I use one when I go trekking in the Lakes and Snowdonia, as stated, it can support up to 3kg, but usually camera and lens comes to about 1/2 that. Its ideal if you want support for your camera and are limited on space and weight in your rucsac, but its not a replacement for a tripod, but then I wouldn't really want to carry a tripod up half the scrambles I did earlier this year in the lakes. Be careful which one you get, there's the SLR version and the SLR Zoom version, the Zoom is the 1 to go for, abit fiddly to setup and adjust, but at least proves a reasonable platform for your camera unless you overload it.