Sigma 50-500mm OS Autofocus problems @testcams

Sigma 50-500mm OS Autofocus problems @testcams

Uploaded April 2011 | Updated September 2026, 2 hours ago

Autofocus (AF) test of my Sigma 50-500mm OS lens, mounted on a Nikon D7000 with a gimbal head. You can read the details about this test at testcams.com/blog/2011/04/03/sigma-50-500mm-os-autofocus-problems

Sigma 50-500mm OS Autofocus problems

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Sigma 50-500mm OS Autofocus problems