I had some fun with Ferrari F1-75 toy and my Leica M + Leica Elmarit-R 100mm f/2.8 APO Macro.
There are many promising solutions to clean your sensor but all failed. I have tried 3 different methods and non of them worked. I have spend money on specialized vacuum that could not do anything, I have used a silicon sticky method to take dust
The idea behind this experiment was to test the maximum zoom level I could achieve with Leica APO Macro-Elmarit-R 100mm f2.8 which by itself gives 1:2 magnification. With the ELPRO adapter it becomes 1:1. The 2x extender gives a little more zoom...