Questions & Answers for: Sigma focus problems

Broken? My lens refuses to focus, either manually or on automatic. Not quite sure what the problem is, but I'm assuming the problem is mechanical. Any suggestions on how to proceed? The body seems to ...

...focus sharp at 500mm anymore. I've taken a lot of pictures with this lens with no real problems until now. I've tried it on other canon bodies with the same results. Its just a soft focus. Never been ...

Front/Back Focus Problem at Sigma 30mm F1.4 Lens I just bought my Sigma Lens 30mm f1.4, i just realised that it has minor focusing problem. With apperture open wide (that's f1.4) and my subject ...

sigma 50-500mm auto focus problem I have a sigma 50-500mm.The auto focus stopped working.Can any one help?please. Hi is the manual focus working from inf to close focus and not stoping then it needs a

lense will not focus manually, only on auto focus, using a sony alpha dslr Having gone over a month with no response, I assume this is no longer a problem.

...focus problems with my Sigma 70-200mm HSM lens. Since there is no Sigma support here in Beijing, I took a look - and fixed it.Here is what I did: On the front of the lens barrel is the rubberised ...

When using Sigma 8-16mm F4.5-5.6 DC HSM on Sony A55, the focus icon flashes indicating unable to focus. However, after switching off and on for three times, the lens seem to be able to focus. Anyway ...

Who can fix my Auto focus and i think the aperture not working Your problem may be a broken zoom ribbon. If the lens works OK in manual focus this could be it. You'll need a professional repair which ...

The lens does not focus manually or automatically. ARe we doing something wrong Hi. I have a lot of experiencie repairing Sigma lens. In this zoom 150-500, the problem is located at the focus ...

auto focus will not work on my canon 40d First of all you need to clean the connectors on both the lens and the camera. Do this by using a pencil eraser being careful not to get bits in the camera or ...