New kid on the Block
a)the upper half of the lens would form a image down side but not complete.
b)the lower half of the image would also form a image but above the principal axis.
Moderation Team
![[Post New]](/templates/default/images/icon_minipost_new.gif){kind=icon}
![[Up]](/templates/default/images/icon_up.gif "[Up]"){kind=icon}
0
