Some good info from the Canon event: F Mode info included

[Elton]

Michael Wisniewski posted some notes from a technical presentation at the NY Canon XH-A1/G1 seminar.

http://www.dvinfo.net/conf/showthread.php?t=79410

There's a brief explanation of F mode.

 

[Drew Ott]

There's some real good information posted there.

 

[MovieSwede]

Looks like one of my theorys were correct.

If they do a progressive scan of a interlace chip, that would be the same as saying we read only half of the scan lines. So 1440*1080i = 1440*540P

But then they use pixelshift and that would give us 540*1,5=810

So the theoretical res would be 1440*810 (1920*810 SDI)

But thats the theoretical resolution. Real life isnt the same. But it seems to fit in the the observation that most of the sub 10 000 cams shoot about the same resolution in progressive mode (when they all use the same amount of digital sharpening).

 

[Noel Evans]

PROGRESSIVE
Pete and I tried to clarify what exactly was going on. The answer we got is:
[*] The chips are interlaced but the cam is reading the chips progressively.
[*] They are pixel shifting the green CCD.
[*] They are slowing down the CCDs as they change the frame rate.

Quote: It's a full frame not 1 1/2 like the XL1s"

Was happy to read this snippet more than anything.