I used Lumiere's developer.
Here is a new Lippmann photograph this time using a homemade albumen plate:
Originally Posted by manalokos
Can you elaborate on how you made your plate? That looks really cool!
I was reading an old article on Lippmann photography (here: http://books.google.com/books?id=54M...lbumen&f=false). It details how Lippmann made his silver halide emulsions, but it makes no mention of any sensitizing dyes. It also says that the plates were NOT orthochromatic, so I guess that would imply they were blue sensitive. It also stated that the exposures were extra long to account for the reds -- But how would that work then?
In other news I was looking at dyes to panchromatize emulsion for Lippmann plates -- I know this has been kind of beaten to death on apug... Does anyone see any problems using erythrosine and methyl violet for green and red sensitization, respectively?
Several people have said that they were going to try it. I have seen no data yet.
OTOH, the Erythrosine works fine and I have posted data on that here.
Making his own plate.. another challenge.
I'm impressed with the result Felipe obtained !
My first "ok" plate with a slavich plate :
Sponsored Ad. (Subscribers to APUG have the option to remove this ad.)
Great to see some results!
Albumen plates promiss to have much better color rendition than slavich plates, I am still trying to determine the exact procedure.
Whe I have consistent results I will post more information.
Hello back !
Lot of trials and errors, lot of reading, helful advices and I realized satisfying plates..
But first, back on the last plate I posted motnhes ago.
I find it awful today : no color at all, really sad.
I made it with slavich plates (PFG-03C) testing the "air interface" technique.
If you want "so-so" lippmann plates, that's the way !
Even at Lippmann's era, it has been tested and found not as vivid as those obtained with mercury.
Today, nothing has changed !
The process was as following.
I tested many dilutions and processed by inspection to stop the developpement when it was OK.
I ended using GP-2 for 8min but diluted 4 times (1 stock + 3 water) only.
Washing with gradully concentrated propanol solutions..
But colors were really disappointing !
So I devised a little frame to put mercury behind the same slavich 63x63 plates.
It wasn't easy but rewarding. Just have a look to my last one.. It is shining !!!
The process isn't OK because lot of parameters should still be fixed.
I would need some info on slavich plates composition.
Has anyone ever been in touch with them ?
They answer only when asking to buy something
What is the plastic thing over the plate?
I was able to achieve fairly decent colors with the slavich plates, although the reds always come a bit orange.