View single post by Eric | ||||||||||
Posted: Sun Jul 27th, 2025 20:14 |
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Eric![]()
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Bob wrote:Thanks Chris. I’ve rarely found any benefit in updating lens firmware ….unless it was for an obvious manufacturing ‘fault/bug’ discovered post release. However… With long telephoto Sigma lens it was (is?) a common practise to send NEW lenses back to Sigma UK for recalibration. Apparently the lenses ex factory were set to an average calibration. Having your lens adjusted to IT’S optimum settings could make a significant improvement. It did with my 500mm back in the day….but that was the only Sigma lens I ever owned. Last edited on Sun Jul 27th, 2025 20:14 by ____________________ Eric |
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