I need help to work out the aperture settings for a vintage lens, believed to be approx 1915. The lens is marked:

H Duplouich, Paris, Rectilicne Extra Rapid

That is all: no max aperture and no focal length (my guess for the latter is 100mm).

The aperture scale runs from 2 to 22 with equidistant segments. 2 is the smallest aperture, 22 is WIDE OPEN, so it is not related to an f-stop scale. I think it is the aperture diameter in mm.

An idea how to work out f-stops?

#vintagelens #vintagecamera

Stare long at the seagull, become mesmerised, go mad...

Olympus OM-D E-M10 | Carl Zeiss Jena Tessar 50mm f/2.8

#SilentSunday #MinimalistPhotography #BirdsOfMastodon #VintageLens #Tessar

The woodland is still carpeted with wild garlic but I found a small clearing with some daffodils lit by some lovely sunlight. The wood is quite calm after Storm David.

Today I used my micro four thirds camera with a vintage Pentax M series 50mm f1.7 lens.

#photography #microfourthirds #nature #naturephotography #angus #scotland #woodland #daffodils #wildgarlic #vintagelens #SilentSunday

Scatti Vari #2 (04 / Aprile / 2026)
Pentax K100D | Panagor 90mm

@foto
#photography #nature #vintagelens

Scatti Vari #1 (04 / Aprile / 2026)
Pentax K100D | Panagor 90mm

@foto
#photography #nature #vintagelens