05-13-2011, 01:52 PM
> I see, but, what if the subject is moving towards / away from the camera... Would we have the same curves?
This would be about the accuracy of the AF prediction. CD AF is surely worse here so far but it seems to catch up.
Can it reach or overtake PD AF ? No idea. I wouldn't sign this with blood. At some stage it is a viable question whether it's "good enough".
> I don't get it Klaus... Does G3 performs AF right after closing the aperture? Because the less amount of light gathering would not help with CD AF either, isn't that right?
I don't know whether the G does that but technically it can close the aperture and focus thereafter. It just need to perform an contrast analysis of sensor data. The effective aperture should be rather irrelevant here (within limits depending on the light level).
This would be about the accuracy of the AF prediction. CD AF is surely worse here so far but it seems to catch up.
Can it reach or overtake PD AF ? No idea. I wouldn't sign this with blood. At some stage it is a viable question whether it's "good enough".
> I don't get it Klaus... Does G3 performs AF right after closing the aperture? Because the less amount of light gathering would not help with CD AF either, isn't that right?
I don't know whether the G does that but technically it can close the aperture and focus thereafter. It just need to perform an contrast analysis of sensor data. The effective aperture should be rather irrelevant here (within limits depending on the light level).