I have here a prototype of the Steinheil Super-Apromat 5.6/300mm prototype lens in makers
box which is inscribed 180 lpm, so it seems to be quite a high resolution lens. Lens covers about
300mm image diameter at infinity. More info here on my site:
Steinheil Super Apromat LensI'm asking $1200 for that rare piece shipped and paypaled.
Contact me directly if interested:
postmaster@macrolenses.deThanks, Klaus