I have undertaken this exercise in the backyard, with simple props to maintain some constency between the images to hopefully see clear results. I photographed a similar scene under the three different lighting conditions; Sunny, Cloudy & Open shade on a sunny day. For each, I used a tripod, and used each of the four white balance options; Auto, Sunlight, Shade and Cloudy. All images were taken using ISO 200, 50mm lens, f/3.5 with varying shutter speed for the different light conditions.
I have grouped them according to the three lighting conditions:
|Sunny day images, with varied WB options|
|Cloudy day images, with varied WB options|
Open Shade on Sunny Day:
|Open shade on sunny day images, with varied WB options|
Second Part of Exercise:
This part of the exercise called for a mixed-lighting scene.
These indoor shots were taken at sunrise at Caloundra, with a lamp on inside. The light levels were roughly similar between outside and inside as recommended in the course notes. ISO was set at 400, and I have used my Canon S95 for this exercise, and would expect the results from my 30D to be very similar.
|Indoor view to outdoors (mixed lighting), with varied WB options|
In this situation, if I had to choose between AWB, Sunlight and Tungsten, I think the AWB does the best job, though it is close with Tungsten. The Sunlight version is much too yellow inside.
The AWB does a reasonable job mostly, but in general I choose the correct ISO for the conditions, and shoot RAW anyway.