macro tubes?

I need a decent one off Amazon with auto focus. I have a 50$ Amazon gift card. Can someonelink me one. Thanks in advannce.

I have a set of Promaster tubes that work fine. Anything that passes through all of the electrical contacts will work. Setting the aperture is most important. I hardly use autofocus with the tubes anyway.

I use Kenkos and they work fine. Like mike_d said, AF on tubes isn't all that great. I usually use MF to get the focus I want.

So whats the difference between tubes af and normal marco lenses af?

I find I can use AF with a short tube. But tubes make the image much darker, which makes AF work less well (or not at all, if you get enough extension), and also, at the greater magnification, focusing errors matter more.

+1 on the Kenko tubes. I have used a set for years. Don't know anything about the Promasters

paddler4 wrote in post #12919856
Don't know anything about the Promasters

I believe they're Kenko clones/knockoffs.

Any other options?