Personally, I only use teleconverters with prime lenses, not with zoom lenses.
You will invariably lose some quality whenever you use a teleconverter
and zooms already have enough quality problems without compounding the issue.
Nice images. You through me off with the word "clot" in the title.
I presume you meant "cloth".
Are you suggesting that "meanness" and being bald go hand in hand?
A "fish-eye" would certainly not be your everyday "walk around" lens!
This photo was taken last night with a Nikon D3400 camera converted to "full-spectrum"
(which means the infrared blocking filter over the image sensor has been removed).
I did not use any filter on the front of the lens.
Vivitar 8 mm "fish-eye" lens.
ISO 100; 30 second exposure; f-stop unknown.