View Single Post
  #8  
Old 26-05-2018, 05:35 AM
Don Pensack's Avatar
Don Pensack
Registered User

Don Pensack is offline
 
Join Date: Aug 2006
Location: Los Angeles
Posts: 501
My own experience was the reverse, with the 20mm ES displaying a fair amount of outer field astigmatism. This is in an f/5 scope with a Paracorr coma corrector, so a very flat field with no coma.
That being said, it's a bargain, price-wise, especially now with the sale price.
Reply With Quote