Focusing at high magnifications or head elevations is a problem. Zone VI / Calumet does / did make a focus extension rod that fit on one of the focus knobs. My solution was to make a wooden arm with a hole for the Zone VI focus knob and a split down the long axis that fit around the focus knob. When I gripped the wooden arm, it would tightly grip the focus knob and allow me to fix final focus with the grain magnifier.
Perhaps a moderator could edit the thread title so that future searchers can find it when looking for "Zone VI."
. . . 2) Is there a focus extension available? And where?
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