... The 800-euro wide-angle zoom shows very good resolution and contrast values at 11 mm centre, but the edge drop of the contrast is clearly too high at both measured apertures. The 11 mm focal length corresponds to 15 mm on a KB sensor. At 15 mm, the values for the centre of the image are also very good, but again drop slightly when stopped down...

The new Tamron 11-20mm F/2.8 Di III-A RXD combines an exceptional focal length range that calls for creative image composition with high performance. In view of the excellent test results as well as the very good workmanship, the price is quite fair.

The fast Tamron 2.8/11-20 mm Di III-A RXD for APS-C is not only mechanically but also optically very good.