i have a version 4 35mm summicron f2 which seems to have an EXTRA wider stop then f2 its hard to explain, but i can set the aperture at f2 as seen in the left side of the attached photo and then i can set it to something wider then f2 which is not marked on the aperture dial as seen on the right side of the image. when i do this and look at the aperture blades, it does indeed look to get wider when its past f2. what does this mean!?
sorry for the bad pics, (it was my cellphone camera) and i can take better pics tonight if anyone needs clearer images to make out the problem here.