Thread: Calculating/maintaining back focus
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Old 23-09-2017, 06:29 PM
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scagman (John)
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Join Date: Apr 2011
Location: Kinglake West
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Thanks Guys,

So 34.83mm is what I need.

That is

100+.33 -4 -61.5 = 34.83

Very much appreciated.

Cheers
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