This ambitious eyepiece does not disappoint with its 120° field of view. Images are quite acceptable on axis when used on telescopes as fast as f/4.5. Contrast is fairly high. Towards the edges, lateral color is so pronounced that the spectral type of some objects can be determined (maybe an advantage after all?. Incredible 'spacewalk' effect on star clusters and bright galaxies. Not usable in daylight - when the eye's pupil is small, the whole FOV cannot be seen at once, and there are annoying, changing color hues across the FOV. Rather disappointing on the Moon for the same reason.