Cosmic rays are not the only type of ionizing radiation that fog film and aren't slowed by low storage temperature. Steve lives in Los Angeles, which is generally built upon soil that doesn't have much rock. Those who reside where the subsurface geology includes a lot of granite, or whose homes suffer from radon gas (a bigger problem than the one it presents to their film) will likely have a different experience.
Cosmic rays are not the only type of ionizing radiation that fog film and aren't slowed by low storage temperature. Steve lives in Los Angeles, which is generally built upon soil that doesn't have much rock. Those who reside where the subsurface geology includes a lot of granite, or whose homes suffer from radon gas (a bigger problem than the one it presents to their film), will likely have a different experience.
I consider anything I bought and froze with dates from 1980 and forward more-or-less new ...
granite, or whose homes suffer from radon gas
Stop buying Ilford and buy Fomabrom Variant 111 VC FB. Cheaper and better in every way than the Ilford paper. I like Ilford's products for the most part, but their papers are not great.
In granite, trace amount of uranium can be a concern. How significant of a concern would be a nice paper napkin exercise. Other than that, granite will radiate (if it does, at all) in the form of β- at 1.3MeV as a result of potassium-40 decay. The metal canister of a 35mm roll will effectively block it. The remainder will be mostly (again, if at all) radon. Radon emits α radiation, which is effectively blocked by e.g. a sheet of paper. Seems to be they're quite insignificant threats compared to cosmic radiation.
I think there's was back in the 1960s an educational case study that involved 'mysterious' fogging of film at Kodak. Students were supposed to show their analytical skill by tracing the origin of the problem, which turned out to be long-term storage of stock inside a granite cave. I don't know to what extent it was a realistic case. It was apparently sold as such to the students. Well, even if there was a little stretch of the imagination involved - never let reality get in the way of a good story.
Kodak in Rochester New York figured out that nuclear bombs in America's southwest cause radiation to drift over the US to fog their film. It was hushed up.
When Kodak Accidentally Discovered A-Bomb Testing
Two thousand miles away from the U.S. A-bomb tests in 1945, something weird was happening to Kodak's film.www.popularmechanics.com
Sorry.Humppp . . . I am not good enough to quote?!?
That's my experience as well, but let's not forget about the "middle-of-the-road" situation. "Cold stored" (and that, just like "frozen", can vary) makes a difference too.
I've never frozen my paper, but I keep it cold.
Kodak in Rochester New York figured out that nuclear bombs in America's southwest cause radiation to drift over the US to fog their film. It was hushed up.
When Kodak Accidentally Discovered A-Bomb Testing
Two thousand miles away from the U.S. A-bomb tests in 1945, something weird was happening to Kodak's film.www.popularmechanics.com
"The legacy from above-ground testing involves not only Pu but also other radionuclides such as cesium-137 (137Cs), strontium-90 (90Sr), tritium (3H), and carbon-14 (14C)."The way I heard it was that it got into the food supply of cows whose body parts were being used to make the gelatin for films.
Maybe I just herd it ...
The way I heard it was that it got into the food supply of cows whose body parts were being used to make the gelatin for films.
Maybe I just herd it ...
The way I heard it was that it got into the food supply of cows whose body parts were being used to make the gelatin for films.
Maybe I just herd it ...
Yes, absolutely. Virtually all of them are made from digital files, so there's no advantage to film in that area.
My Digi of choice is a Nikon D300s
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