Equitant = A flat fan-like arrangement

I’m a bit late for this challenge (the 10-day rule). Nevertheless……

It’s wrought iron and hangs on a wall in our hallway. The wall is white, the iron fan-like leaf arrangement is black. Apart from the shape there’s not a lot going on. Then when I’m playing in the adjustments pane in the software I see a button and wonder what will happen if I click on it.

I’ve discovered more in the past 11 days than I have in the past 11 months. Thank you Blip.