Quote Originally Posted by David Lyga View Post
What you REALLY have to beware of are the short lenses like 28mm or, worse, 24mm. These are VERY complex as to how the elements are put together and, just as important, which SIDE of the element is to be placed.
Are you specifically talking floating-element or CRC lenses? I'd think the same level of attention to detail would hold for any lens (strict order and up/down orientation being followed). Is there something specific you meant by "side" of the element? I'd think that one would never willy-nilly flip an element regardless of it being an 18mm or a 50mm lens but wanted to understand if you meant something else.