General Discussion :
Wet Plate Collodion Photography Forum
Wet Plate Collodion Photography Forum
Mythbuster. [Hypo vs Amm Thio]
Posted by:
unrealalex
()
Date: October 18, 2010 04:21AM
So to find a truth I made a simple test. I had hypo and Amm. Thio and I want to understand are there any difference in picture using those fixers.
So I made an exposure then develop and then cut a glass in two parts.
One part I fixed in Hypo and another in Amm. Thio... try to find 10 difference in them
))
*For sure I scan two pieces by one pass by putting them together on scanner glass.
Mythbuster wet-plate collodion negative 8x10"
Fixing time (until all whites is gone):
Hypo: 2 minutes
Amm thio: 30-40 seconds
Collodion: "Same Day Extra Dry"
Potassium Iodide + Potassium Bromide
So I made an exposure then develop and then cut a glass in two parts.
One part I fixed in Hypo and another in Amm. Thio... try to find 10 difference in them
))
*For sure I scan two pieces by one pass by putting them together on scanner glass.
Mythbuster wet-plate collodion negative 8x10"
Fixing time (until all whites is gone):
Hypo: 2 minutes
Amm thio: 30-40 seconds
Collodion: "Same Day Extra Dry"
Potassium Iodide + Potassium Bromide
Re: Mythbuster. [Hypo vs Amm Thio]
Posted by:
Ray Morgenweck
()
Date: October 18, 2010 07:40AM
Thats very interesting.
A good thing to try next is to place both plate sections in the sunlight for several days...and see if one half changes color, or darkens. That would indicate remaining active silver salts.
A good thing to try next is to place both plate sections in the sunlight for several days...and see if one half changes color, or darkens. That would indicate remaining active silver salts.
Re: Mythbuster. [Hypo vs Amm Thio]
Posted by:
J0B00
()
Date: October 18, 2010 09:20PM
Looks like they're the same color to me...
Next time cut it in 3 pieces and fix it with KCN, Amm. Thio., and Hypo....
Next time cut it in 3 pieces and fix it with KCN, Amm. Thio., and Hypo....
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