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Dazzler:
Keep in mind that you might be doing outings with a local astro club to a dark site. If, on the other hand, that's not on the plans then 10 mm may be too much for suburban skies. Sad, because I don't think I've ever read one adverse word about the Pentax 10 mm.
With the LX90, I'm actually much more comfortable using the 18 mm Radian with its 60 deg. AFOV and the 27 mm Panoptic.
You'll notice the difference you mentioned vis a vis television. 65-70 deg. AFOV EPs are noticeably more involving than 50-55 deg. Plossls. More so if it's quality glass like Pentax or Televue.
Mark.
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