at my point of view, I see that although the scheme applied on FED was feasable for a competent mechanicist, is use was very limited.
Very small viewing/focusing área, difficult use, no prevention of mirror removal during Picture taking, reminds us to a delicate work which is not the case when using large focal lenses.
going to static work we can call for microscope or telescope using, may be also for reproduction work when it will call for a high accurancy of focus.
Observe that the miniature of prism/mirror and ou-of center contruction cunducts us to aeven more limited use, mainly due the image reversing at viewfinder.
The most probably use where quietness in work is essencial for reproduction operations in great enlargements, being so, my votes towards this aim, perhaps police use for fingerprint identifications
Regards
LP
03/17/2015 07:30


