I't an interesting challenge to photograph a white flower in direct sunlight and shade. I often wonder what my photos look like on Nat Geo monitors. Do they set their screens at full brightness or medium? I am sure there is some variation, not just with color, but numerous aspects of image reproduction. Even our camera monitors. On a bright day we set them at full brightness so that we can see our photos in the ambient daylight. Maybe we should use a black sheet to fit over our heads.