Hi Nick
I have the Denk 21s and there is a little degradation at the edge in my F6 100mm binos. In an F13 100mm refractor, it just doesn't exist (to my less than discerning eyes)... For me they are excellent eyepieces. The light throughput is very good and they have very good contrast and a fairly neutral colour rendition.
Just out of curiosity - can anyone comment on edge performance with the Panoptic 24s?
Andrew
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