I have a Nikon 60mm f/2.8 Micro lens (DX sensor) and I haven't been able to exactly determine what magnification I can get with Kenko 12mm, 20mm, 36mm extension tubes. Suppose I would use all of them together.
Also how many stops of light would I lose using them?
Depending on the answer, is it worth it to obtain the tubes or the macro effect wouldn't be so different and I would lost a lot of light instead? I would buy them only if I could create images with magnification similar to this one