Impossible in the Daytime
I enjoyed this eyepiece at nighttime with a 6 f/8 APO. In the daytime, the entire outer field is bright orange. Ive read some reports of it being insignificant, I have no idea how someone could come to that conclusion, it was bright, orange, and obvious. Id guess the outer field color correction is just as bizarre at night, except that its too dim to pick up on. I never tried it on the moon or Venus off axis. For the cost and the daytime performance, I could never love this eyepiece.