Recent content by Mark Osterman

It is a Gevaert fine grain developer formula I found in an early Leica booklet.

We are actually going to present the roll to the Leica Museum in June when we are there to demonstrate our film. I will document the frames while I still have possession of the roll though all I have is my iPhone at the moment. Will also make some prints using our 1926 Leitz enlarger.

Well, that was a major target for me. I will step up the speed and make it orthochromatic after our June deadline. I also want to slit to other sizes to allow us to try in other rare cameras like our 1889 string set Kodak. We already made the double gelatin layer stripping film (called American...

I am so sorry. I don’t come on this forum very often and am usually confused as to where my content should go. I put it in two places that seemed to be for people who might enjoy the content. In the future where do you think I should post it? Pretty sure I’m the only one making 35 mm film...

I used to demonstrate making nitrate film base when I worked at George Eastman Museum. It is very expensive and difficult to do by hand for long sheets. For this project the emulsion is more important than the base so I am using subbed acetate provided to me by both the Eastman Kodak and Ilford...

For a year now I’ve been working on a special project; making the same type 35 mm cine film that was used by Oscar Barnack for his prototype Leica camera. It was originally sourced through Eastman Kodak based on the early B&H sprocket holes. I was lucky that Eastman Kodak gifted us an original...

Here are a couple of frames from film I shot in Doha, Qatar in January (2026). They were shot in a 1928 Leica I camera with film I made like the fine grain film available in the mid to late 1920s. This is roughly ISO 8-12. Hard to pinpoint since it is only blue violet sensitive. Not isochromatic...

Many of you may know that in the past year I have been working on making the 35 mm cine film that was available to Oscar Barnack when he invented the Leica camera. Last year was the centennial of the announcement of the Leica and while I didn’t quite make that, my wife and I will be going to...

So, I have actually been making the 1925 era film since this time last year but I'm only now navigating the Photrio forum once again. Anyone interested?

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Forgot to mention that these cine film tests were developed with a rare 1926 Leitz revolving drum apparatus. Those films were part of a demonstration of emulsion making and film coating for Davey Bendiksen, a teacher of cine film shooting up in Massachusetts. He took the three strips of film...

Last week we ran some tests of my MO-1925 emulsion 35 mm film through a vintage Eyemo cine camera. These were shot at 8 fps by hand cranking. Developed in 1929 Borax MQ developer formula (Eastman D-76)

I recently ran some of my MO-1925 emulsion 35 mm film through a vintage Ansco Memo camera. Developed with 1929 formula Borax MQ developer (Kodak D-76)

Hello Mghis, First of all, what is your actual name? I cam show other images of the coater but if you are seriously interested it’s better if you contact me by email or text as I can only post so many pictures here. LOL .. I am generally confused how to start new threads on this site where...

Yes, when there is a spec of dust it’s more noticeable on a 35 mm negative than a 4x5” plate. But dust is always a problem with enlarging and that’s why God invented retouching. Here is one I shot in the 1928 Leica earlier this week. Fun that I can also drive to locations in my model T that’s...