Simply Sunday "Luminance"

This weeks "Journal Prompt is the word: Luminance. The condition or power of being luminance. The photometric measure of the luminous intensity per unit light traveling in any given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle. Today I chose this word due to how I was feeling. The weather is changing, light is changing and how it is illuminating the areas in which we live and work can affect us. As artists we constantly use light in how we interpret things we view, photograph and how our creations end up looking on a canvas or other medium. I don't think we often think about how much light can affect us, how we interpret our work and our working environments. We can change the luminance whether it be from angling a overhead light to using candles which then changes that measure of intensity. I often look at things in different light and angles when working on projects and it is amazing to see the difference.
Take a photo in different lights and see the differences it can make in your results. Print and tape these in your journal and write about what the differences were in your lighting. How it was effected? If you are interested in seeing about optics and the laws of Illumination just click here.. Fascinating, a bit over my head but I do get the basic concepts and its very interesting! I sometimes wish I had the capacity to understand more scientific jargon! But I will settle for a good photograph!
Are you affected by the change in light fall and winter brings us? Do you use a light box when doing photography? Do you look at your art in different light to see differences in how it appears?
[Art] first of all is optical. That's where the material of our art is: in what our eyes think.~ Paul Cezanne