For a $150–200 budget, extension tubes are a strong option to consider for your Panasonic Lumix GF3. They fit between the camera body and lens, letting your existing lens focus much closer for macro-style shots, and they’re usually much cheaper than a dedicated macro lens. If you’re just starting out, they’re often one of the best low-cost ways to learn macro photography before investing in a true macro lens. Keep in mind that extension tubes reduce focusing distance and can make shooting a bit less convenient, but they’re a practical budget-friendly starting point.