But that argument only applies if the original images of the ships were small and they were using the mirrors to enlarge them. Being parabolic, it would seem to me that the mirrors were being used to focus the images and project them into space, not enlarge them.
After all, wouldn't that be like enlarging a picture in photoshop? Sure, it gets larger, but it also gets more pixelated.
I can just imagine the Kazon saying, "No, those Talaxian ships are fake! I can tell by the pixels!"