For Sale Français Rectilinéaire 420mm (France, 1880s) _ antique ULF brass lens

antique brass lens from the renowned French maker Emile Français, established in Paris in 1830

big image circle, suitable for ultra large format

engravings:


focal length: 420mm
diaphragm: it seems to be about f/8
f/stops: slot for Waterhouse Stops
height (with lens hood): 96mm
frontal diameter (lens hood): 78mm
image circle: about 56cm
(enough for a 12x15" plate, see maker's recommendations below)
image circle has been taken at infinite with full aperture; at close distances and with small apertures, the image circle can increase
weight (with lens flange): 709g

symmetrical optical design (4 elements, 2 groups), it is a convertible lens: if the the frontal element is unscrewed, the lens gives double focal length and increased coverage

good condition, it keeps its original lacquer, nice “patina”
glasses: light cleaning marks
comes with lens flange

PRICE: 225 euros

Shipping cost:
Europe (depending of your country) ... 12 to 18 euros
USA, Canada, Australia, China, Japan, and all other countries ... 26.70 EUR

parcels shipped from European Union
(insured, registered, with track and trace)

payments:
Bank Transfer preferred (Wise)
PayPal also accepted