@RochelleM wrote:I have a Canon EOS Rebel T6 camera. I have been looking everywhere for a inexpensive extension tube for my camera. Does anyone have any recommendation/suggestions as to where to look for one?
Thanks in advance!
You match your extension tubes to the focal length of the lens(es) that you want to use. Of course, you would want to use EF mount extension tubes. But they come in different “mm” sizes, just like your lenses.
Here is my advice. Do not buy the least expensive extension tubes you can find. They come in two basic flavors. Those that have lens contacts, so the camera can control AF and lens aperture. And then there are those that do not have any lens contacts, which are really only useful with a fully manual lens.
I recommend purchasing a set of three tubes with lens contacts. I have a set of Vello tubes, which fit very well. There is not play or wiggle room with them. I assume that you already know that extension tubes “work” by effectively reducing the MFD, minimum focusing distance, of a lens.
Why buy a set of three? The best way to answer that question is explain how to select which one to use. You typically want to use an extension tube that measures 25-40% of the focal length of the lens that you want to use.
Smaller than that range, and you may not notice much of difference. Exceeding that range might cause the MFD, minimum focus distance to be shortened to the point where it is actually inside the barrel of the lens.
With most brands, you can stack them together to add up to longer total lengths. And this is where the problems begin with the really cheap brands. The rig starts getting wobbly. The cheaper you go, then the wobblier it usually gets. Wobble means soft images.
