How to specify the DPI I want my Canon Pixma TS9020 to print at?

[jackm]

I want to print something at exactly 600 dpi but I can't find the option anywhere to change this. Can anyone help?

[rs-eos]

What is the size of the image you are printing? i.e. whatever will be within any margins?

e.g. say that is 8 inches by 10 inches.  So your source image can then be 4800 x 6000 pixels which would then be exactly 600 dpi for that 8 by 10 print.

[ebiggs1]

You change that on the photo editor. Not the camera or printer. You can d/l DPP4 free from Canon or like me you can get Photoshop.