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Old 19-11-2017, 06:39 PM
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billdan (Bill)
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Join Date: Mar 2012
Location: Narangba, SE QLD
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Hi Lee,

That CFZ of 66 microns at F5 is for diffraction limited optics, as we are seeing limited the CFZ is more like 200 microns. That will give you a bit more breathing space.
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