New User- Need help with breakdown of values (CS3)

[latinamc01]

Hello I am a new user to the photoshop world. I have the CS3 version. I need to figure out how to be able to break down a photo only to 4 values.

A little mor einfo on what I am doing. I have converted the color photo to grayscale and now i have to convert it to only four values so that I can do a painting project and match the four values ( value scale type project). Unfortunately I have no idea where to begin on how to break down the photo to only have four values. Any help would be greatly appreciated.

 

[ronmatt]

try this... at the bottom of the layers palette is a 'circle icon' divided in half ( black and white ) click that and in the menu click on posterize. Open the 'info'
dialog. now measure the levels until you count 4 ( if you're counting black and white ) or 6 ( if you're not counting black and white ). The measurements are in percentages. The higher the number, the more grey levels.

 

[latinamc01]

Thank you so much. I found it and your instructions were easy to follow. I appreciate your help.