Took this backpack on a trip to Southern California. It had plenty of room for my DSLR and two lenses in addition to my DSLR camera bag that I use on the go. I was also able to fit my laptop (Macbook Pro). The backpack was comfortable, nice padding, and the waist belt did not get in the way. Can't wait to try it on a real backpacking trip.

Overall: Has a lot of clever features, but it's akin to ordering a minivan or station wagon engineered by someone who's never had kids.

Pros: Element-sealed camera compartment zipper is very effective.

Comfortable at least for medium or smaller people (I'm 5'9" 140)

Camera compartment is well-sized. I used it with a Canon 20D and it's more than large enough, but secure. I've also used it to carry a Nikon D2Xs and Kodak Proslr-c (full frame cameras), where the compartment was a little snug but workable.

The rear opening of the pack (this is how you access the main body) includes two partially padded zippered sleeves, which are great for carrying filters small hoods, extra batteries and the occaisional charger without hurting your back.

Tripod carrying is easy and comfortable on the sides for smaller tripods.

Except for the front outside pocket, the pack is padded, so its great for carrying lenses, although I wouldn't attempt carrying anything longer than Canon's 70mm-200mm f2.8L because of the space the camera compartment takes up.

Not American-made. It IS made in China.

The built-in pack cover is great and attaches easily in three places.

Cons: The pack could be larger without compromizing utility or comfort, and is not practical for a full day hike (of 15 miles or more).

Lack of dedicated sleeves for lenses

Only smaller format and backpacking-variety tripods fit with this pack, it's not large enough and does not have stays and therefore is not rigid enough to carry a medium-length tripod, although you can get away with a monopod.

The pack will always hang a little low.

The tripod carry on the bottom is not secure enough and the tripod WILL smack the back of your legs if you use it. The worry isn't so much that the tripod will fall off, it's that it swings around.

The camera compartment takes up a lof of space in the pack and makes packing slightly irritating.

Stiching on the pack is a 7 out of 10, it does the job, but even with moderate packing, the white seams/stiches become visible and therefore are a bit unnerving.

The removable camera compartment attaches and detaches with the same clips that the shoulder strap attaches with, but this also means that it only has a shoulder strap and offers little to no protection from the elements other than impact when removed and carried separately.

The velcro removable camera compartment door(separate from the zippered top of the pack) can often get in the way of the zipper, especially when carrying full-frame cameras.

Additional Comments:
If you are hiking in good lighting conditions and don't need a tripod, a couple of nalgenes easily and will securely fit in the sides, and you will be very able to throw in a rain jacket and a little bit of food, but if you carry more than a medium lens and a less-rangely zoom lens, this is not your pack.

Here's the scene: I've got myself a brand new camera and this brand new Quantum Camera Pack. I'm off on a weekend in the Berkshires with friends. I leave the pack in the car, so nothing will happen to it. Someone decides to be "helpful" and, thinking I've left the bag unintentionally, moves the bag (with brand new camera) from the safety of the car, to the exposure of the field. When the thunderstorms hit, all I thought was how glad I was that my backpack was safe and dry in the car. When I went to find it, I was certain my camera was done for.

As it turns out, the water-resistant camera pouch outlasted a good hour of driving rain, and my camera was find, even without the storm pouch wrapping the pack. While I won't be leaving it out in the rain again, It's nice to know the bag will protect my gear.

I just did a short hike in the Grand Canyon (rim to Indian Gardens) and I would have liked to have had this pack with me. For that hike I used a Camelback Blowfish with a 100oz bladder. However, the MountainSmith would have worked better for me. It has space for plenty of water and if you have a CamelBack Stowaway bladder (70 or 100 oz), that will attach easily to the Mountainsmith.

The nice thing about this pack is that the camera slips easily into the weather/rain resistant top compartment and there is room for 2 other lenses in a compartment that is easily accessed on the back of the pack. When hiking I only carry two lenses plus the body - if you are looking for carrying much more gear than that you will need something else.

As to adequacy of volume for a day hike, it has room for a shell, food and other gear. It may be a tight fit, but no more than you'd expect. Access to the main compartment is through the back of the pack.

The pack has outside mesh pockets and compression straps and plenty of attachment points. The pack is built with contours that sit on your hips and the hip belt, though not fancy, is made of 2" wide webbing and has a substantial Rock Lobster buckle. The tripod/gear straps on the bottom are handy and well made.

There is also a wide rubber coated webbed handle at the top of the pack for grab and go carrying.

Materials are high quality and construction/stiching is very good.

This is a great pack for day hikes and one camera/lens, tripod. Zippered pockets/straps/compression straps are well designed and positioned, the built-in raincover comes in handy, and the pack straps are comfortable. Zippers are strong,sealed, and easy to open. There is no internal frame so the pack will sag some if the main compartment of the pack is not filled. Back panel access to main compartment is useful. Enough room to fit shell, fleece jacket, lunch and water, first aid kit, compass, knife, few other small things. The supplied camera pack will fit a Nikon d200 or f100 with 28-85mm lens. I bought the larger Mountain Smith Beacon II Medium to fit the body and 18-200mm lens.

I haven't traveled with this yet but I am liking it so far. I did have to order the bigger SLR camera case, but it snaps inside where the one that comes with it goes. You access the entire pack from the top or the back, so it is good for theft issues. It is slim, so low profile and i am not hitting things when i turn around. So far have put camcorder, SLR camera and lens, prob about 15 lbs worth, and it still feels nice. Good for carry-on or small day pack, not for long term i think.

Nice pack, ideal for a day hike and minimal camera equip. Incorporates a removable camera bag accessible from the top of the pack.Room enough for an SLR with one lens (medium tele) and extra stuff like filters lens cleaners etc... Overall the pack is light, comfortable, soft, has good ergonomics and looks. With the removable cam bag up top there's still enough room for lunch/snacks, a light jacket and a few other items. Main entrance to the pack is behind the pack shoulder straps, which I really like.