Mystery

Some kind and knowledgeable blipper will tell me why I am getting the spots on my photo. Only on the shots of the chair, not before or after so not the lens.
We had a lovely drive out to a farm shop for a coffee this morning, back for lunch and spent the afternoon in the garden.
Not often I do nothing but today was the day for sitting and reading and enjoying the warmth of the sun and the shade of the garden. We took Hetty out early and then again around five although it was still around 23 degrees. She is much better running around the garden in this weather.
Sat in my favourite spot for about three hours, only moving to get drinks, and managed to finish the book I started seven days ago.