Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lowepro Vertex 300 AW

I bought this backpack since I was sure that a Nikon 200-400mm VR F4 mounted on a camera would fit in this bag with other equipment. When I originally wrote a review I was still waiting for the 200-400mm lens. I now have the 200-400mm VR lens. It is huge, but fits perfectly in the Vertex 300 AW. I also have carried a Nikon 17-55mm F2.8 lens, Kenko 1.4 teleconverter, Nikon 12-24mm F4 and many accessories. The Nikon 200-400mm lens comes with a pretty extravagant case that holds only the lens. I really needed a backpack that would accommodate the lens mounted on my Nikon D200 camera and an additional camera with lens mounted and accessories.This case is huge, but I probably will not use it if I am not carrying the 200-400mm lens. In that case I would continue to use my Lowepro AW Mini Trekker which works just fine for the rest of my lens and camera combinations.