AGeoJO wrote:
This effect has been documented but I am not sure as what contributes to the harsher bokeh though. Maybe some other folks can chime in here....
The harsher bokeh is due to the fact that the physical shutter sits in front of the sensor, whereas the electronic shutter acts as if it is flush with the sensor.
At high shutter speeds the curtains are very lose together (you get a small slit moving up the frame as the closing physical shutter chases the opening electronic shutter). But because the physical shutter is not in the same plane as the electronic shutter the opening (gap between shutters) is larger when viewed from the top than from the bottom This distorts the bokeh from being a nice circle into a teardrop shape.
At slower shutter speeds the electronic shutter is mostly/fully open before the physical shutter starts closing so you don't get this effect.
Apr 17, 2017 at 11:02 AM
Previous versions of Matt Grum's message #14003055 « Sigma 135 1.8 thoughts? AF functionality »
