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Originally Posted by Starkler
John if I recall correctly, you used to own a couple of XL's that you replaced with XW's. Do you notice much of a difference between them ?
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Geoff,
No I used a couple of Pentax XL's a few times, the 1st time in Florida about 5 or 6 years ago, which ultimately caused me to buy 4 Pentax XW's, when they came onto the market.
There is not much difference between them but I have never A/B'ed them either. You have to assume that the XW's are marginally better due to technological advancement with glass types and partial phase coatings. As Al Nagler was recently quoted in Astronomy Magazine, "We discontinue an eyepiece only if we can make a better one of that focal length"
CS-John B