I've always stayed away from stacking teleconverters, or even using my 2x converter. My testing has shown me that anything more than a single 1.4x converter is inferior to simply using the 1.4x on its own and cropping.
BUT
Sometimes it's fun to try.
So I went crazy!
This is shot with GFX100S and Pentax 67 400mm EDIF lens with 67 1.4x converter AND 67 2x converter AND 645 1.4x converter stacked.
The loss of sharpness doesn't matter so much when it's foggy, so it seemed like a good moment to try it!
What you see on the hilltop is the Baháʼí temple in Ingleside (north of Sydney)
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