Originally Posted by
Steven Tribe
The listed large aplanatic (15.5") with sn 160, reached £840. This must be a record for a aplanatic and rivals prices for early French pill box lenses and Taylor RV(P)s.
It is easy understand that Grubb decided to use his entrepreneur skills in other areas than ordinary photographic optics. There was plenty of price competition and most companies were happy to just survive until the mass market of the 1890's and beyond!
Have there been any "modern" analyses of the optical properties of the Aplanatic design compared with the Rapid Rectilinear and the Ross rapid symmetrical?
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