How To: Guides Dividing the Document/Image into Halves, Action
This morning, I was laying out a flyer for my Mom and had a need to see the guides in PS CC dividing the document vertically and horizontally into two, for ease of laying out the text and images in the flyer. The flyer was an odd size so looking at the Rulers, I needed to do some math in my head to set the Guides precisely in the center. Then I realized there is much easier way. Here's how:
Right-click on any of the Rules to set the unit to "Percent". This will automatically set both the horizontal and vertical Rulers to % mode. Then drag guides from the Rulers to 50% and you're done.
Even easier, record an action to do this and say it. Then all you have to do is run the action! 🙂