This lens hood is very fit, it fits easily into the lens and snapped a precise, if you have the trim ring away. If not in use, do I fit it around simply wrong. So I have always. I swear on "Geli" because they protect in addition of holding of stray light and the lens. If I anecke somewhere, the diaphragm is scratched and not the front lens. That's why I do not see it well, to spend much money for such a product. ;-)
Another nice side effect: the camera can be by the rectangular format now perfect stop on flat surfaces without the risk that it tilts forward over. The GeLi is so to speak a base for the lens.
Conclusion: The absolute must-have for owners of 14-42mm II (R)!