These are the main questions that I posed for this project:
- How do the colors of the creek change throughout a day?
- How does the colors of the creek change over the year?
Procedure at the creek
On the solstices and equinoxes of one year, I spent the entire day from before sunrise to after sunset at the gauging station of Watershed 2 at HJ Andrews Experimental Forest. Beginning precisely at sunrise, I took a photo of the creek bed in ten minute intervals until sunset. I placed my white rock, like a secchi disc, in the middle of the creek bed to give an indication of the clarity of the water. Two images were taken each round: the first image included a color checker, the second was without.
Each image was color corrected using the neutral gray of the color checker. Then, using a midpoint f-stop, the image exposure was corrected to compensate for the exposure needed for the camera to capture an image that was neither underexposed or overexposed. The goal was to create a more precise pattern of the light changes throughout the day.
After the corrections were made, I sectioned off the images using a 5 x 8 grid. One point was plotted in the area of each gridded space and a color sample was taken from the correlating spot on each photo.
Each season has a set of 3 panels: The two end panels are 40 x 18 in. Forty colors of the first three hours are painted on the first panel and forty colors of the last three hours of the day are painted on the third panel; The middle panel of each season is also 40 in. tall, but the width is variable depending on the number of hours in the middle of the day.
The white bands in the paintings are colors taken from the white rock.
Watershed 2, H.J. Andrews Experimental Forest, Oregon
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