Nothing probably gives a better contrast and highlights a picture, like something yellow on black on monochrome background. To test this hypothesis, I put forward this picture of a yellow flower against a desaturated background.
I came across this meadow brown butterfly basking in the sunlight earlier this week. As such, these butterflies are nervous and don’t allow you to come close. This one, however, let me get to within a foot before deciding I could be a threat!
A small tortoiseshell butterfly in South Cambridgeshire. The most common of British butterflies (so nothing special there), except for the thrill of being able to get so close to this beautiful insect. Click on picture to view large size.