Digital Negative Curves—The Lost Transfer Function

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Ender100@aol.com
Date: 04/23/03-11:15:47 PM Z


Judy, I noticed in Post Factory #8 you thought you had lost the Transfer
Function when you upgraded to Photoshop v. 7.0. I admit it, I took it, but
I am going to give it back to you. Instead of selecting PRINT, select PRINT
WITH PREVIEW and look in the lower left hand corner for one of those pop up
menus—it will either say COLOR MANAGMENT or OUTPUT—set it to OUTPUT and
Shazzaaaammm!! In the second column you will find highly prized, much sought
after Transfer Function. Now you won't have to open up Photoshop 4.0 to put
the final curve on your file. That should speed up your workflow a bit!

I think there was a time, a number of versions ago when the Transfer Function
gave you more control than curves, because it allowed you more control
points. Transfer function still has 13 control points counting the end
points—however, CURVES function now gives you 16 control points including the
end points. I like to use CURVES function.

If you OPTION/CLICK on the grid in the CURVES FUNCTION window, it will give
you a finer grid.

If you click on the bar below the grid that swaps the direction of the curve,
you can have it display the % of a point OR the gray level (0-255), whichever
you prefer. Notice that when you click on a point on the curve, there is an
INPUT and OUTPUT box where you can directly enter values for input and output
in percentages OR in gray levels, whichever you desire.

If you are working with an 8 bit grayscale file, you can just add an
adjustment layer for the Alt Photo Curve of your choice. Then you can save
the curve with the file and it can be undone at any time later.

If you are really cool and keeping your files always at 16 bits, just do the
curve, save it, print your file, and then undo before saving.

Hope this is helpful.

If someone has already addressed this issue, I apologize for wasting your
bandwidth—I seem to be one of those folks on the list that doesn't get all
the posts to this newsgroup. Thanks, I guess to Big Brother AOL. I
suspect that Sam Wang can read everything that I type on my computer.

Mark Nelson

PS: Has anyone tried to paint with a level 10 (0-255) in Photoshop
Grayscale File and been successful? Try testing it with the INFO Box
afterwards and see if it still registers 10 on the grayscale. There do
seem to be a number of levels you can't access—darn and they are in the
highlights of the negative! I ran into this while making the Mother of All
Step Tablets. Judy, it's a Rolls Royce now, not a Cadillac. hehehehee


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