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Barlow, Powermate, or Tele-Extender for DSLR?
Hi All,
I'm after advice on which method is best for multiplying your focal
length using a DSLR on an ED80.
Options I see at the moment are:
Televue 2" 2x Big Barlow
Televue 2" 2x Powermate
Canon 2x Tele-Extender
Which would be the best for optical quality and usability?
Of course the Barlow/Powermate could also be used with other
cameras on any scope, so might be more utilised.
Cheers,
Jason.
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