There are great options for smaller mirror less cameras today that provide all the artistic capabilities of traditional SLRs. For instance, the Sony A7R has a full frame 36 MP sensor, and good options for lenses. Probably 1/2 the size and weight of traditional SLR, with no sacrifice in features & function. Many other options for APS-C Size sensors for less than $400.00 with many lens choices.
It can add up to significant $$$, but if you happen to be ready to upgrade cameras something to think about.
SONY A7 (16.7 oz./474 g with battery and card, with a Nikon F adapter weighs about 18.1 oz./515 g),
Nikon D600 (30.0 oz./850 g with battery and card)
12 oz, or 335 grams difference. Everything else in your photo kit will weight the same, or you are using inferior glass (which will always weigh more than the camera). And the $1000 the Sony costs more than my camera puts it way off in UL gear pricing territory.
