15-85 or 17-70

Started 3 months ago | Discussions thread
OP Leo_B Regular Member • Posts: 396
Re: Sigma 17-70 C rather than Canon 15-85 IS

Is "tuning" a Sigma lens the same procedure for every Sigma lens? IOW, could the thread you linked be read and applied to any other Sigma lens or would there be variations in the procedure depending on the lens being tuned?

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