For our purposes, any flower from the garden would make a good subject....
We collected a few and played a bit more.....
A hibiscus stamen using a very narrow depth of field with just a few clumps of pollen in focus.
Murraya made a great subject
Probably a bit too close -
We took a series of shots at various focal lengths and various exposures to see the difference it made.
a pawpaw flower
Of course extension tubes are not as effective for macros as a proper macro lens, but then they are very much less expensive. I'm happy to experiment with them and keep learning. For a very amateur photographer like me they are perfect. Thanks again Santa.