I am owner of the Olympus E-510 Double Zoom Kit and I've bought this bag to and am very satisfied. The dimensions are (roughly with Linial nachgemesen): 20x20x12. In the case, the second lens are removed with a Velcro-intermediate part from the rest. The great thing about the case, which at her side is a zipper, so you can take out of this lens then the side without having to tear out the hook and loop fastener each time. The camera with screwed second lens then fits into the other part of the bag. For the 510, the bag could be slightly larger, but it is also so quite well. At the front of the bag that can be closed by a Kombi with Velcro and clip closure, moreover, is still a small pocket in which is a Ersatzaku and a second memory card or similar place - even here there is a second "network specialist". The shoulder strap can be adjusted in length highly variable - only gripe is that the bracket here made of plastic and not made of metal. Otherwise, the bag is not very valuable and well padded for the Doublezoomkit one has good space for more equipment or bigger Objetkive but is likely to be too tight. Overall, I am with my new travel companion but very happy and hope that I could help with this review!
