have a Pentax PF-80ED scope I got from you guys a couple of years ago.
I've been using a fixed eyepiece (Pentax XW 14mm), which gets me 36X.
I'd like to add a higher-mag eyepiece for a better look at distant
little things (peeps will be here soon!), but I'm torn between stopping
at 50X (10mm) or going up to 72X (7mm). I'm worried about the
brightness and FOV trade-offs, but a fixed eyepiece might make 72X
Thanks for your inquiry. You are correct about the trade-off in
magnification for brightness. I would stick with the 50x--that should
satisfy your need for greater magnification, but not tax the performance
of your scope with its 80mm objective lens size. Remember, you have a
month to try it out with our 30-day Return Policy!