Sat 29-Dec-12 07:32 PM | edited Sat 29-Dec-12 07:36 PM by GiantTristan
Weight is certainly an issue. However, one has to consider the "system weight", i.e. camera plus lens. The D800 and the 24-70/2.8 both weigh about two lbs each. If you replace the 24-70 by a one lb lens, you get a weight saving of just 25%. I don't think you can significantly reduce the weight of a good f/2.8 zoom lens, and this is also true for top level f/1.4 prime lenses like the 24/1.4 or the 35/1.4. Similarly, size and weight of a DSLR are largely fixed by its basic construction.
To get a truly light weight kit one would have to abandon the DSLR concept and stay with f/1.8 or f/2 prime lenses.