The camera bag I use for the Olympus E-System camera PL 6. With lens attached, the camera fits in exactly. If you want to have the camera and not much else doing just that bag is ideal and as compact as the camera. A spare battery, a two filters and an SD card but would also fit in. Class is also the holder mechanism by which either classic can carry over your shoulder, on the belt or backpack strap the camera bag.
For a larger shooting, where you can still carries all kinds of accessories with it, the camera bag is individually unsuitable. However, it also buys you more is not it. Processing and price / performance ratio vote.
