Why Nikon lens is worse than Sigma?? (D7000)

Started May 17, 2011 | Discussions thread
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TheTeh Senior Member • Posts: 2,293
Why Nikon lens is worse than Sigma?? (D7000)

Went walking around at twilight on Sunday evening in Soho with my newly acquired AFD 20mm f2.8 for a test drive on my D7000. I also have the Sigma 20mm f1.8 but wasn't too happy with its weight and size, and given that I have to use f2.8 to get sharp pics, I decided to try out Nikon's version. Here are few casual examples and some are affected by motion/hand shake due to slow shutter speed.

Funny that I had to dial in focus adjust at -12 for the Nikon whilst the Sigma is perfect without focus fine tuning!

My conclusion is I do prefer the bokeh of the Sigma (more creamy) even at equivalent aperture to Nikon. Sharpness at f2.8 comparable between the two. Distortion is better on the Sigma. If it wasn't the size and weight of Sigma, I would say that the Sigma is a better lens. Any comments welcome!

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