The pancake 40mmf2.8 is my "casual" lens; whenever I go out on business. It does NOT make others conscious of the long protruding lens when you shoot, and they are more comfortable with a pns type camera. It is easy to just put into any non-camera bag. Just be careful of the screen on cap. It is small, and could get lost. I try to habitually put into my shirt or trouser pocket. Putting on the dining table is NO NO... you can forget. Not even sure how to get a replacement, if you lose it. Moreover, I don't have a filter over it (not even sure if there is one)... fun pancake. Gosh, put some honey on it, perhaps could eat it too!!!