Peter Schrager
Subscriber
Nice video from Joe Van Cleeve
Hope the link works
Hope the link works
I think the graded photopaper is mostly sensitive to blue and UV. I'd guess exposing it will be similar to AG+. And it's true that exposure meters are sometimes less than helpful, although if you compensate for the angle of the sun and cloud cover, they will get you "in the ballpark"....
Do you find the Arista paper is panchromatic, meaning I have a chance at metering it correctly? I am used to working with AG+ emulsion and collodion wet plate, where the UV response makes an exposure meter all but useless....
I think the graded photopaper is mostly sensitive to blue and UV. I'd guess exposing it will be similar to AG+. And it's true that exposure meters are sometimes less than helpful, although if you compensate for the angle of the sun and cloud cover, they will get you "in the ballpark".
hi don
i think in the video he says his solution is 9%
i spoke with some chemical suppliers and they said
the shelf life is short for higher than 10% ...
John, I can understand your concern about working with 35% H2O2. I only handle it in that concentration when mixing a working solution, and take the precautions of face shield, chemical resistant gown and gloves. And also think about your feet, if you knock a bottle over on the table. So also keeping the container in a larger, shallow chemical tray is good insurance. Once I have a working solution, I still wear the face shield and gloves in the darkroom, as it's easy to don and doff the shield
Don, good results. I've heard that the silver from the first development combines to form silver citrate, which is light colored and not light sensitive. The peroxide helps form citric ions to help attract the silver.
For less mottled highlights I reduced bleaching time to minimum time to fade the image; I suspect excess bleaching causes the peroxide to attack either the already bleached silver citrate, or the underlying emulsion or resin - not certain.
Others here are also experimenting with this process, hopefully they'll share their results soon.
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links. To read our full affiliate disclosure statement please click Here. |
PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY: ![]() |