This evening I got to the last exposure on my Minox EC, and was taking out Minox tank, developer etc, ready to develop the film but when I pull open the camera,, oops, there was no film in it ! I did quite a number of tests on that "roll of film" which I thought was in the camera. What is your method of indicating the camera is empty ? I did the opposite a month ago with my TLX, I push-pull and excercised the shutter, believing the camera was empty; but suddenly I remembered I put a roll of factory Agfapan APX in it some times back ! Unlike Minox GT-E or other 35mm camera, if you are in doubt you can always turn the rewind button or peep at the cartridge window. But there is no provision of that sort. The new ECX corrected this by providing a "film in camera" indicator. What is your method of marking a Minox 8x11 camera as empty or loaded ?