My dedicated autofocus macro lens was in use elsewhere, so I brought with me a manual 28mm macro lens I picked up from a bargain bin somewhere.
The butterflies posted in this series are all taken with it, in a live run, so to speak, with the glass. I was pretty happy with the last batch of butterflies I posted and so is the 28mm lens turned out to be a dog, I wasn't going to lose anything.
As you can see, it's pretty sharp. Not bad for a 10$ lens.