[filmscanners] RE: how to scan 'red' 'green' or 'blue' lights?

["Frank Paris" <frankparis@comcast.net>]

I like to photograph the paintbrush flower in the Pacific Northwest. In
some examples, there is nothing redder on the planet. I use the SS4000
on Velvia and have never had any of the problems talked about in this
email. I wonder what gives?

Frank Paris
frankparis@comcast.net


> -----Original Message-----
> From: filmscanners_owner@halftone.co.uk
> [mailto:filmscanners_owner@halftone.co.uk] On Behalf Of snsok@cox.net
> Sent: Monday, January 20, 2003 8:44 PM
> To: frankparis@comcast.net
> Subject: [filmscanners] RE: how to scan 'red' 'green' or
> 'blue' lights?
>
>
> I have also noticed this phenomenon with images that contain
> certain reds.
>
> In my geographical area, we have intensely red azalea blooms
> in the spring that are very difficult to reproduce.
>
> I am not sure if the problem is in the scan (I use the
> SS4000) or in the transparency image itself. It seems that
> detail is lost in the mass of red flowers, as though the red
> was overwhelming whatever weaker colors might be present to
> give shape and contrast to the flowers. It's as though such
> red objects lose shape and texture because the film--or the
> scan--registers the red to the exclusion of the weaker colors
> within the red areas. Indeed, in one image I have with this
> phenomenon, I see RGB values of 225-0-17. So it's not that
> the red is "pegged" at 255.
>
> Dan Margulis in his Professional Photoshop book shows
> examples of how blending back in some of the weak colors can
> overcome this phenomenon.
>
> So I don't think it's the redness of the red that creates
> this appearance, but more that these red areas tend to lack
> the contrasting colors that give dimension and shape.
>
> As sharp and as fine as Velvia is, I find it tends to block
> up with these reds, creating the illusion of detail loss in the reds.
>
> I am not a color maven so forgive my tongue-tied prose.


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