P3D Filter quality

["OLE HANSEN" <olejohan@xxxxxxxxxx>]

Mark Dottle <markaren@xxxxxxxxx> wrote:

> Perhaps I need a scientific explanation or another beer! :-)

Probadly both - Go get the beer - and I will try to explain :)

> A filter mounted over a lense does not appear to affect the
> image....Here is an extreme example....Taking the blister
> plastic wrap.....I placed the plastic very close to my eye
> and took a look through it. I did the same with a couple of
> sky 1A filters. I COULD NOT tell the difference.....

You only forgot to concider the aparture of your eye, which
is so small, that you can see (almost) no distortion because
you look through a very small portion of the plastic.
The aparture of a cameralens is many times larger, and reveals
the uneavenness of the plastic right away.
best regards
Ole Hansen - olejohan@xxxxxxxxxx



------------------------------