F3.5 aperture throughout the entire zoom range and is perfect for low light photography. This Sigma fast fixed aperture makes photography easier for the photographer who wishes to precisely control their depth of field and also for working with non TTL Flash systems.
Near Mint. Usefull Link. For used Camera Lenses, sometimes you may find some dusts inside the lens. This Dust will no effect your picture quality. If you worry about this matter, we do not recommend you to buy used Camera Lenses.