Originally posted by tuco Well, you guys must be way more sensitive than me when it comes to size/weight. I put practically all DSLRs in one bucket. It doesn't matter to me if one is 10-20% larger/smaller in volume or weight than another. I place higher priority on camera responsiveness (eg no shutter lag) than to touchy-feely things. Different strokes, different folks and all...
Of course one person uses a different set of criteria than another person for deciding which camera they like the best. Because people are like that. If we weren't like that, we would all drive Camrys (shudder) and eat Big Macs (shudder).
While the linear dimension differences between a K-5 and a D600 are not huge, the D600 is about 40% larger in volume than the K-5. You don't carry just the length, depth, or height of your camera on a hike, all 3 dimensions have to fit in your backpack. The 40% difference is significant. Consider also that for typical K-5 / D600 lenses, the camera/lens volume difference is even larger.
Would the difference be enough to diswade me from using a D600 over a K-5? I don't know; I don't have either one, But I'm willing to do the test if anyone wants to donate.