If you can't afford it don't want to dedicate your lens budget to a macro-specific lens, buy these, 11 & 16mm macro extension tubes. Check Fujifilm's provided "macro extension tube magnification chart" to see which lenses they pair beat with.
This is a well made accessory I would recommend for shooting in the field for small subjects. When used with a telephoto lens it allows the subject, ex. butterfly, to fill the field and be in focus.