Stalking the Wily Analemma
avi33 writes "Wired has an article on the short list of photographers seeking to capture a shot of the analemma - the sun's figure-eight-shaped declination in the sky over the course of a year. Only a handful of people are known to have done this, and of course the obstacles are many: maintaining the equipment and its positioning, the finicky nature of film, the weather, and the photographer's persistence. Is it just me, or is this crying out for digital automation? Mount a cam to a hardpoint, have it snap a shot every x hours, and overlay them? Why I bet some of you could do this with a perl script in an afternoon. There's a shortage of photos from outside the northern hemisphere, so get busy."
Did the submitter read what he wrote? It needs to be over a year. And the people doing it on film would not consider doing it with a digital and software to be an achievement. Kinda takes all the challenge out of it.
The whole point of an analemma is to do it on 1 piece of film - no fair taking multiple shots and compositing.
Sure, taking the picture itself can easily be automated.
But fixing a camera to a location so that it will not move DAMMIT (relative to the earth, that is), so that it won't get covered in snow/leaves/pigeondoo/..., so that the film won't be ruined by being out in the elements for a year, being in a location where you can reasonably count on having clear skies enough of the time to get the shots (a month of clouds will really screw you up), being able to judge the exposure needed for the sun shots without overexposing the film, then getting the final exposure (to get the background) right....
That takes a lot of skill that you are not going to be easily able to compress into a Perl script.
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