The metadata below is somewhat misleading and I now feel somewhat irresponsible for not dealing with it beforehand.
It must be noted that this picture has been retouched by desaturating the sky and water, boosting the contrast of the sky and by vignetting the sky in 3 passes and the water in 2. The shrubbery remains unedited, though is under one layer of the sky vignetting and one layer of the water vignetting.
The photograph was taken at approximately 2:15PM, 22 January, 2008 at Woy Woy Channel.
Oh, and the obvious steps in vignette were intentional.
If it displeases anyone, I can supply a copy with a more seamless vignette. I did it as such to illustrate the "digital imaging" point in Vignetting.
Extended Information
I went through this in the Wikipedia upload but I'll try it again, with a bit more articulation.
EXIF Information
The EXIF information is slightly incorrect. Obviously the picture was not taken at 5:13AM on the morning of March 16, 2008, because that would imply that I have travelled through time.
Instead, the photo was taken at approximately 2:15PM on Monday 22 January, 2008.
The light source was the humble sun.
Editing
The purpose of posting the picture was to supplement the vignetting article on Wikipedia by adding digital imaging as a means of vignetting. As such, I manually vignetted the picture post shoot.
I did this by first creating a desaturation mask for the sky and water, and then adding three heavily feathered masked black layers to the sky and two to the water. This is what created the vignetting.