Sun printing is fun printing


#1

Originally published at: http://boingboing.net/2017/06/27/sun-printing-is-fun.html


#2

The boy child and I made this one a while back.


#3

Lovely! I’ve been printing stuff on transparency paper and then xfering it to the sun paper. Kinda fun.


#4

That’s a good idea. We limited ourselves to plants and trinkets but it would be fun to do both.


#5

Hmm…I wonder how well it would handle halftones.


#6

I dunno, I’ve only tried with printed letters and a few silhouette style prints.


#7

Bonus: if you’re exposed to radioactive cesium, or other heavy metal toxins, you can eat the print as an antidote.


#8

Good to know.

Good to know.


#9

That’s lovely! Frame it, you should. :slight_smile:


#10

For inspiration, Man Ray did a lot of work with the photogram.


#11

Given the packaging, look like a pinhole camera setup would work with it.


#12

I’ve wondered about this for years, but been unable to find any info on exposure. I expect using a pinhole setup (at what? f/120 or so?) would require a looooooooooooong exposure. Like, maybe days. And is there any reciprocity failure?


#13

According to wikipedia, 10-20 minutes seem to be sufficient :


#14

But that’s for doing an exposure outside of a camera, doing e.g. a contact print. A pinhole camera would be different – the flood of UV light that you would use under normal sunprint exposure conditions would be slowed to a trickle. f/120 is a tiny amount of light for an average-sized camera.


#15

You beat me to it! In my first college photography class we started out with photograms, before even doing anything with cameras.

Like @jlw, I remember using the blue sun-sensitive paper as a kid. It was at summer camp—I remember using ferns, that I placed to look like pine trees in a landscape, and cutting block letters from paper to spell the name of the camp. Wish i still had that print.

Seems like jlw-and-kid’s prints could be really nice made into greeting cards—you could cut out letters for “Happy Birthday” or somesuch, or maybe use string to write it in cursive?


#16

Very well. But of course with a lens you can take cyanotypes of images too.


#17

Does that do grayscale?


#18

Yep! You can even do proper photography with the process.


#19

I mean does the ink jet transparency handle gray scale, or is it just a way of making high contrast graphics, the way it’s always demonstrated in every video I’ve watched so far?

Inconclusive.


#20

oh, sorry, I misunderstood the question.

Cyanotypes can definitely handle greyscale, transparencies I have no idea about.