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rkmiec
09-05-2007, 08:22 PM
a few questions.if coating a plate with black magic or liquid light is the plate going to be a negative or a positive.i am thinking of experimenting with a pinhole camera and glass plates.but it seems that those products are for printing not taking photos.if that is true are there any emulsions that are for a negative.i am new to the idea of glass plates.i have read some threads but this specific question isnt answered.ultimate goal would be contact printing with the plates.also how about speed.in pinhole every stop is like an eternity.

Jersey Vic
09-05-2007, 09:02 PM
This guy made a 'glass' negative using liquid light but he used a lens.
It's SLOW.

http://www.apug.org/gallery/showphoto.php?photo=6709&cat=500&ppuser=5239

He has some other images using this method posted as well. Nice stuff.

Good luck.

Victor

jnanian
09-05-2007, 09:18 PM
hi there

i made glass plates to exopose under an enlarger coated with liquid light.
i have also made dry plates ( camera plates ) with the same stuff.
it is very slow stuff, around asa 1 or 5, and with a pinhole, it will be very slow :)
you will get a negative in a camera, just like photo paper, or film.
make a good subb layer. i have had good luck with clear gelatin,
food grade worked for me.
you can also use urethane, but it will yellow over time.
just make sure your plate is really clean and you should be OK.

not sure if you have been over to here: http://www.alternativephotography.com/process_dryplate.html
mark explains it better than i ever could :)

have fun!

john

athanasius80
09-05-2007, 10:40 PM
Read the alternativephotography.com article. It explains everything well. Again it is a very slow medium ASA 0.5-2.0 but its a lot of fun to work with.

athanasius80
09-05-2007, 10:40 PM
Oh yeah, pour your plates over a tray or lots of newspaper.

And good luck!

rkmiec
09-05-2007, 11:07 PM
thanks for the info.is there a faster emulsion out there,i think making my own is a little beyond my ability.maybe home brews are slow also?i will go to the website you guys rec.