https://visualeducation.com/class/controlling-mood-and-emotion-in-an-image/

  When it comes to photography, the very best images will always convey a certain mood or emotion. By using a particular light, or type of light, we, as photographers, can control the mood and feel of an image by making adjustments to things like the direction, position, hardness or softness and even temperature of the light.  In this course you’ll learn how you can create two very different images by completely changing the look and feel of an image, even if it’s the exact same subject and composition.  Shooting an overhead shot of an eyewear designers desk, Karl first demonstrates how to create clean, bright lighting, similar to what you’d expect in an office. He then creates a far more evocative lighting setup, recreating the light you’d expect to see with early morning or late afternoon sunlight streaming through a window.  These two comparisons clearly demonstrate why light and mood are so important in photography and how, by using the right modifiers, you can create almost any look.