Being a photographer, I've photographed many leaves with rain drops, morning dew. If you look closely each drop is like a magnifying glass with curved lens. This will enlarge an area withing the drop. There are of course many drops on a leaf. When a bright light source hits the drop on the leaf side, it's magnified. During the bright day, it could affect the leaf and cause burning, even if minutely. I always water as mentioned early AM or late afternoon the light is subdued. Have pics, if allowed to email to OFA.
Being a photographer, I've photographed many leaves with rain drops, morning dew. If you look closely each drop is like a magnifying glass with curved lens. This will enlarge an area withing the drop. There are of course many drops on a leaf. When a bright light source hits the drop on the leaf side, it's magnified. During the bright day, it could affect the leaf and cause burning, even if minutely. I always water as mentioned early AM or late afternoon the light is subdued. Have pics, if allowed to email to OFA.
My $0.02.