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@green - any reason you went with 62mm specifically? Is it substantially wider than the 72mm? Always wondered if the various opteka lenses are the same from 52-82, just a different opening.
they're all clones of the MK2 lens just with different thread sizes
I definitely have to zoom if further with the 52 compared with the 72…
yes because you've spaced the lens out with an adapter ring. the optics are still the same.
I am also interested in this.
So, the back element of the opteka is the same size for all fisheye thread sizes (52mm, 58mm, 67mm and 72mm)?
Would I get the same image using a 72mm to 72mm spacer + the 72mm fisheye version than with a 72mm to 52mm adapater + the 52mm fisheye version? (provided that the back element of the fisheye ends up at the same distance for both cases)