I have a D3100 with the 18-55mm lens kit and a 55-200mm zoom. I am torn between whether to use extension tubes or diopters for my macro shots. (Obviously, I do not have the budget for a dedicated macro lens. I still have to buy a prime lens for other purposes too.) My main concern is that I've read that lenses must have an aperture ring when used with a macro tube. Since there will be no contact for my AF-S kit lens to the camera itself, AF will be disabled needless to say. I've read further that the aperture due to this is set back to f22 resulting to dark photos unless lighting is considered. Is there any practical workaround (meaning affordable or simply cheap) on this? Macro lighting of course is an option. Or am I simply better off using a set of diopters? Your opinions will be greatly appreciated. PS Since these are not exactly lenses but somewhat related, the moderators may freely move this to accessories or photography equipment if necessary.