Quote:
Originally Posted by bandersen
Does this match your set?
First time I have ever seen a focus control on an electrostatic focus set. Usually, it's a jumper with 2 or 3 options.
I've been curious if it gives a smooth focus change. If so, why didn't more sets use a variable control?
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Some 60s Zeniths had it. It didn't have a very sharp peak IIRC so it was probably seen as about as good to jumper (only cheaper) by most makers