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Focus Gears


Chris Hood

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Chris,

 

"What is the gear pitch for zeiss superspeed lenses?"

 

32 Pitch for focus

48 pitch for iris

(note Heden claims that .5 is the same as 48 pitch. In reality, close but no cigar. You might get away with it, but there is a good chance the gear will slip off because it is not exact. True 48 pitch works a lot better)

 

Panavision:

32 Pitch for focus

64 Pitch for Iris

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