Trying to cross fade between two photos on two layers

[Stephen98A1]

Must be easy but I can't find it I want to stack two images in different layers Then alter opacity in a manner like the gradient tool does color so that bottom image is completely visible on right of screen and top image is visible on left. Between the sides is a gentle blend of opacity with images being equally visible at 50% opacity each in center of screen in center of screen

[jane-e]

@Stephen98A1 

• Create a layer mask on the top layer
• Set your swatches to the defaults of B&W by pressing "D"
• Select the Gradient tool "G"
• In the options a bar, choose linear gradient with foreground to background for the colors
• Paint a gradient horizontally on the mask — use Shift to keep it straight
  Play with the gradient if you don't like it the first time

Show a screenshot if you need more help.

Jane