Solargraphy
April 13, 2010 11:51 AM Subscribe
Solargraphy.com's purpose is to find out how different the paths of the Sun are around the world. The project has invited anyone to take part and fill in gaps on the map of solargraphs.
can anyone here explain as to how color images are obtained by exposing b&w paper?
posted by vostok at 12:22 PM on April 13, 2010
posted by vostok at 12:22 PM on April 13, 2010
can anyone here explain as to how color images are obtained by exposing b&w paper?
Magic!...no, not really...i think the instructions reccommend B&W film just because its easier to work with...but outside of the odd stain or all-over color dye (like sepia tone), you don't get color on B&W film...these were all shot with color film...god, this one is sooo good...
also for some reason these pix remind me of this video of the earth with rings like saturn (views from the surface of earth start about 1min in...)
posted by sexyrobot at 12:35 PM on April 13, 2010
Magic!...no, not really...i think the instructions reccommend B&W film just because its easier to work with...but outside of the odd stain or all-over color dye (like sepia tone), you don't get color on B&W film...these were all shot with color film...god, this one is sooo good...
also for some reason these pix remind me of this video of the earth with rings like saturn (views from the surface of earth start about 1min in...)
posted by sexyrobot at 12:35 PM on April 13, 2010
The pictures are really quite cool, they remind me of those photoshopped images of the sky if the Earth had rings, though much more evocative.
I hope the purpose is really more about collecting these awesome images than actually finding out about the path of the Sun, because I'm pretty sure it would make more sense to just simulate that.
posted by lucidium at 12:40 PM on April 13, 2010
I hope the purpose is really more about collecting these awesome images than actually finding out about the path of the Sun, because I'm pretty sure it would make more sense to just simulate that.
posted by lucidium at 12:40 PM on April 13, 2010
Pinhole camera captures image of the Sun’s path over a year.
posted by marvin at 4:07 PM on April 13, 2010 [1 favorite]
posted by marvin at 4:07 PM on April 13, 2010 [1 favorite]
you don't get color on B&W film...these were all shot with color film
no. really. they're shot using black and white photo paper (not film). she's quite clear on the point.
posted by wreckingball at 7:59 PM on April 13, 2010
no. really. they're shot using black and white photo paper (not film). she's quite clear on the point.
posted by wreckingball at 7:59 PM on April 13, 2010
they're shot using black and white photo paper (not film).
abso-mo-fucking-lutely NOT. B&W film will not take color pictures. if you look in the gallery, there are a few black and white images...Those were shot with black and white film (or paper, either one works), but most of them were shot in color...she also misspelled 'scanner', and neglected to mention you will also need to develop the film (or paper)...also, she didn't take most of these pictures...they're submissions from readers...
posted by sexyrobot at 1:16 PM on April 14, 2010
abso-mo-fucking-lutely NOT. B&W film will not take color pictures. if you look in the gallery, there are a few black and white images...Those were shot with black and white film (or paper, either one works), but most of them were shot in color...she also misspelled 'scanner', and neglected to mention you will also need to develop the film (or paper)...also, she didn't take most of these pictures...they're submissions from readers...
posted by sexyrobot at 1:16 PM on April 14, 2010
sexyrobot, do read the links wreckingball and i posted. the prints are made by exposing b&w paper to the sun and scanning the paper immediately afterwards. in no case was color paper and/or film used.
you may also want to look at gregg kemp's page where he tests different brands of paper.
tarja trygg from solargraphy.com has also written about the papers she uses.
the process is not dissimilar from what is called 'lumen printing'.
more to be found at project vedos and alt photo.
here is another page i like, although the author does state that the colors were 'digitally modified and are false': can photography by maciej zapiór.
so, why is this happening? a friend who hipped me to gregg kemp's page wondered if this were possible only with multi-grade paper (meaning the paper which you can push to certain contrast gamma using colored filters in the enlarger during exposure) and whether this can be done with fixed gradation paper.
i've written to ms trygg and project vedos; waiting for a reply.
posted by vostok at 12:53 AM on April 15, 2010
you may also want to look at gregg kemp's page where he tests different brands of paper.
tarja trygg from solargraphy.com has also written about the papers she uses.
the process is not dissimilar from what is called 'lumen printing'.
more to be found at project vedos and alt photo.
here is another page i like, although the author does state that the colors were 'digitally modified and are false': can photography by maciej zapiór.
so, why is this happening? a friend who hipped me to gregg kemp's page wondered if this were possible only with multi-grade paper (meaning the paper which you can push to certain contrast gamma using colored filters in the enlarger during exposure) and whether this can be done with fixed gradation paper.
i've written to ms trygg and project vedos; waiting for a reply.
posted by vostok at 12:53 AM on April 15, 2010
sorry, i didn't see the second navigation bar, and thus missed a lot of this site.
all i can say is HUH? i have seen undeveloped photo paper turn all sorts of colors in the light, but mostly just grey-brown. ok, now i'm amazed, thanks for correcting me...
posted by sexyrobot at 11:42 AM on April 15, 2010
all i can say is HUH? i have seen undeveloped photo paper turn all sorts of colors in the light, but mostly just grey-brown. ok, now i'm amazed, thanks for correcting me...
posted by sexyrobot at 11:42 AM on April 15, 2010
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