Preview doesn't show the full slide for my Nikon LS-40 / LS-50 / LS-4000 / LS-5000 with MA-20 or MA-21 adapter

Preview doesn't show the full slide for my Nikon LS-40 / LS-50 / LS-4000 / LS-5000 with MA-20 or MA-21 adapter

If you experience the situation that you cannot preview or scan the complete slide, but only a sort of squarish part of it, please check the orientation of the slide in the single slide holder. 

correct position of how the slider has to be inserted into the holder
scanning of full 35mm area possible
slide needs to be rotated by 90 degrees
because if it has been inserted like this, both image borders at the long sides with be cut off



If you need to correct the orientation of the motif on slide to match what it is actually shown, then this is done with help of the orientation tool in the app itself.