Open the New dialog box (CTRL + N) from the File menu, select the photo in the preset drop-down list, and then select Landscape in the Size Drop-down list, 8 x 10.
Note: The only problem with presets is that they have a preset resolution of PPI, and the actual print of a photograph does not necessarily require such a high resolution.
Enter the 213 PPI in the resolution input box (enough to print on a high-end printing press), and then click the Save Preset button to open the New Document Preset dialog box.
After entering the appropriate preset name, select the preset parameters that are appropriate for you (generally not necessary, recommended all) Click OK.
The new custom preset size appears in the preset drop-down list.
If you want to remove the preset size, select the preset size to delete and click the Delete Preset button to remove it.
Classification:
- PS Getting Started Tutorial