My understanding is that Phase is much faster but less accurate. Remember,
Phase uses sensors in the body while Contrast measures off the sensor - it has
to be more precise but the sensor has to be exposed at the moment of focussing.
That's why the 4/3rds consortium are so keen to get contrast detect working
well in an 'SLR'.
Andrew Fildes
afildes@xxxxxxxxxxxxx
On 18/04/2011, at 6:35 AM, Chuck Norcutt wrote:
> Phase detection has historically been much
> faster and more accurate than contrast detection.
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