I mean, my utensils I bring in, the much I have not yet: My EOS550D with a 18-200er lens, even an additional -55er lens, then a Speedlite flash (which also fits in the front front pocket), add. Camera battery and 4 AA batteries for the flash of course no problem. Secondly, the bag should also not be too large, one would like to remain fairly mobile, despite camera. And you do not always carry around all yes. When I'm on the mountain, I'll probably need no flash! Conclusion: the bag is in medium size and should be sufficient. I am very satisfied and will keep it!