A yellow daffodil is ready to burst into a beautiful flower. The close focus distance coupled with a 100mm focal length and an f/2 aperture results in a shallow DOF (Depth of Field) and a strongly blurred background.
I positioned the camera so that the flower and its stem form a smoothly curving line through the image. That line's intersection with the border occurs at the point of its strongest blur.
Camera and Lens Settings
100mm f/2.0 1/125s
5616 x 3744px