>>3438389Cheap:
•Reverse Ring with Aperture Adapter
•Double Coupling Ring with Aperture Adapter
Fair Price to Expensive:
•Extension Tubes (with/without AF depending on your lens)
•Macro Bellows (with/without AF depending on your lens)
Expensive
•Dedicated Macro Lens in whatever magnification ratio you want starting at 1:1
Vintage all manual lenses are fairly cheap and fun to use for macro. Either get a macro one that is 1:1 or just reverse the lens. You can score some nice gear, like those microscope adapters. If you go beyond 1:1 ratio I suggest getting some really good powerful lighting, a 4-way rail, and tripod with sandbags.