Re: [Leica] Y2 Filter

["Tom Schofield" <tdschofield@email.msn.com>]

AA discussed this in The Negative and Examples.  Outdoors, shadows are
illuminated by indirect, diffuse light from the atmosphere, being more blue.
That is why yellow, and more dramatically orange and red, filters darken
shadows for B&W.  Same reason shadows can have a bluish cast in color
transparencies, particularly in snow scenes.  As I recall, he had an example
of a picture of red sandstone canyon walls, for which he said that he used
an orange filter to try to lower the tone of the rock, but this overly
darkened the shadows, and he wished he had used a yellow filter.  He stated
that, he had come to the opinion that you don't need anything stronger than
a minus blue, Y-15, filter for landscape photograhy, unless you are trying
for a special effect, such as a nighttime look.

Tom Schofield

> > There is also something about yellow filters stealing the light out of
the shadows.
> > As shadows tend to be cool a yellow filter will steal the light out of
them.
> > But that touch of cyan to make it go yellow-green counteracts that as
well.
> > That's the whole spiel on yellow-green.
> > I've come clean on yellow-green.
> >
> > Mark (What me yellow?) Rabiner
> > Portland, Oregon
> > USA