On Sat, 17 Aug 2002 18:47:02 +0200, "Q.G. de Bakker" wrote:

>Neuman - Ruether wrote:
>
>> Um...
>> The same should be true for super-wides, but
>> removing/replacing a large/thick Nikkor filter
>> from an 18mm or 17-35m does not appear to change
>> the image at all...

>The same is not (!) true for wide angle lenses. That is, unless the object
>is very close to the lens, like when doing macro photography. The angle of
>view of the lens does not plat a role. It is the opening angle of the cone
>of rays coming from the subject captured by the lens that matters. Only
>increasing proximity to the lens and diameter of front lens will effect
>this, not angle of view.

You appear to be right.
Thanks.