Nikon_DonB wrote:
Hi Don. Welcome to the Hogg. I see you are in Illinois. I'd call Sigma Lens Support first(800)896-6858. They have a local service center on the north side of Chicago in Elk Grove Village(out by O'Hare Airport) called Bigston Corp. They do the service work for many major electronic companies including Sigma, Canon and Epson. They updated the firmware on my Sigma 150-500mm lens a couple years ago. Bigston's # is (847)439-3500. Good people to deal with.
Good Luck.
Thanks for that info, DonB. I'll get in contact with those people. The lens is old enough that I doubt that it is still covered by the warranty and I really have doubts that it is worth the cost of repair -- if it can be repaired.