Sigma 17-50 EX OS HSM (Nikon) w/ defective AF: Repair or Refund???

Started Oct 6, 2012 | Discussions thread
pixelless Contributing Member • Posts: 612
Re: Sigma 17-50 EX OS HSM (Nikon) w/ defective AF: Repair or Refund???

I´m pretty sure it was just a question of re-chipping it. It´s due to the back engineering done by third party makers on the AF system.

I also think you should give it another try. The lens is definitely a keeper. Very sharp, contrasty, great colors and a nice bokeh.

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