6mm f/2.8 is spectacular (I remember for having seen it at Photokina 1972 ?), and it is also a technical masterpiece. I have no exact recollection why this lens have been build for (calculate cloud coverage ?),....
Truly a lens you newer forget seeing, even more so shooting!
Yes cloud coverage was one application they mention in early Nikon literature I recall.
Yes, quite a pointless video I agree. The lens requires so much of the photographer.
Here Carlsberg Glyptotek - Currently celebrating 125 Years anniversary... !
_EGL1989 by
Erik Gunst Lund, on Flickr