Questions & Answers for: Sigma auto zoom lenses

sigma auto focus 1:3.5-4.5 i recently purchased a 'sigma auto focus 1:3.5-4.5' from ebay. the lens works perfectly but the switch between manual and automatic focus won't budge from AF to M. is there ...

...auto focus on my nikon d40. In the menu when i try to switch from MF in the custom setting menu, it tell me, "this option is not available with current settings." i have an aspherical 28-90mm D lens. ...

Best Auto focus Tele For Nikon D40 Recently I bought a Nikon D40 ,which is the best auto focus tele lens for D40? Will 70-300 VR AF -S Nikkor be good? hi ! iam too a D40 holder,u can opt for AF-s ...

Is there a manual and auto focus selector switch on this lens? Sigma 50-500mm What fit canon/sigma/ have a A/M switch

sigma 70-210/4-5.6 UC-II AF Does not auto focus any more? Hi Dose the lens make any movement or is just dead it may need a new AF motor

sigma 70-210 UC-II AF does not auto focus It may need a new drive belt

my Sigma 24-70 2.8 macro auto focus keeps jamming Is the manual focus working ok if so the AF motor is faulty may need new gears or new motor

auto focus. it will not autofocus can anyone tell me what i am doing wrong and or where i can download the manuel from thanks The Nikon D40 does not have an autofocus motor, relying on the lens having

...lenses to best buy a sigma 100mm to 300mm and tried it with a nikon D3100 and it would not auto focus, so I firgured the 500mm would not work either. Will this lense work with any nikon digital ...

zoom to 200 Could be, because most camera's only can auto focus till f/1:5.6. And if 5.6 is reached at the focal length of 200 mm, the camera stops it from going to a part it can't be focused. Perhaps