Today I tested out a camera bag to hold my DSLR. It's a small Tamrac camera bag that I mounted to a hip belt pad from a camping backpack that I don't use anymore. Many years of being an avid backpacker has left me with a bunch of webbing, buckles, and straps... and crappy knees ensure that it gets little to no use.
Recently I've been moving gear off of my back and onto my bike, which I think makes riding much more comfortable. It's been surprisingly nice to ride without a Camelback. The one thing I'm not sure about putting in a bike-mounted bag is a camera. It just seems like a DSLR would need extra shock absorption... the kind provided by my arms and legs.
I had been looking around for a pack to hold my camera, and just my camera. All the waist packs I found online or in stores were too big and bulky, and so were the backpacks. I wanted a minimalist camera pack that sat low on my back, and I just couldn't find one. So I made my own...
I'm sure there will be improvements made, but it worked really well for the first time out. I'll likely add some more attachment points between the camera bag and the hip belt. I may also try configuring it like a low-rider backpack with some lightweight shoulder straps (sort of like the packs Wingnut makes, if you are familiar with them).