I studied Physics at UC Berkeley and then worked at LBNL. None of that really helped me understand some of the camera and file stuff until I actually worked with it, using the different cameras, digital backs, and software applications that are available. I'm not at all saying I know more than you, however sometimes I read your stuff and just wished you actually used some of the gear. Yes, Yair is a representative of a company but he actually takes real pictures using the stuff we talk about. As much science as I have been around, I really go by experience more than anything when it comes to gear. Most theory's fit ideal circumstances - the kind you can set up neatly in a lab, but out in the wild, its rare to find such ideal circumstances and there are a lot of surprises. A lot of you can make decisions by looking at dark current and read noise values, but I get my hands on the stuff and test it. And probably all of its moot, because none of you will ever be trying to do use these products for anything real anyhow. It's all just a fun exercise to push data around. I try my best to not talk about stuff I haven't personally used. I'll probably end up with a D800E and if so then I'll be able to make some real comparisons to my different digital backs.