First of all I had in mind something if my Alpha 77 with attached telephoto 150-500 mm would fit into it. But there were no problems. The whole interior layout can be changed completely, so that you can set up all possible variations for extra lenses or flash, filters, etc.. External loops for a tripod / monopod are also available. Overall, the photo backpack makes a high impression, and the shoulder straps are padded very pleasant. Disturbing smells were not observed. Conclusion: Ideal when's the big Tele and additional lenses for nature photography is to go to the site!