Fix Fault Sigma

My Sigma 170-500 lens is causing my D700 Nikon to refuse to work when this is fitted. Any quick fixes please. Display shows EE. Cheers Peter Howe

Like Howard I am having the same problem with my 18-250 lens

i've had my sigma 18-250 lens for over a year conected to my canon 40d everything was fine untill now. it has thrown up an error on the screen of my camera " communations between the camera and lens i ... more

My Sigma lens (used with a Canon 10D camera) stopped down one day automatically as required, but remained stuck there. Nothing I can do frees it up. What can I do? It's stuck on about f22 at the momen ... more

i have a sigma auto focus 75x300 apo lens and my photos as a haze on them how can i clean the lens inside i can see its a bit foggy.thank.john

My Sigma 28-200mmD Asperical lens has decided to focus only from 1.5-2.0 m. It just seem to meet dead block either doing it manually or on the camera on auto focus. Do I just chuck it away since a rep ... more