I will be packing pretty light until it comes to electronics for a long trip. I'm a wannabe pro photographer/blogger/writer and that's a large part of the satisfaction that I get from travel so that stuff stays. It's not ridiculously heavy but once you add up a DSLR, 3 compact prime lenses, a small but real tripod, a 7" tablet, solar charger, GPS and maybe another item or two it adds up.
As far as camping stuff goes I will be traveling similar to when I was thru hiking and got my gear down to the 10+ lb range. 1 lb tarp, ultralight (but warm) sleeping bag, REI neoair pad (a new luxury), alcohol stove and many other lightweight options.
I've always found that the best way to cut weight is to take a look at all of the little odds and ends that get thrown in because they are small. This stuff really adds up and usually you don't use much of it.