Try uploading the file as jpg (jpeg) instead of png. I don't know how that might affect one way or other. Also, if you're "saving for web," some software will scrub exif.
Thanks Alain,
I will try and get some more shots over the next few days. I just stumbled across it yesterday, in a cow field with very few flowers - just the odd withered dandelion and weed flowers.
I feel envious that you have so many different coloured water lilies to shoot. I am fascinated by the depth of the gold colour around the stamens. One would think that they were lit from within, such is the depth of the glow. I have some shots from earlier this year of just one variety. I will dig it out and repost it.