I backpacked the Grand Canyon quite a few years ago. You'll see some amazing views that most people just don't see from the rim. I took my 450D with a 50mm f1.8, and that was a light enough setup to work pretty well. I went to a camera shop and bought the absolute smallest waist pack that would fit that combo. Surprisingly, it doesn't take much space.
These days, I would definitely recommend something like the EOS M. The EOS M with 22mm prime is a great piece of kit that fits in a very small package. It's slow to focus, but that doesn't matter when you are taking landscapes. Image quality and the magnesium build quality are top-notch. The smallest case I was able to find to fit the M with 22mm is a Lowepro Dashpoint 20. It's just big enough to fit the camera with lens mounted, and a spare battery/SD card (I wrap mine in a eyeglass microfiber slip case) in the bottom.
The SL1 is another option if you are looking for a small DSLR, but make sure you pair it with a light lens, maybe the 40mm pancake. This would be slightly more expensive though.
LBinAZ wrote in post #17305742
Be safe, stay hydrated & carry some salty snacks, make sure you're shape, get an early start.
Good advice. I was hiking down the Kaibab trail with a group. Each of us had 3L of water, but some people in our group ran out. We came across quite a few people laying down on the side of that trail from heat exhaustion. Electrolytes in the water (or continuous salty snacking) is the key. Start each day before sunrise…