... at least I do not remember.
In the late 70 at KMZ one
-) took off the prism of a 35mm SLR, but kept the groundglass and field-lens
-) as substitute a lens of 40° angular view, a additional mirror and an eyepiece were set on top.
The idea was to gain with a lens of long FL (300mm) a finder that yields an overview.
Something lacking at SLRs and often discussed in comparison with non-reflex cameras. Only here it is brought to an extreme.
Once an interesting detail was found and centered, the upper mirror was flipped to 45° and the groundglass image appeared to be focused on.
In the prototype taking-lens, overview-lens and body formed a unit:
It never made it into production.
In the late 70 at KMZ one
-) took off the prism of a 35mm SLR, but kept the groundglass and field-lens
-) as substitute a lens of 40° angular view, a additional mirror and an eyepiece were set on top.
The idea was to gain with a lens of long FL (300mm) a finder that yields an overview.
Something lacking at SLRs and often discussed in comparison with non-reflex cameras. Only here it is brought to an extreme.
Once an interesting detail was found and centered, the upper mirror was flipped to 45° and the groundglass image appeared to be focused on.
In the prototype taking-lens, overview-lens and body formed a unit:

It never made it into production.




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