• Welcome to Photrio!
    Registration is fast and free. Join today to unlock search, see fewer ads, and access all forum features.
    Click here to sign up

Light Sensitivity of Platinum/Palladium

Photo Chemist

Member
Allowing Ads
Joined
Mar 27, 2018
Messages
106
Location
TN
Format
Multi Format
How light sensitive is the Platinum/Palladium emulsion? Can the paper be coated in daylight, away from direct sunlight/UV rays? I am planning on trying a platinum/palladium in a couple of weeks and was curious to know how the light sensitivity compares to other methods, such as cyanotype, gum dichromate, van dyke, and salter paper prints.
 

Fraunhofer

Member
Allowing Ads
Joined
Jan 1, 2016
Messages
207
Location
East coast
Format
Multi Format
Pd/Pt is more sensitive than cyanotype, so I would avoid day light. Incandescent lights would be best.
 

Alan9940

Member
Allowing Ads
Joined
Jun 17, 2006
Messages
2,496
Location
Arizona
Format
Multi Format
Many years ago, when I took a workshop with Dick Arentz and Mark Nelson we coated in a large school room illuminated by indirect daylight from many, many windows about 17 feet off the floor; no problems. Personally, though, I'd avoid any daylight or any light source suspected of emitting UV.
 
OP
OP

Photo Chemist

Member
Allowing Ads
Joined
Mar 27, 2018
Messages
106
Location
TN
Format
Multi Format

Pd/Pt is more sensitive than cyanotype, so I would avoid day light. Incandescent lights would be best.

Thank you! I knew that incandescent would be ok. I suppose I can always try it with a test strip. i appreciate the help.