Serious differences to focus Nikon lens!

First of course I want to say that the SIGMA is a great lens. Of course, it depends on the claim, because they are put in the lens and especially to yourself. Mir is the sharpness extremely important, especially for portrait photography, where the eyes are usually the decisive focal point.

Now for the review:

Processing and HANDLING:
The build quality is definitely sensational! I like the rubber from Sigma. It feels so great to work with. Focus and zoom ring has a nice
Resistance when turning! The length is actually great - nice and short ...

Autofocus:
Fast, accurate and completely silent thanks to HSM. Even with continuous shooting series super (8 frames / s, continuous Focus - rennender dog, blasting Kranich)

BOKEH:
Toll, at f 2.8 beyond reproach!

IMAGE QUALITY:
Sticking point # 1: I have always very slight streaks, found almost like a slight blur. Especially at the edges of z. B .: hair. In sunlight, a little stronger. When NIKON no trace of it! Tried 2 SIGMA models. My, I've sent back and one from the merchants. The NIKON is also somewhat more neutral in color.

Sticking point # 2: The focus, sharpness !!! Quite extreme differences (See the 2 photos I've added to the gallery) and that was the reason for me to make the additional investment!

Sticking point # 3: The image scale. The NIKON you're at 70mm 30% "closer" to the object as the SIGMA !!! Although both lenses are designed for full-frame! Even with an APS-C camera there should be no differences between the two. In addition, the Nikon has a lower close range. So you can rangehn much closer!

An image stabilizer have not both optics.

Go to the dealer and necessarily makes direct comparisons, it is blatant! I had planned to buy a SIGMA 70-200 2.8, which I leave now and prefer to invest more in my 24-70 2.8 me. I'm a no compromise!

My camera is a Nikon D300.