Digital BW, The Print

> 
> Subject: RE: Re: Convert to B&W plugins
> 
> Mark,
> 
> I still don't understand.  Why can't you get the exact same effect in PS on
> a file that is grayscale?  All a filter does is shift/modify the tonality,
> and you can easily do that in PS to a grayscale file.
> 
> Austin


Austin

In "theory" you are right, but in practicality I think you are  mistaken.

Once the color values are gone obviously you lose the ability to make
adjustments based solely on them, which is one basic idea of filtration in
b/w photography, to change the greyscale values of different colors with
similar densities so you can more clearly distinguish between them as
greyscale objects. 

You can isolate the greyscale objects themselves according to shape, or
density (more difficult, ie "dark red jacket in evergreen trees")  but this
is significantly more difficult than having the color range tools to work
with.    




Andy