The Olympus 14-42mm is the standard lens which Olympus supplies with their DSLR cameras, including the E-510, E-400 and E-420. This lens is remarkably compact in design and I was told by the salesperson that this lens is the smallest and lightest DSLR zoom lens currently on the market, which makes it ideal for the operator who requires a very portable camera and lens. Despite its very small size, the 14-42mm exhibits a number of great features. These include two aspheric elements and one extra-low dispersion (ED) glass element. The salesperson informed me that the Olympus 14-42mm lens also incorporates a circular aperture diaphragm, to provide good rendition of defocused areas of the image. I personally like this feature and consider it to be one of the reasons for buying this lens. The lens also incorporates an internal focusing system. There is a proper manual focus ring and a non-rotating front element, which is important should the operator choose to use a filter.
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