I prefer the Pentax XW10 on my TV-85, because of the 20-mm eye relief coupled
with consistant sharpness across the field. The Nagler Type-6 is also great, being
light and compact, but I get tired quickly trying to push my eye against eyepieces
with ER's <12 mm. I also own the TV Plossl 11 mm, which in my opinion are
noticibly sharper and higher-constrast than either the Nagler or Pentax on-axis
(not to mention much cheaper), but its smaller field of view (50 degrees) and shorter
ER makes it less than ideal for me. Again, personal preference, one look is worth
a 1000 words.
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CCK.
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