That's a great example!
However I must warn people this design is not good for everybody. I have a 4x5 version and my odd eyesight does not work with it. Yes there were corrective diaopters but they even more rare. However the 4x5 Polaroid MP3 version does work for me with it's strong magnification. I think they are also rare...
What does work for everybody is the bellows design without a mirror and with a peephole lens. The bellows allows one to move your viewing distance to GG.
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