I recently purchased a DSLR: Canon 1D Mark 3 which put me into the 'poor-house'... could only afford a cheap beginner lens to get started as I was broke.
Anyhow, buying this lens I wasn't really expecting much but when married to my Canon body I was absolutely amazed with the stunning picture quality.... the sharpness. Bold colors.
Bokeh isn't too bad either but when taking pictures in high contrast areas you'll see that the background appears to be a bit 'choppy'.
I haven't noticed any chromatic aberration in my many thousands of snapshots even in high contrast environments. The Auto-Focus is not always spot on and my keeper rate i'd say is about 85%.
Of course the build quality isn't great. It rattles and feels very cheap. Makes you wonder if this was manufacturerd on a "Toys-R-Us'' assembly line but what does one expect for this price ?
If i accidentally dropped this lens and was to become unusable, i would certainly go out and buy another one.
All in all, for the price I'm very satisfied with the quality of the pictures. Sharpness is most important to me, brightiness and portability. This lens rewards in all those categories.
I'm very pleased with this lens.