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An interesting toning pattern that just turned up on eBay
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<p>[QUOTE="desertgem, post: 2405738, member: 15199"]The part that doesn't seem "natural" is at the 10-12 o'clock portion of the rim. The lack of toning is most striking on the rim, which I assume would be direct contact argument, carbon of the print preventing the acid of the paper from toning the metal, but where the field adjoins the rim and the paper could not retain direct contact, the 'toning' contrast becomes as expected less ..But it maintains a linear representation of the letter (reverse lower 'e'), as if the print might be blocking a "ray" of toning chemical rather than a vague diffuse area which would be expected if a random chemical movement was occurring. Superman's X-ray vision, where he could read paper print within a metal safe comes to mind. Both it and this effect are not possible in a real world.[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 2405738, member: 15199"]The part that doesn't seem "natural" is at the 10-12 o'clock portion of the rim. The lack of toning is most striking on the rim, which I assume would be direct contact argument, carbon of the print preventing the acid of the paper from toning the metal, but where the field adjoins the rim and the paper could not retain direct contact, the 'toning' contrast becomes as expected less ..But it maintains a linear representation of the letter (reverse lower 'e'), as if the print might be blocking a "ray" of toning chemical rather than a vague diffuse area which would be expected if a random chemical movement was occurring. Superman's X-ray vision, where he could read paper print within a metal safe comes to mind. Both it and this effect are not possible in a real world.[/QUOTE]
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An interesting toning pattern that just turned up on eBay
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