It depends on the extension tube and lens in use. Magnification is limited with filters and loss of sharpness will be noticeable at wider apertures. The best method is extension tubes. You don't have to own macro lenses to take quality close-up shots. Any quality short to medium lens with extension tubes will work just fine.
Tubes are inexpensive and easy to carry.
The best buy is Kenko extension tubes. They are available in autofocus with full camera contact including auto diaphragm. I use mine on my 100mm macro lens for increased magnification as well as my other lenses including zooms. Keep in mind that with zooms, you need to refocus if you zoom back and forth. Zooms without extension tubes don't require you to adjust focus if you change zoom setting.