everytime I apply the sharpen tweak to an image in picasa it doesn't stick when printed (though all the other adjustments seem to). Yes I know I should use USM in photoshop, but that requires me ...

How to sharpen an image in Photoshop 1. Open Photoshop and load the image you want to sharpen onto the canvas. 2. Open "Filter," located in the main toolbar at the top of the application. 3.