Out of the box, Photoshop is set up for a print workflow. This is easy to fix for a video or web workflow with a simple preference change. You can set rulers and other tools to measure using pixels by default (which will make designing for the video screen easier).
- Launch Photoshop.
- Press Cmd+K (Mac OS) or Ctrl+K (Windows) to open the Photoshop preferences.
- Click the Units & Rulers preference group.
- Click the Rulers pop-up menu and set it to pixels. Changing to a pixel measurement allows greater accuracy and is more factual for a video workflow. You can now make better judgments when designing for the screen.