Petzval DEROGY Extra Rapide Portrait n°6 brass French lens large format 8x10
An antique french lens engraved. Derogy Fabricants Breveté Paris & Londres N°6. This huge petzval lens from Derogy is " Objectif double à portraits Extra Rapide n°6", ultra fast large format lens for studio working in dull light. In nice used condition, brass barrel wears a beautiful patina with some marks due to age. The rack & pinion focusing system works as it should. The glasses are bright without chip, without scratch, and are complete (cemented achromat on front, and separated achromat with spacer ring on rear). I see some handwritten words and data on the edge of glasses but I can't read it properly. There is a waterhouse slot, but no waterstop is included. There is a small dent on rear element metal ring (doesn't affect anything). The lens has not been restored or polished.
This lens covers easily 8X10in. Focale length (on rear element): 300mm.
Focale length (from waterhouse slot): 360mm. Diameter at mounting thread: 108mm.
The opportunity to own a historic tool of french photography, in nice working condition, for large format photographers and wet plate enthusiasts. Check my other antique lenses for sale.
L'item "Petzval DEROGY Extra Rapide Portrait n°6 brass French lens large format 8x10" est en vente depuis le mardi 4 septembre 2018. Il est dans la catégorie "Photo, caméscopes\Photographie ancienne\Objectifs anciens". Le vendeur est "75photographica" et est localisé à/en Paris, Ile-de-France. Cet article peut être expédié aux pays suivants: Amérique, Europe, Asie, Australie.