The flower of a Water Crowfoot Ranunculus peltatus, up close to show the pyriform honey pits (nectaria) seated at the yellow claw of the petals. The shape of the honey pits is a key diagnostic in this complex species aggregate.
Initial magnification 2.5X, here a 100% crop to show the detail transmitted through the Laowa 25mm f/2.8 lens on my Z7. The flower is very delicate and wilts rapidly when lifted out of the water, thus I had to shorten stack length to just 60 frames. Thus full range in-depth sharpness suffered, however what remains is rendered stunningly sharp. The honey pit is lower right on this frame. Individual pollen grains are easily seen, as well as irregularly shaped dust particles (from a low-traffic dirt road nearby) which obviously are trapped on the sticky carpels. The receptacle of this species has a thin covering of hyaline hairs, and these are plainly visible as well.
