Upgrade of D700 to D800 - Handheld Question

It's a good question though. Because it starts asking other questions, such as "why". And that provides learning, which is why the poster asked the question.

The reason you ask EXPERTS is because they have EXPERIENCE.
I don't understand why you would tell someone that their question has no validity unless they take the time to self-teach themselves. The whole idea for the question is to gain knowledge from someone else's experience. I don't think that I would gain enough useful experience from a single rental, so now I have to rent it several times, plus the drive there and back to the camera store, plus what experiments do I choose to do, what settings should I use to determine all this?
It's far easier to ask for advice. It doesn't make someone lazy, it's actually quite intelligent.
The EXPERT opinion he needs though is probably going to be buried in random tangents that don't help him answer the question...

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There are 10 types of people in this world, those who understand binary and those who don't.