Great lens with a good price / performance ratio. Mechanically in no way inferior to that of Konsumerlinsen other major manufacturers. No autofocus must be brought into focus manually, which through the viewfinder virtually impossible is. Per LiveView and Lupe no problem, but the trouble you have not done. Simply select the aperture and the Setting the hyperfocal distance to the scalar. As hyperfocal distance the finite object distance is called, when lying at infinity with unsatisfied akzeptabeler blur are mapped. The depth of field extends from half the hyperfocal distance then to the Infinity. Mathematically, therefore results as "HFD" respectively at f 3.5 5.6 8 and 11 at full frame 0.6m 0.4m 0.3m 0.2m, to APS-C 1m 0.6m 0.4m 0.3m and at 4/3 1.2 0.8 0.5 0.4 m respectively rounded. The maximum power of the lens is loud photozone.de in Aperture 5.6 and is pretty neat to aperture 11. This is consistent with my experience, so I shoot primarily with aperture 8 to APS-C, since everything is infinite then sharply from 0.4m to. In poorer Lighting conditions you have to raise the ISO values or something just a step back to Aperture 5.6. On a full frame camera (Canon here) you can use the lens, but the shading is so strong that it really does not make sense and I can not recommend it for. The packaging for Canon is also significantly EF-S, What is the name of the bayonet for Canon APS-C cameras. The objective is making good, sharp images and is under its somewhat exotic scope, or even just therefore, a real recommendation. The price difference for autofocus version from other manufacturers I prefer to invest in Focal lengths which are frequently used.
