Has Canon solved the PDAF problem?

Started Jul 2, 2013 | Discussions thread
Lightshow
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Re: blue_skies - thanks for the explanation.
In reply to 007peter, Jul 3, 2013

PDAF has an advantage in that it can predict how much and which direction to move the lens to get focus accurately, CDAF has to sample contrast at a few lens positions to figure out where to move the lens and by how much, so there is an inherited advantage with PDAF?

Canons version of OSPDAF uses the central 80% of the sensor as the AF sensor, which means it can track objects better(much like sony's high Rez AF sensor in the A99), works better in low light(0EV), and works better with effectively slower lenses(f11).

cCanon is calming AF is 5X faster than their old CDAF which will make it much more useful, and you can be sure it will get faster with the 7DII's release.

I look forward to their next mirrorless offering, I just hope it's not a halfassed attempt like their first.

the only weakness is that this only works with vertical contrast in subjects, quad pixel PDAF will be the next advancement which will be equal to cross type AF sensors that can detect horizontal & vertical contrast in the subject.

technology is a cool thing, the next few years will see a big change in how cameras are designed.

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