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PostPosted: Thu Jul 18, 2013 9:45 pm 
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Joined: Thu Jul 18, 2013 7:17 pm
Posts: 3
I’m a student at Cornell University working on a design project aimed at creating a formulaic model to predict the color temperature of sunlight at any time and geographic location in the world. Our algorithms are well on their way and we need empirical data to verify our work. Thus, we are turning to the online photography communities to help us out!

We are asking people from all around the world to capture the color temperature of direct sunlight on a, preferably, sunny day by photographing (in RAW) a white balance card pointed toward the sun. From that image we’ll determine the color temperature and add it to our growing dataset. While we want pictures taken at any time of day and sun position, the white balance card musts be placed in direct sunlight.

Please send all photos (in any RAW format) to msf245@cornell.edu and include the following information in the email:
-Location (lat/long, if possible)
-Time
-Weather description (brief: cloudy, clear, overcast, a picture would work as well)

Image


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PostPosted: Fri Jul 26, 2013 10:42 pm 
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Joined: Thu Jul 18, 2013 7:17 pm
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bump, anyone? we are still fielding responses and will appreciate any help! thanks!


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PostPosted: Tue Jul 30, 2013 10:31 am 
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Joined: Thu Nov 08, 2007 6:30 pm
Posts: 6953
Location: The Netherlands, Ridderkerk
It's a very interestng research project and I hope that you'll get some data from our members. The response problem might be attributable to the fact that many of us here do not have white balance cards. I for one don't have one, so as much as I would like to help you out, I am afraid I can't.

- Bjorn

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PostPosted: Tue Jul 30, 2013 4:43 pm 
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Joined: Thu Jul 18, 2013 7:17 pm
Posts: 3
Good point and I have entertained the thought of sending a white balance card around but it then becomes slow and not conducive on a student's budget.

Hopefully people with white balance cards can help!


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