An even dozen of Spring's finest: adventures with a new lense

Just received a new, inexpensive Sigma 70-300 4.0-5.6 D lense the other day and among other things, it features 1:2 macro capabilities...locked in between 200 and 300mm's.

Because the weather is nicer than it has been, because there are lots of people (including myself) with flowers abloom nearby, and because I badly wanted to play with my new lens I went on a macro shooting spree. Haven't done macro in over thirty years so the first efforts are a bit rusty, but given that it's a cheap lens and I'm "out of shape" I don't think these turned out too bad:

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Comments and criticism always welcome.