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Sigma 150-600 C focus help
Sigma 150-600 C focus help tl;dr focus on my sigma 150-600 C jumping around like mad and will not focus. Isolated the problem to the lens. Think it may be moisture but have doubts about that. I have a Sigma 150-600mm C for EF mount. I use it on an R7, and it has worked flawlessly for months. Today, I took it out and it simply wouldn’t focus. The motors work, but it wildl...
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