Open Filter->Blur->Lens Blur. A new window with the Lens Blur tool will pop up. To use the z-depth layer you created, change Depth Map Source to Layer Mask.Click to see full answer. Also to know is, what is Z depth?The Z-Depth Render Element is a grayscale image that renders each pixel based on its distance from the camera in the view. It provides information about each object’s distance from the camera in the current view.Likewise, how do you make a bump map texture in Photoshop? Bump maps are really easy to create using Photoshop’s 3D filters. Go to Filter > 3D > Generate Bump Map. This will bring up the Generate Bump Map dialog box which gives you an interactive 3D preview, with controls on how to generate the grayscale image that will make up your Bump map. Likewise, what is depth pass? Z-Depth Pass is a very old technique that is used in the composting of 3D computer graphics. Basically, it lets you render 3D scenes without depth of field blur, and then add depth of field as part of post-processing.