So looking for a scanner for x-ray films. Found a candidate that advertises a Dmax of 3.8
Can anyone tell me if this Dmax optical density is the same Dmax optical density that is used to describe x-ray films?
Understood in scanner language, Dmax is an indication of the fidelility with which a scanner will "see" all subtle tone differences, shadows, highlights, etc. The larger the Dmax, the better the fidelity of the final image.
But for x-ray films, I think it's almost the same, but not sure. So for a developed film, the optical density range is Dmax - Dmin where an optical density of 0 is 100% transmittance (Dmin) and an optical denisty of approx 3 is 100% opaque (Dmax). So Dmax appears to not be an indication of fidelity (or sensitivity), but more an absolute measurement of opaqueness of the film?
So if I have a scanner with a Dmax of 3.8, and I have an x-ray film with a Dmin of 0 and a Dmax of 3, my scanner should pick up all details, subtelties, tonal differences, etc from my film?
What if my scanner Dmax was just 2? I think I would then be loosing a significant amount of information from the film...right?
Any comments appreciated!
Thanks,
Nancy
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