Post your sketches here!

[Squishy Cheeks]

Originally Posted by tweebus

I use a #2 pencil on typing paper. It's too light so I then scan it and with
PhotoImpact 5 then use contrast & lower the gamma. (whatever gamma is).

As a photographer/graphic designer/printer you make me sad. Know your craft. Control the means of production.

Gamma Correction is the necessary shift made in output devices so that an image can be made as close as possible to the information.

In optical outputs there are three colors
Red
Green
Blue

in printing there are four colors.

Cyan-blue for the ignorant
Magenta-Almost red.
Yellow- self explanitory.
Key - Denisty of luminance

you need a mathmatical formula built into most recording and output devices to make the adjustment so the input can be made into output that is perceivably more uniform.

Gamma=[d x log(Vout)]/[d x log(Vin)

The image information needs to be simplified for production, mainly because what your camera or scanner can see is a vast ammount of information that neither your monitor or prints can reproduce fully.

in photoshop when you are in Curves, you are making a manual gamma correction of the selected channel.