[Cale Mooth] "HDCAM SR records virtually all the information the image sensor can throw at it at 4:4:4 and full 1920x1080 HD resolution.
As a result, the HDCAM SR format records nearly 3 times as much information as the HDCAM format."
HDcamSR has two data rates, most applications use the 440 Mbit/s mode, while you can utilize the 880 Mbit/s mode via dual link SDI...HDcamSR can also record in Y'CbCr or RGB (4:4:4 would be used with RGB recording).
HDcam is 1440x1080 at color subsampling of 3:1:1 as Cale said, with a bit rate of 135 Mbits/s.
HDcam is also limited to 8 bits of palette precision (linear) while HDcamSR can record 10 bit log.
TimK,
Director, Consultant
Kolb Productions,
Creative Cow Host,
Author/Trainer
http://www.focalpress.com
http://www.classondemand.net