Excerpt: This is a nice medium size backpack that can accommodate two bodies, lenses, camera flashes and accessories. I use it for weddings, I can move very quickly with this bag. You Can't fit all of your equipment, but at least you have access to your most needed bodies and lenses. Almost forgot.
Pros: Adjustable Harness, Comfortable, Easily Accessible Equipment, Roomy, Strong Construction
Excerpt: I was looking for a backpack to haul my sigma 120-300 with body. You can easily fit that lens plus a pro sized body attached and still have space to fit a non-pro body and an additional smaller lens. I put in the cons it is hard to access equipment.
Excerpt: This is my third Lowepro bag / pack. Bought this to accommodate my new 150-600 tamron lens. That lens, my Nikon d600, and two other lenses + accessories fit perfectly. Spent a week lugging it around southern Florida without major issues.
Pros: Comfortable, Easily Accessible Equipment, Roomy, Strong Construction
Excerpt: I had a flipside 300 for about 5 years, the breast strap buckle broke during the first year but other than that the 300 faired ok, it probably has about a year of survivable use left.I have only used the 400 several times to date, it has a larger capacity than the 300.
Excerpt: I have used this backpack a few times since it arrived. I love how spacious it is and it is extremely comfortable to wear while shooting. It is lightweight so it doesn't add to the weight of my heavy gear.
Excerpt: I do frequent day hikes for nature photography. This bag works out to be a perfect size. A bigger bag would just be more weight and bulk. I generally carry my camera ready to shoot anyway. So that saves room inside.
Pros: Durable, Easy to Use, Plenty Of Room For Gear, Very Comfortable, Well Organized