<p>LG I have the exact same problem! I just purchased my Sigma 35mm 1.4 art lens for my Nikon D800 and after doing multiple tests have found that the only reliable focal point is the center, all of my right focal points completely don't work they are off by up to 15 centimeters from what I can tell, depending on the distance. The problem I see is that this lens was not designed to work on the huge 36 mega pixel sensor on the D800-800E, Sadly I just bought the Dock and updated my firmware with no improvement. This same lens works perfect on my D90 because of the crop sensor.<br>
Are there any D800 users out there that have had a good experience with this lens? Please chime in Adorama is going to issue me a replacement but I'm thinking after my experience to opt for a refund sadly...</p>
