Primer on Film and Digital Capture by Rob Hummel at Cine Gear Expo 2011.
http://www.youtube.com/watch?v=98FZ8C6HneE
http://www.youtube.com/watch?v=98FZ8C6HneE
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It all depends on how long the film is being exposed to the scanner's illuminating EM radiation. Fast films fog in a shorter exposure, slow films fog with longer exposures. So if you put slow film through a scanner set to a low power quickly, you will be able to detect less fogging than if you put the same film through the same scanner more slowly, or fast film through the same scanner at the same rate.Film can be fogged by as low power a device as an airport scanner... is it true? I thought that is is a problem if the film is over 800 ISO?
Um, take up painting? ];-)I don't like digital and i don't like film because both have pros and cons and both are not perfect.
Another thing to keep in mind when traveling is that high-altitude cosmic radiation also fogs film. So lead bags is a good idea even if you can get past security without xray.It all depends on how long the film is being exposed to the scanner's illuminating EM radiation. Fast films fog in a shorter exposure, slow films fog with longer exposures. So if you put slow film through a scanner set to a low power quickly, you will be able to detect less fogging than if you put the same film through the same scanner more slowly, or fast film through the same scanner at the same rate.
As long as the intensity of the scanner's illuminating EM radiation is above the minimum activation threshold required by a particular emulsion to activate the chemical reaction, all the films will be fogged to one degree or another.
They're not, but it takes a lot higher energy radiation to cause damage to a digital sensor than it does to fog film. Gamma rays or very high intensity Xray at least.To build on what Lars and Godfrey have said, exposing film to radiation -- be it x-ray, gamma ray, high altitude radiation in a plane, etc. -- is cumulative. Of course, we are assuming that our digital sensors are immune, which may not be the case.
I seem to remember NASA saying that a D2x is good for one mission and a couple space walks and the sensor is done.With a digital sensor, once it's damaged, the best you can do is map out the damage until it's unusable, then replace the sensor.
Hey, you are in the wrong place...I don't like digital and i don't like film because both have pros and cons and both are not perfect.