Imaging Resource posted a very detailed analysis of the new Sony 100mm f/2. 8 STF G Master lens and concludes: The Sony FE 100mm f/2. 8 STF G has a physical aperture of f/2. 8, but exposes like an f/5.
6. And when it comes to DOF, it shoots like an f/4, but produces some of the most amazing, […]
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