For me sending in to SIGMA for fine adjustment would indeed not come into question because I'm not ready to play tester for and carry out the final inspection of their products.
Abner took completely different: I put an incredibly smart, hard-solid and extremely high-quality processed lens on my D5300 and began in already prepared sets where I really hit the sharpness could tell in a nutshell, to make sample Shoots. Especially at f1.8, but also small and not only with the cross-sensor means, but also with some sensors on the edge.
And admitted the whole cardboard in the basement.
I have a really great WW zoom on my camera, consistently with maximum aperture of 1.8 and so far unique in the world. The quality of photos, even if they are dissected in Lightroom, is more than impressive, as always depends on the DX camera a real asset.
Now I am hoping for a connecting structure of SIGMA in the short telephoto range and in the Style line.
