Adding Spot Lights
Photoshop CS6 Tutorial
How to Add a Spot Light in Photoshop
In Photoshop you can add either Infinite, Spot or Point lights. Spot lights are similar to the way that a spot light lights a room. The rays travel from the bulb outward in a single direction in the shape of a cone.
With Point lights and Spot lights you can add Falloff to your light to better simulate a real light. Falloff occurs as the light travels away from the light source. You can see this phenomenon whenever you observe head lamps on a car. The further from the car, the less intense the light.
One thing to remember about lights in Photoshop is that you see the effect of the light (objects illuminated) but you never see the light itself in the rendered image.
In Photoshop open a new blank document (File > New). Set the image size to 1,024 pixels by 1,024 pixels.
Add a new layer to the Layers panel by clicking the Create a New Layer icon.
Choose 3D > New Mesh from Layer > Mesh Preset > Cube Wrap. The object is added to the blank layer and it becomes a 3D layer.
In the 3D panel you can choose to see the Entire Scene, Meshes, Materials or Lights. Click the Lights icon.
Click the Add Light icon at the bottom of the 3D panel and choose New Spot Light.
Click the visibility icon next to the Infinite light to turn the Infinite light off. At this point the only light illuminating the scene is the Spot light.
Click-drag in the view box in the lower left corner of the workspace to frame your scene. Drag the light arrows to reposition the light.
The light's color is changed by clicking the Color rectangle in the Properties panel.
To change the light's intensity, move the Intensity slider or enter a value in the box.
The light's Hot Spot and Cone Angle are also set in the Properties panel.
To change the light's Falloff, select Light Falloff and enter values for the Inner and Outer limits. The Falloff affects the illuminated areas and the object shadows.
You can set a specific light position and angle by selecting the Coordinates icon in the Properties panel. Values can be entered for X, Y and Z Position and Angle.
Once you are finished with you adjustments, reposition the camera by click-dragging in the view box. Render the scene by choosing 3D > Render.
Moving Lights Around
To move and aim lights in the scene, you can select the light and click-drag the arrow and rotation handles. The light's Properties panel also provides buttons that Aim the Light at the Origin and Move the Light to the Current View.
Another way to aim the Spot light at a specific object is to select the light, then Option-click (PC - Alt-click) the new "Look At Point".