Don't forget at this period, most part of early opticians in Paris were located Quai de l'Horloge (Chevalier, Wallet, Derogy, Lerebours etc.. ) and often at the same adresses: 31, 33, 65, 67, 69, 71,...
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Don't forget at this period, most part of early opticians in Paris were located Quai de l'Horloge (Chevalier, Wallet, Derogy, Lerebours etc.. ) and often at the same adresses: 31, 33, 65, 67, 69, 71,...
An early "Verre Combinés" sn10522, only engraved "Brevet d'Invention DY à Paris". Definitely a Derogy
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https://www.cameramanuals.org/prof_pdf/sinar-copal_shutter.pdf
maximumx factory made was 102mm (Sinar DB)
Victor Ninet was a french studio photographer and editor, starting his activity in 1847 at 14 Rue Rambuteau, Paris. He was a also a maker and the factory was in the same block.
Later, this building...
A.F.R. are mystery lenses.
I can remember when I found my first one maybe 15 years ago here in Paris, the owner told me A.F.R. was successor (or associates) of Roussel.
But I've never seen or read...
Every OIP Labor lens have the "Flou-Net 1-5" ring, this one also (you can see on the other pictures in description). Made in 3 different focal lengths: 250mm, 300mm and 440mm with aperture f4.5, but...
181658 181659
You're welcome.
According this data sheet, "foyer principal en centimetres" is measured from iris (or waterhouse slot).
And 46cm is nearby 18in
Yes Derogy Euryscope are also known as Aplanetique Extra Rapide.
Same optical design than Aplananetique but faster
174526
19343 Serie II 13in 8x10 f4.5 with rear thread spacing
26448 Serie VI 13.1in 8x10 f5.6
Super boulot, merci Dan
My old Berthiot Perigraphe f14 150mm SerVIa, 112°, made for 24x30cm
A killer for landscape in 8x10
... et Gilmer ;)
Maybe for the Cooke Portrait Lens.. I Have a Cooke Anastigmat serie IIa 3.5 8" without diffusion
162870
It could be an upgrade of a "Systeme Gaudin" achromatic lens, or a early version of the "Objectif pour vues".. But the missing pinion makes me think toward Gaudin
Yes Steven, I know Voigt data say 30cm Universal Heliar is for 16x21cm. I used Universal Heliar 36cm until I check by myself coverage for 8x10 at portrait distance with 30cm. And I assume there is no...
the most used: Commercial Ektar 6.3 12"
the most loved: Universal Heliar 4.5 300mm
"Adjustable Landscape n°2, Pulligny, Optique Francaise Ligny", 990 euros, ( 122271436835 )
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Today at Deutsch Auctionneers sale, a Dallmeyer 6D in poor condition: 2794 euros
LOT 0890 DETAILS
Globe Wide-Angle Lens by Hermagis, Paris, No. 18267, c. 1875
A lens similar to the "Globe" by Harrison consisting of two convex achromatic lenses. Different from "Globe Avec...
yes, and sold 150 euros three weeks ago in France
191872958196
Thank you for sharing, very interesting data
I guess french lens, "Wallet & Hermagis"
(I don't tell about flange but front thread...)
my Eidoscope #2 is 375mm f4.5 and covers 8x10 at portrait distance
Hi,
I've discovered yesterday my front ring and original cap were lost. I've used this lens 4 weeks ago in a rental studio and I guess it's the place where I ve lost it. Arghh
So this morning I'm...
B&J 8x10 + Universal Heliar 4.5 300 + Polaroid 804
147116
147060
Speed Graphic 4x5 + Aero Ektar + Polaroid 59 exp2007
Some news, I've found the magical stuff Jim had suggested in a local tyre repairshop ( a charming man, gave me some product in a small bottle to try), but after three test, it doesn't work. So this...
Thank you Jim, gonna try to find this stuff.
For now, I've tried with "essence F" (in french, I guess it's similar fluid lighter) and few drops of acetone, bot nothing appears
Thank you for the clarification Steven.
I've mailed SK Grimes and I guess Adam will be the right person for repairing this iris.
Hi, few days later, I've tried and followed your suggestion, put some drops of solveant, and then lubricant146237 around the ring..
Result: nothing.
Arff
I don't feel enough inclined to unthread...
Oh, thank you for these replies.
I'll check tomorrow, as I 've already unscrewed front and rear cells... Iris leaves seem to be in nice condition
Hi from Paris,
I'm Jay, following this forum since few years ago, and this is my first post:
I'm the owner of a Cooke Series II SF 8x10 and the iris is stuck! No way to turn the ring... It's stuck...