In other news, I heard a very interesting bit of information just now...
The e-p3 and all the new bodies utilize IR focussing (through the lens) alongside the regular focussing system - kind of like the hexar AF. This is why it uses a dual processor - to handle AF processes. Details are as follows:
(1) TruPict VI consists of two cores. "Left brain" is for image processor, "Right brain" is for Focus Processor.
(2) The new Focus Processor:
a. During focus attempt, image is recorded twice: in visible band (R-G-B) and IR band (R-IR-B) and stored in "buffer memory".
b. First image ~540nm will be "overlayed" with second image ~900nm.
c. Predictive focus is opted from the "overlayed image"
(3) Tweaked sensor: Olympus adds IR channel onto Green channel in RGB sensor. the tweaked channel occupy approx. 50% area at the center and in circular shape.
(4) Microlens design: IR band should not be filtered.
(5) New lens: Coating should allow IR band to enter the sensor. Previously, Olympus patented special glass (in 2002) and coating (in 2008) to block IR band completely.
This patent also shows that Olympus (E-P3) will have IR assist focus.
(from
here
I really hope this is true - from what I've heard about how good the new AF is, I'm fairly sure it is indeed true.
