When did enlarging begin?
A picture of a picture seems pretty obvious from here and now
and inter-negatives
as a collector of enlargers I wonder
Soon it was used on Copy Cameras for science
The very high resolution of wet plate allowed magnification and extreme reductions of data
and now I read in my new book that by 1853 wet plate was being used for micro printing documents on tiny bits, by 1870 attached as Pigeon Post into Paris during war
Scientists also used very thin emulsions for better resolution
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