"Grabby" Sigma 30 focus ring

Started Nov 25, 2012 | Discussions thread
TonyCu Regular Member • Posts: 161
Re: "Grabby" Sigma 30 focus ring

cwood wrote:

I have a 30 that works great but I find the plastic manual focus ring "hitches" as you turn it...if you relax it then will go smooth again...almost like it needs a tiny bit of silicone lube. Anyone else have that?

Manual focusing is impossible with mine, even using the lightest touch. It always 'jumps' over the sharp point. Fortunately I use mine remotely with AF which is good. This has been reported before and I think one forum member dismantled his and relubricated it with some success.

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