If you want to try close-up work, look for a secondhand old model Tamron 90 mm F2.8 macro. I've got one that I purchased secondhand from London Camera Exchange a few years ago. It's probably 20 years old now, autofocus and working perfectly. For a bit less money you can also look for a Sigma 50 mm F 2.8 autofocus macro (I've got a secondhand one of these too), but you will need to be closer to the subject for macro work. Also, both of these are good portrait lenses. On an APS-C sensor camera body like yours or mine, the 50 mm will be equivalent to about 75 mm, and the 90 mm equivalent to about 135 mm, on a full frame camera body. And being 'only' F 2.8 lenses, they are much less expensive (and smaller and less heavy) than the latest F 1.8 (or even faster) lenses that AP reviewers rave about.