With the supplied T2 adapter for Canon EOS photographer has major problems to focus a recording sharp. Have test shots of a Siemens star in the center of the image a larger field with an irregular structure cloudy with blurred and sharp parts of the Siemens star. Along the "rays" of the Siemens star form fringing. By replacing the supplied T2 adapter by another T2 adapter with about 0.7 mm lower flange, it may be much better focus. Man photographing after installation of the new T2 adapter the Siemens star, so the blurred, cloudy in the image center has significantly reduced. In addition, the contrast of the recording has been improved, the color fringes disappear and the edges of the "rays" are played back sharp and contrasty. Would Walimex mitliefern priori a better matching T2 adapter, then the optical quality of the lens would significantly improve. The lens then deserved a better rating.
