Originally posted by cali92rs Originally posted by Sol Invictus The D600 has a metal lens mount. The front of the camera is not magnesium alloy like the D800 but the same advice applies in regards to heavy lenses. Even on a D4 you have to support a big lens with one hand.
My apologies for being confrontational but that is clearly a plastic mount. It may have a metal cover plate, but the support is plastic.
I think everyone knows, you're supposed to support your long lenses. But apart from that, I know pros who have used longer lenses enough to stress and weaken the metal mounts of their cameras. What I'm saying is, if you're that guy, the plastic is going to lose rigidity sooner.
I'd be happy to see engineering tests that show I'm wrong, but usually plastic components are introduced to reduce manufacturing costs, not to increase longevity or performance. I'm not opposed to this being an upgrade, but, I'd have to see the test results that that suggest it might be true, or at least a statement from a Nikon engineer stating that it's true.