I read the announcement and quickly looked at the B&H website comapring the D600 specs to those of the D300s and the D700. Though comparable to these cameras as to their dimensions, the D600 appears to be approximately half their weights. It makes me wonder as to how much of the D600's internals are plastic vs. metal.
I personally prefer a camera body with heft due to the size of my hands and because weight never really bothered me. I still intend to look at and handle a D600 at the camera store so this is just my initial observation.
>Though comparable to these cameras as to their >dimensions, the D600 appears to be approximately half their >weights.
Not really half...
According to the official figures the D600 is just over three-quarters the weight of the D700, and over nine-tenths the weight of the D300. The figures (with some others for comparison) for body weight without battery, card, etc, are:
> You want heft? You need to get a Nikon pro body dSLR. A pro body will definitely help you balance your heavier Nikkors. <
My first professional Nikon was an F3HP with an MD-4 motordrive and a MK-1 firing-rate converter for the vertical shutter release. Paired with a 135mm/f2.0 MF lens, that was heft! (Using that combination would strengthen my tricep and bicep muscles.) Prior to that, I'd use a friend's F2SB with the MD-2 motordrive - the one with the 10- or 12-battery pack - and the auto-exposure attachment, sometimes paired with a 300mm/f2.8 telephoto - that was a workout.
My goal is a pro body DSLR. Maybe I'm ancient, but I still equate weight and heft with build-quality, reliability, and longevity. When I asked the counter-person about the reliability of the Nikormat FT-2, my very first Nikon product, that I wanted to buy, his answer was, "Use this camera to drive the tent pegs and to then photograph the camp site."