Cotton Carrier Strapshot

Great for quick access.

I originally became aware of this while hiking in the Adirondack High Peaks and saw someone using it. He recommended this and now that I have one I do as well. 

The main part attaches to your pack by tight and secure Velcro. Then on the bottom of your DSLR you screw in an adaptor that will slide into the clip attached to your pack. Included with the carrier is a hand strap for your camera. It makes it easier to grab your camera and slide it out from the strap holder. You slide the camera in horizontally, then turn it so the lens sits vertically. It's pretty secure. I haven't had any issues with it falling out.

The camera doesn't bounce around much when walking. There is also a strap that connects to the camera and the pack so if it slips from your hand or pack it will catch and not fall directly to the ground.  The manual says to hook it to a d ring on the pack, which mine lacks, so I just clip the end to the carrying loop at the top of my pack. There hasn't been any issue with that set up.

There are a few cons.

1. Price. It seems a bit expensive, so shop around. I managed to buy one that was an opened package so managed to save $10. 
2. Pray to God you don't fall forward or hit a wall when walking. Since it is attached directly to you and isn't covered if you fall, or hit anything your expensive DSLR is not protected. Also pray it doesnt rain while it's exposed. It's advisable to carry a case if you need to move it into your pack.
3. If you use a hydration system make sure your pack is able to hold the hose on both straps. I'm right handed, and normally would have my water hose on the left strap because it feels more natural to grab it there. However now the camera set up is on the left, the water hose has to be on the right side. You do not want to have your hose on the same side as the camera. The risk of water getting on the camera is not worth the risk. Just make sure whatever pack you are using allows you to attach the hose opposite from where you have the camera.

If you are looking at this as a way to merely reduce weight this is not a good option as you. The system itself is lightweight, but you should still carry a case for the times you need to store it in your pack.

This is a great system to use that provides easy access when your hiking. You don't need to worry about missing a shot because your camera is right there.

This is a must-have for any hikers with a DSLR camera.

I picked up one of these a few months ago and have used it extensively on my backpack, daypack, and baby backpack. It works perfect for my Nikon D90 and kit or wide angle lens. 

Instead of hand carrying or putting your SLR around your neck, you can securely strap it to your backpack. With this setup the camera is quickly accessible so you won't miss a shot fumbling for your camera. The camera locks into the holder and comes out if you rotate the camera 90 degrees and pull it up towards your head.

It requires an included adapter hub that screws into the tripod screw. The adapter has a tripod screw pass through so it is still compatible with a tripod. Contrary to their directions specifying using a D ring on your pack, I was able to strap it to all 3 different packs mentioned above using each pack's existing tension buckles.