From the closed thread in the ATM forum
What scopes are you using it in ? What's the afov? How's the field correction? What eyepieces are you using for comparison?
OK I checked it out again tonight and (please bear with me I'm new to this scope forum thing) using my 6" F8 Synta lensed home brew refractor, field curvature was only apparent at the very extreme edge of the field.
I don't know how to determine FOV so I timed a transit of Jupiter. From the time it entered with 50% of the planet visible. till exit with the same amount showing was 49 seconds.
This eyepiece is solidly in the middle of my Ultrascopic 3.8mm and a 9.something Meade 4000 series plossl, as far as magnification goes.
I've compared it to those EP's mentioned as well as other Meade, Celestron and Sirus plossls and MA's