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Televue Dioptrx and your Pentax XW40 and XW30

Posted by Greg Nowell 11/25/2007 09:16PM

Televue Dioptrx and your Pentax XW40 and XW30

Low power, wide field views in the fabled Pentax XW40 and XW30 eyepieces are compromised by your own astigmatism. Fortunately the TV dioptrx is right at home on top of your 30 and 40mm Pentax XWs.


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