View single post by Eric
 Posted: Sun Jul 27th, 2025 20:14
Eric



Joined: Wed Apr 18th, 2012
Location: United Kingdom
Posts: 4555
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Bob wrote:
Thanks Chris.
I'll contact Sigma to find out how their lenses react to this firmware.

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



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Eric