Great hard and high by growing

I have been looking for an alternative to the Canon 16-35mm / 2.8L USM II and have the offered here Tokina 16-28 / 2.8 extensively in practice and in the laboratory on both full-frame and APS-C investigated sensor and am a little disappointed. The Canon distinguishes the edges fairly soft and is for me as Qualitätsfan therefore not really aktzeptabel. Especially with 16mm falling in many landscapes on unpleasant.

Visually, the Tokina is unfortunately not much better, it draws very soft, especially in the open aperture over the entire image area increases, however, then dimmed rather quickly on very good values. The problem lies in the susceptibility to lentigines, which are so pronounced that one already has to accept Lensflares even without direct sunlight the screen. In darkness, with artificial light sources have all these rainbow-like circles. Absolutely inaktzeptabel.

From handling have to accept significantly more weight, because it is also the volume considerably bulkier than the Canon. Because of the built-Lens Hood can no filter fix.

Dimmed and on cloudy days you can achieve good results, but a revelation of the lens is not really. My advice: Stay away, only because of the extreme Lensflare susceptibility. Seeking further for a good wide-angle lens for Canon but realize that you have probably dodge necessarily in the expanded wide angle to more expensive fixed focal lengths, for example by Zeiss or absorb too chunky Canon 14mm / 2.8L USM II, but these are really expensive.