New answers tagged focus
No, this is not diffraction. Let's start by recalling how the image is formed by the lens (focused and defocused): Each point of your large aperture lens contributes to just one point of the defocused image: (by the way, this also shows why aperture size affects (de)focus) And what happens if you place an obstacle (your hands) near the lens? Not all ...
As you write the noise level is bound to the refresh rate. If you have difficulties to focus, use the digital viewfinder.
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