Yes, my first image was really backlit.
Ok, the sun was not exactly 0° in front of me
But it doesn't come from my back when shooting.
The sun came from tiny space between foliage, that means only a few minute later the Flower was not lighted anymore !
And the day after (same hour and minute), no more illumination of that flower, simply because the sun was lower in elevation.
Have a Nice Day.
Thierry