First impression after unpacking: Very easy, a lot of plastic, ordinary processing, fully supplied with lens caps, sun visor and protective bag.
The maximum aperture of 1.8 is suitable for "Available Light" photography and targeted use of blurring (so-called. "Bokeh").
This works very well, you can objects or people very nice "indemnify" and play specifically with the blur.
The image quality is very good, of "quite sharply" "sharply" at maximum aperture at f 1.8 through 2.0 to "super-sharp crack" at f 5.6 or. 8
The bokeh is very nice in my opinion and is not comparable with that of a close-up lens; This impression is of course very subjective and that any potential user must provide as his own impression.
However, there are technical limits, which you should be aware.
At least in my camera there in the open aperture Fokussierungsproblemem if I do not use the AF sensor middle, but one of the on-edge AF sensors.
The open aperture produces at long exposures chromatic aberration (CA), so purple fringing on chiaroscuro contrasts. So dim long exposures better then disappear dei CA's.
Another form of CA's (lateral or transverse CA) may occur at the maximum aperture with extreme light-dark contrasts in areas that lie behind the focal point; these CAs occur at the contrast edges in the form of a greenish color fringes.
All three issues affect only the open aperture and disappear as soon as you stop down.
This optic is therefore by no means a "Always top" for the holidays, but a design tool for ambitious photographers (whether "Amateur" or "professional" I let times open), let with which produce unique photos, if you look at the technical limitations (see above) is aware of.
These limitations appear after my experience on in virtually all high-intensity fixed focal lengths in a more or less strong form, so I have therefore made no penalty.
The price-performance ratio of these entered the market only in 2011 look is excellent, especially the optical properties of which is almost twice as expensive optics 50mmm / f 1.4 are very similar from the same house.
Therefore, a recommendation for all who enjoy designing their photos, have the technical limitations are aware and want to buy the whole at a price that can be considered favorable thoroughly.
