Coupling ring macro question

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Name
Robert
Edit My Images
No
I'm looking at getting a coupling ring for extreme macros, however before I do I need to know what lenses will work together. I have a Nikon 80 200 2.8 and a Tokina 11 16 2.8, would this combo work? If its too wide what is the widest I can go? I'm using a crop body if that makes any difference?

Typing on my phone hence a bit short, sorry.
 
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