I furthermore tried to test the accuracy of the 85mm framelines in the ZI‘s viewfinder. In the following shot I have chosen the distance to the window pane in the photo, so that the window approximately filled 100% of the 85mm frame. As you can see the actual photo covers more than the viewfinders‘s framelines. It seems that the framelines are more like „90mm“. Again, only a very simple user test. But it shows indeed that the framelines are only an indicator - not as exact as an SLR's viewfinder.