Does anyone know how to change the color depth of a image ???

i would like to change the color depth of a image i have and in order for me to be able to use it i need to change it to a specific color depth and dpi.

I have adobe photoshop cs2 and jasc paint shop pro studio.

Could somebody help me please ?Does anyone know how to change the color depth of a image ???
Jpeg's and probably most tiff images are 8-bit. With CS2, Image %26gt; Mode and you can select 16-bit but you probably will not see any difference.



You can change the ppi (dpi) by menu Image %26gt; Resize %26gt; Resize Image. Uncheck the ';resample'; box. Now you can change the ';resolution'; to 300 ppi. Depending on the image size you may be able to print it or it might look terrible. If you want or need to, go back to the Image Resize, check the resample, and in the top part of the dialog window, change pixels to percent. Make sure the constrain proportions is checked. and enter 110 for the percent. Keep upsizing in this fashion until you get to the size you need.



Remember, the size you need in pixels is 240-300 times the size in inches that you want to print. 4 x 6 therefor 1200 x 1800 at 300 ppi.Does anyone know how to change the color depth of a image ???
Once a color has been downgraded from a higher dpi - 200 to a lower resolution - 72 dpi - it's impossible to take it back up. Sort of like converting color to b/w. Unless you save a copy, you can't go back.



I psp to covert it down, go to image%26gt;decrease color depth. I forget the command on Photoshop but look for something similar.
I don't know about photoshop, but in paint shop pro, on the top of the page, click on Image, then click on Increase Color Depth. Once there, choose the highest setting. I'm sure that things are pretty similar in photoshop.