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Message: <blockquote data-quote="Binastro" data-source="post: 3544564" data-attributes="member: 111403">I have ordered some Nikon TC-E2, so will see if it works for me.I may need to use my Minolta viewfinder correction dioptres, although my left eye might be O.K. without, at least at night.I don't know if I can make the two converters truly parallel.Afocal adaptors seem difficult to make well.Zeiss resorted to radioactive glass for a 1.7x Mutar??, the only use by Zeiss of such glass that I found.I had a Panagor?? fish eye adaptor that worked very well with stopped down lenses on my Minolta.This is the only lens that ever cracked in minus 25C to minus 30C weather. The Minolta lenses were fine.I think that the metal front cell contracted and broke the very curved front element.16mm f/2.8 Minolta full frame fisheye lenses and probably others seem to have more or less front afocal lenses.The rangefinder cameras with leaf shutters had 35mm, 45 or 50mm and 85mm lenses using interchangeable front halves. Never as good as a good fixed lens.The 1950s Minolta 50mm f/1.8 or 45mm f/1.8 rangefinder lens was staggeringly good. Possibly a Minolta A?? camera.</blockquote>