Issue with Color noise @ 1000 Iso Canon 5D MarkII, 50mm f1.4, jpg.

[Fiendish Astronaut]

Ok, I have a question for y'all...

I remember on the 40d etc. when they came out, and we were able to set the camera to half stop ISO's and the like the off ISO's (such as 600, rather than the 100,200,400,800,1600 etc.) were noisier. Is that still the case or has that been fixed with the camera?

At the time I believe a 1200ish shot would have more noise than a 1600 shot... thus I'm wondering if this could be part of the "problem"

I don't know about this, but I wanted to throw it out there.

No way! I need to find out of this is true. Got some evidence or do I have to do loads of boring test shots on charts?

I have to say I'm dubious...