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Continue to ChatSigma boosts AF speed of 150-600mm f/5-6.3 lenses by up to ‘50%’ https://amateurphotographer.com/latest/photo-news/sigma-boosts-af-speed-of-150-600mm-f5-6-3-lenses-by-up-to-50/
Sigma boosts AF speed of 150-600mm f/5-6.3 lenses by up to ‘50%’ https://amateurphotographer.com/latest/photo-news/sigma-boosts-af-speed-of-150-600mm-f5-6-3-lenses-by-up-to-50/