Hi Jude -- It's a backlit image for me. Love the delicate petals and soft pink/apricot color. One of my favorite cottage garden flowers! Would love to return to La Veta to see you and Ernest + photograph your garden next year :-).
Jude, I think it is back lit image, verging on silhouette - but the back lit aspect is, to me, what makes this work. If it were silhouette, you would lose all recognizable shapes and I would not connect with the image.
This was a hard one for me as I am busy playing with my 3 year old granddaughter and her Dad. We have had nothing but rain but a bit of light came through the other day and the Holyhocks were lit up by the sun.