If this isn't the proper thread please direct me. My question is why do you think that Zeiss hasn't produced an auto lens, to fit a Nikon or any camera surely they have the expertise. I realize that they are a smaller company then Nikon but, you would think technology should demand an auto!!! With the answer below then why not for Nikon as they produce a mount to fit Nikon's??? Thank you Daniel for your quick response.