Originally posted by joelovotti Recently the auto focus on my Sigma 70-200 HSM has become very slow. What was a second is now 3-5 seconds. It does auto focus but very slowly.
Does anyone know what might be going on?
Should I clean the contacts? They don't look dirty.
Nothing has happened to the lens. It got slow this weekend when I was doing some shooting outdoors in bright sunlight. The lens got very warm in the sun but was in my hands or hanging on my shoulder the whole time. It was not left out to bake in the sun.
Help,
joe
Mine was slow when I got it and then stopped working altogether. I'd recommend sending it in for service.