Diamonds and Lighting?
If you have someone ask you why diamonds may appear dark in sunlight sometimes the photos below may be helpful. The pictured stones are research CZs from Moscow State Univeristy.
The top photo was taken in low-lighting.
The bottom photo was taking in bright lighting (yes you read that right).
Why is this? Our eyes react to bright light the same way the iris of the camera does. Go from a dark building into a sunny street and your eyes take a moment to adjust because the pupils are closing to allow less light in overall.
Note that the round, which returns a higher volume of light, is brighter in low light (when the iris is accepting all light) and darker in bright light (when it’s filtering the brightest spots) than the squares. Interesting, no? Photos courtesy of Sergey Sivovolenko, MSU & Octonus.
Something I battle on a daily basis…