I bought the set for my Sony Alpha 580, as I had after 1 1/2 years and close to 20,000 trips now something ground-in dirt on the low-pass, which was not to be removed with the blower. At first I was puzzled by the quasi non-existent manual, but if you do it the same way as described in the pictures, you can not go wrong. I have 1 Swap and Ca. 1/4 of the cleaning fluid used. As I let the camera are slightly open too long, then only the set had opened, I had after the first attempt an even greater pollution than before. So the same swap again used, this time a bit rushed me and behold: even with blue sky and aperture 22, are now perceive no more dirt, which previously so Ca. from diaphragm 13 were relatively clearly visible. I've let it dry for 5-10 minutes, which is sufficient completely. Also you can inundate his camera with this system is impossible. Since you already have to get in line very clumsy. Thus, I can not understand even the poorer reviews about this product. If you kept the half desert in the camera, it is certainly difficult to clean in this way, the low-pass. ;) Otherwise, it works very smoothly even without exercise. The price I find totally fine. First, it is guaranteed a lot cheaper than to send in the camera, and secondly at least one knows what you do and you do not press any strangers into the hands of the camera. Therefore, full 5 stars!