Quote:
Originally Posted by janoskiss
Arthur, IMO the Panos are not in the same league optically as the 30mm XW, the latter being practically aberration free right across the FOV at f/5 and superior comfort. Like S2S says 55mm Plossl is not a good choice for an f/5 scope.
S2S, Pentax EPs I've used, XWs and XFs, seem to be spot on wrt specs. 70 and 60 degree FOV, 20 and 18mm eye relief, resp. No more no less.
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Thanks Steve, you are probably right about the Pentax specs. I must be comparing to other widefields that don't meet their published specs. eg.When doing a side by side comparison with even another decent quality wide field like the TMB (69 deg), the Pentax was easily 5 deg or more wider, not 1 degree as it should have been! You should hardly notice 1 degree difference I would think.
I wasn't saying the XW's are as wide as Naglers. They are not, but in terms of easily usable field, and this is very personal no doubt, they don't really lose much at all. Anyone agree or disagree with this?
In the end, both of these (31T5 and 30XW) are premium chunks of glass and do perform extremely well,
Very Clear skies !