08-15
Hello, I’ve just discovered cyanotypes and am fascinated by the simplicity and the many possibilities of the process.
At the moment, I’m still making my cyanotypes using a transparency negative (inkjet printer) and exposure to sunlight.
I’m quite happy with this, apart from the unreliable exposure times in the sun.
Unfortunately, I can only print up to A4 size, but I’d like to make larger prints.
My idea for this was as follows:
An old enlarger (E27 socket) + UV lamp.
The problem, however, is that the lens elements do not let UV rays through.
Are there any alternative solutions for direct exposure on coated paper from a 35mm negative? Is all UV light really blocked, or do I simply need to extend the exposure time?
I would be very grateful for any expert advice!
Best regards
MirkoBoeddecker
You could enlarge the image onto internegative film and then contact print it again using sunlight, or use a UV contact printer.
However, the images would then have to be slides, or you would need to process the internegative film using the black-and-white slide process.
Of course, you could also contact print a positive first and then enlarge it again.
Best regards,
Mirko
cfb_de
Hello 08-15,
You’re right: standard magnifying lenses and standard condensers don’t let UV light through (at least not enough to get by with an exposure time of less than a day).
You could now have a UV-transmitting quartz condenser made and buy a UV lens. But you’d better sit down first, get the Korodin drops ready and give the doctor a call. *Then* take a look at the price :-)
Best regards,
Franz
Wolfgg
Hi 08/15,
Have a look in the forum for "arc lamp" and you'll find the post
"ADOX print film is light-hungry"
That thread has also covered UV enlargers, amongst other things.
Regards, Wolfgang
