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Hi, once every 13 years it's important to discuss the design of Hermagis Hellor. Does this really count as Tessar?
239574

Br
Vesa

Thanks for all the pieces of advice I received. Here is how I solved the issue: after fixing and first rinse with water I took some cotton wool dipped in fixer and wiped gently the stripes. Then...

I have Zeiss Fliegertruppe triplet 50cm and would also be interested to learn more about Berthiot special aviation 520mm. Can't find anything online.

The contact is only on the "anti-halation side". No contact on emulsion side. Would it still affect the development?

Hi, I have developed 5x7 foma on Paterson tank with QL57 developing reel in Rodinal and fixed with Adofix. After processing I have noticed stipes of anti-halation dye on the back side of the film...

Hi, I have a nice Ysarex 210mm F/4.5 in Compound shutter in good shape. The only problem is that aperture ring is stiff. It works but it is nail hurting to adjust the aperture. Anybody having the...

It is actually a 1907 catalog (not 1910 as I wrote), here is a link: http://www.kamerasamlingen.dk/Filer/Kataloger/AD%20Goecker%201907%20LQ.pdf

I have two examples of most likely the middle 210mm version: one is with waterhouse stop (stops lost) and second is with iris diaphragm.

Text translated from from 1910 Danish GOECKER catalog:...