Just got the Olympus 17 mm, man is it small!! I would like to get a 'pinch' type of lens cap for it, similiar to what Nikon uses. I'm not sure what size the lens cap that would be. The specs say that it takes a 46 mm filter...don't know if this tells me anything about the size of the lens cap. Does anyone know where I could get a cap like this for this lens? And if not, can someone tell me what size lens cap I should be looking for? Thank you.