That is an old cyanotypeing process, look up CYANOTYPE 2 process, it was invented by a photographer with a doctorates degree, you can get the raw chemicals and mix yourself, or by the kit from digitaltruth or Freestylephoto, it has 4-5 contrast ranges where original cyanotype only has 1-3 at best.
I've been planning to do this exact process with an old Brownie Hawkeye. It'll take at least eight hours since the camera has such a small aperture. I'm also converting an old Polaroid one step for the same thing. An empty Polaroid film pack makes a great way to load the sunprint paper. Good job!
Can you talk more about the glow in the dark camera that you made? Does the image go directly onto the coated glass plate? What specifically is the coating? This video is a great idea for the cyanotype. Thanks. :-)
Ha. You beat me to it. I'd also had both of those ideas: Glow-in-the-dark and cyanotype paper used in place of film. Good work.
I wonder if some plastic lenses would be better for speed. They may not block as much UV light as glass ones. It would be nice to get exposure times down to 20 minutes or so, which is what the cyanotype printing process is like, right? Was your magnifying glass plastic? How was that exposure time?
I'll probably play around with this at some point.
The homemade camera image is blurry for two reasons. The lens is a simple lens and cyanotype is ultraviolet sensitive. Out eyes are yellow green sensitive and as such you need to apply an adjustment to the focus to have the lens focus the blue / ultraviolet on the film plane.
That is an old cyanotypeing process, look up CYANOTYPE 2 process, it was invented by a photographer with a doctorates degree, you can get the raw chemicals and mix yourself, or by the kit from digitaltruth or Freestylephoto, it has 4-5 contrast ranges where original cyanotype only has 1-3 at best.
LordMagnus007 2 months ago
I've been planning to do this exact process with an old Brownie Hawkeye. It'll take at least eight hours since the camera has such a small aperture. I'm also converting an old Polaroid one step for the same thing. An empty Polaroid film pack makes a great way to load the sunprint paper. Good job!
MotorMill 2 months ago
Can you talk more about the glow in the dark camera that you made? Does the image go directly onto the coated glass plate? What specifically is the coating? This video is a great idea for the cyanotype. Thanks. :-)
livingroomcinema 3 months ago
Ha. You beat me to it. I'd also had both of those ideas: Glow-in-the-dark and cyanotype paper used in place of film. Good work.
I wonder if some plastic lenses would be better for speed. They may not block as much UV light as glass ones. It would be nice to get exposure times down to 20 minutes or so, which is what the cyanotype printing process is like, right? Was your magnifying glass plastic? How was that exposure time?
I'll probably play around with this at some point.
japhyriddle 3 months ago
That is a very interesting observation. I never considered that. Thank you for the comment!
CorvatChauveSouris 8 months ago
The homemade camera image is blurry for two reasons. The lens is a simple lens and cyanotype is ultraviolet sensitive. Out eyes are yellow green sensitive and as such you need to apply an adjustment to the focus to have the lens focus the blue / ultraviolet on the film plane.
PZAudioDrama 9 months ago