# Troubleshooting cameras

> Solve common issues with cameras, such as flickering lights and shadows.

Solve common issues with cameras, such as flickering lights and shadows.

## Reduce flickering

### Symptoms

Objects, lights, and shadows flicker if they're far away.

### Cause

The flickering occurs because distances are too large to calculate positions precisely with floating point math. In each frame, the object, light, or shadow is at a slightly different position, so it moves in and out of the view frustum.

### Resolution

To minimize flickering, use one of the following approaches:

* Reduce the far clipping plane distance in the Camera Inspector window to avoid the distance of objects becoming too large for precise calculations.
* Make everything in your scene smaller, to reduce distances across your whole scene.
* Enable camera-relative culling, so Unity uses the camera position as the relative position for shadow calculations. For more information, refer to [Culling settings in Graphics settings](/engine/6000.7/manual/unity-editor/editor-settings-reference/comp-manager-group/class-graphics-settings.md#culling-settings).

## Reduce tearing

### Symptoms

A 'tear' across the screen, where the top and bottom halves don't match up.


**Simulated example of tearing. The shift in the picture is visible in the magnified portion.:**
![](/api/media?file=/engine/6000.7/media/images/Tearing.jpg)

### Cause

Updates in Unity aren't synchronized with updates of the display device, so Unity might send a new frame while the display device is still rendering the previous frame. This results in a visible 'tear' at the position the frame changes.

### Resolution

To reduce tearing, go to **Edit** > Editor > **Quality**, then set **VSync Count** to one of the following:

* **Every V Blank** to send frames only during the periods when the display device isn't updating, which is called its vertical blank.
* **Every Second V Blanks** to send frames during every other vertical blank. Use this value if your project takes longer than one update of the display device to render a frame.

## Additional resources

* [Quality settings](/engine/6000.7/manual/unity-editor/editor-settings-reference/comp-manager-group/class-quality-settings.md)
* [Camera Inspector windows reference for URP](/engine/6000.7/manual/cameras/urp/camera-components-reference.md)
* [Camera Inspector window reference for the Built-In Render Pipeline](/engine/6000.7/manual/cameras/birp/class-camera.md)