Curves: Map settings and Transfer functions

PE
Posted By
phoney.email
May 26, 2004
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586
Replies
2
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Closed
PS 6 here… Two questions about curves:

How do I create Map settings (*.AMP) files by exactly specifying all 256 points using numbers instead of drawing with the pen tool?

What are Transfer functions (*.ATF files)?

Don.
Related Tags
curve function map settings transfer

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H
hoffmann
May 27, 2004
(Don) wrote in message news:…
PS 6 here… Two questions about curves:

How do I create Map settings (*.AMP) files by exactly specifying all 256 points using numbers instead of drawing with the pen tool?
What are Transfer functions (*.ATF files)?

Don.

Don,

transfer functions are functions for CMYK toner, which
are inserted between the normal toner calculation output x and the machine input y.

Standard is y=x, the default straight line in the diagram. x and y represent each channel of C,M,Y,K or all together.

E.g. darkening the midtones is done by a banana upwards shape.

A very helpful tool for adjusting uncalibrated laser printers, Unfortunately it works only on Photoshop level. Much better it would work for all Windows applications.

Transfer functions can be defined in PPD files for PostScript printers, but as far as I know it works only with PageMaker. Photoshop and InDesign don´t show these new PPD features.

Best regards –Gernot Hoffmann
PE
phoney.email
May 27, 2004
On 27 May 2004 01:06:31 -0700, (Gernot Hoffmann)
wrote:

(Don) wrote in message news:…
PS 6 here… Two questions about curves:

How do I create Map settings (*.AMP) files by exactly specifying all 256 points using numbers instead of drawing with the pen tool?
What are Transfer functions (*.ATF files)?

Don.

Don,

transfer functions are functions for CMYK toner, which
are inserted between the normal toner calculation output x and the machine input y.

Standard is y=x, the default straight line in the diagram. x and y represent each channel of C,M,Y,K or all together.
E.g. darkening the midtones is done by a banana upwards shape.
A very helpful tool for adjusting uncalibrated laser printers, Unfortunately it works only on Photoshop level. Much better it would work for all Windows applications.

Transfer functions can be defined in PPD files for PostScript printers, but as far as I know it works only with PageMaker. Photoshop and InDesign don

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