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OP he Calotype was a positive/negative process introduced in 1841 by Fox Talbot, and popular
for the next ten years or so. Strictly speaking the term refers only to the negative image,
but it is commonly taken to mean both.
A piece of paper was brushed with weak salt solution, dried, then brushed with a weak
silver nitrate solution, dried, making silver chloride in the paper. This made it sensitive to light,
and the paper was now ready for exposure. This might take half an hour, giving a print-out
image. It was fixed in strong salt solution - potassium iodide of hypo.
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cacholong
wwh 12/06/02 11:24 PM ![]()
Re: cafard
wwh 12/06/02 11:32 PM ![]()
Re: cafard/canard
Wordwind 12/08/02 10:23 AM ![]()
Re: cahier
wwh 12/07/02 01:42 AM ![]()
Re: cairngorm
wwh 12/07/02 01:48 AM ![]()
Re: calamander
wwh 12/07/02 01:51 AM ![]()
Re: calamander
Wordwind 12/07/02 02:41 AM ![]()
Re: calligram
wwh 12/07/02 02:08 AM ![]()
Re: calligram
Wordwind 12/08/02 10:29 AM ![]()
Re: calomel
wwh 12/07/02 02:13 AM ![]()
Re: calomel
Wordwind 12/08/02 10:31 AM ![]()
Re: calotype
wwh 12/07/02 02:20 AM ![]()
Re: camber
wwh 12/07/02 02:23 AM ![]()
Re: camber
Wordwind 12/08/02 10:33 AM ![]()
Re: camber
Buffalo Shrdlu 12/08/02 11:30 AM ![]()
Re: camber
wwh 12/08/02 02:52 PM ![]()
Re: cambist
wwh 12/07/02 02:26 AM ![]()
Re: cambist
Wordwind 12/08/02 10:35 AM ![]()
Re: camouflet
wwh 12/07/02 02:38 AM ![]()
Re: campanologist
wwh 12/07/02 02:42 AM ![]()
Re: cacholong
Wordwind 12/08/02 10:18 AM
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