I've gathered the lenses from three major brands of diposable cameras. Non of them have made the dot size any smaller than it was without it. I have even got the glass lens sets, which are three lens sets from cheap 35mm cameras I found at the good will. No luck with them either. In fact some of the plastic lensers from the disposable cameras had to be held a good two feet from the laser so mounting would be stupid. Has anyone actually made this work and if so what brand of camera did it come from. That would make a possible difference from what I've tested.