Quote:
Originally Posted by multiweb
I have a varilock and a FFC but I've always used fixed length tubes. GSOs 2". Why did you want to use the varilock. Do you need very precise distance with the FFC to get an exact magnification?
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I haven't actually used the FFC so I can only go off the available information about what distances are required to achieve certain magnifications. I doubt I will ever use the FFC to achieve 8X but maybe 5X is a reality. I thought the Varilock extension tubes may offer a bit more versatility compared to the fixed length extension tubes.