008 {{photography-stub