The Tamron SP 15-30mm F2.8 Di VC USD is quite simply a revolutionary design, being the first wideangle zoom to combine a fast f/2.8 maximum aperture with optical stabilisation. It covers a focal length range suitable for landscape photography, interiors and architecture thanks to the low optical distortion, but can also be used for street photography and atmospheric portraits. The optical performance is exceptional and provides a high level of contrast and detail. The autofocus and image stabilisation systems are highly effective, too. Build quality is high, with moisture resistant construction. It's a large and heavy lens, but great value for money.