New Stereoscopic Lens
A pair of New Stereo Settings, introduced in May 1860 and available for many years. Like many other early Dallmeyer lenses, they are only inscribed with the name J.H.Dallmeyer, the serial number and London.
The New Stereo Settings were available in Sliding Mounts, as shown here, or with Rack and Pinion movements. These lenses were available singly and would have been useful for photographers making 1/6 or 1/9 ambrotypes, ferrotypes and CDV portraits. They appear to be f4 petzvals.
The data below is from the the 1881 Dallmeyer catalogue
And also from the the 1881 Dallmeyer catalogue
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