One issue you may have is that to join two lenses, you’ll want the outer (reversed) lens to be a manual lens, so you can control the aperture using the ring on the lens. I don’t know the details of your lenses, but if they’re AF-S or equivalent, that may not work.

As noted above, if you did connect those two lenses, you’d want the larger lens (the Tamron) connected to the camera, and the other one reversed. And because of the filter size difference, you may need to attach a step-down ring to the macro coupler to make them fit together.

Yes, you can certainly use a macro coupler without extension tubes; in fact, I have not used both a macro coupler and extension tubes in the same setup. But with extension tubes, again you’ll want to have a manual lens so you can set the aperture with the ring. The exception would be if you have the much more expensive extension tubes with electronics built into them, allowing you to use the lens’s metering and autofocus functions as if it were attached directly to the camera.

Without knowing more about your camera and lenses, that’s the best answer I can give. I hope it’s helpful. Happy macro-ing!

Scott

i want to use macro coupler(reverse ring). i have tamron 70-300mm(62mm filter size) and nikkor 18-55mm..is it compatible? or is it possible if i only use macro coupler even without the use of macro extension tubes?
thanks.

Greetings Tina

Julie — I don’t know their names…Not that familiar with Portland. So I’ll take your word for it.