How can the slabs be water-tight, but not air-tight? And what does it mean to be "sealed"?
Slabs are not airtight. Does not look like oxidation, but maybe residue of some kind like glue. Looks conserve-able to me.
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Amount from 10 vs 2 depends on the coin. Usually you want more light hitting the face, so if the bust is facing left, 10 should be a bit brighter....
My experience with various stereoscopes is that "modified" ringlighting is the best approach. You'll need a ringlight adapter for the scope, or...
I have one almost exactly like it. The 4 outer pins are for alignment to the bracket that fits the post. You should be able to remove the upper...
Couple things to check: - the post should be vertical. Many stands for sale have angled posts, and these make focusing more difficult if you use...
OK, you guys got me interested in trying out a full-coin animation. Here is the reverse of one of my 41-D Lincoln Toners: It's a big file, ~20MB,...
Canon gives you free tethering software, and a vibration-free shutter when in Live View mode. You have to pay for the software for Nikon, and only...
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