On Fri, 29 Nov 2002 13:27:37 +0100, Nuuccha wrote:

>In case the coating cuts a narrow band from input spectrum, it will
>certainly reduce the observed chromatic aberration

>Mike Tyner wrote:
>> Not zero, but not measurable.

I think MT's answer is correct...
At least on any "normal" lens, if the
coating filtered a color strongly
enough to affect observed CA, it would
be unacceptable for use as a lens for
general photography...