A mother's day gift on the deck offered some photo ops'. The goal was to fill the frame with a blossom in full focus. The first issue was the lens focal length. At 90mm the lens put a significant part of the blossom in shadow. The addition of a 21mm extension tube solved that. I began by progressively stopping down each subsequent exposure until I got down to f/22 that's when the full blossom was in full focus, but some of the leaves weren't. At f/32 all of the frame came into focus.