Well Hanek being an amateur i know little about camera lenses...but i do know that astro-telescopes give an inverted (upside down) image to save loss of light when using correcting lenses, and to anybody (astronomers) focusing on distant faint astral objects light is all important..so i wonder if you have been looking at the moon through an astro-telescope, giving you the impression that what you are looking at is the right way up...hoping you can understand what i am trying say.. Skyball.....