Printing via Photoshop
To get the best photographic prints, you have to do more than simply press Print and wait for the image to roll out of the printer. You must specify the right settings both in Photoshop and in your printer—and there's more than one approach to getting the best results.
Soft proofing in Photoshop uses a custom profile to display an onscreen simulation of what the image will look like when printed with a specific printer, ink, and paper combination.
To preview your image using a specific profile, we recommend that you first duplicate the image by selecting Image > Duplicate so that you can use the original as a reference point when fine-tuning the image. Then select the original image, and choose View > Proof ...