I buy this bag think that I could get my 40d with a 28-70mm zoom mount -lrb- with lens hood -rrb- and then my other 3 lens into the bag . it turn out I could not include my 170-500 Sigma lens . I put it back in its original bag and hook that bag to this bag . I have to take out just about all of the divider as they come . I be able to get my camera with the lens -lrb- no hood -rrb- and the battery grip into the bag , my 70-200 canon l lens , my flash and my 100mm macro Sigma lens into the main compartment . the three lens hood be all just lay on top . the other pocket and such be fine . I be just very disappointed with the room of the bag inside . I think from now on I will have to go to a brick and mortar store to see the product and buy it there .