---
title: "Camera"
canonical: "https://documentation.chaos.com/space/VRAYUNREAL/116558192/Camera"
format: markdown
---
> ❌ The exposure and color corrections do not work as a global PostProcess volume and are individual per camera. To see the changes you make to the **VRayPhysicalCamera'**s settings in the viewport you have to look through the camera itself.
> ❌ 
> ❌ 
> ❌ ![QS_6.3ViewportType.jpg](media://25e4b7ee-292b-4364-bc11-43936883ba0b)

> ✅ You can use Unreal's PostProcess effects in the **Color Grading**, **Film**, **Lens** categories such as Bloom, Lens Flares, Chromatic Aberations , etc. to modify the feel and look of the camera shot.   
> ✅ Please note that Unreal's tonemapper and PostProcess effects set in the camera will **only** affect the scene when looking through the **Unreal's Camera **or** CineCamera **actor**. **To enable Unreal's tonemapper and PostProcess effects while looking through the **VRayPhysicalCamera**, **Enable Exposure** in the V-Ray Physical Camera Settings must be disabled and [Enable Viewport Rendering ](https://docs.chaosgroup.com/display/VRAYUNREAL/V-Ray+Settings#V-RaySettings-Common)is enabled.   
> ✅ Unreal's tonemapper and PostProcess effects will not be rendered if you use the VFB.


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### **Aperture F-number vs Shutter Speed vs ISO**

**Cheat Sheet**


The main options that control the brightness of a V-Ray Physical camera are Aperture F-number, Shutter Speed and ISO. They affect each other and you need  to balance them according to your scene. Keep in mind that these settings do not correspond to those of a real-life camera. They apply only to the V-Ray Physical camera.

- F-number determines the size of the opening in the camera lens. What the number refers to is the ratio between the aperture's focal length and the actual diameter of the aperture. A smaller F-number means a larger aperture. The larger the Aperture, the brighter the scene becomes but that also introduces more Depth of field.
- Shutter Speed determines how long the lens stays open when taking the photo. The numbers refer to fractions of a second. The slower the Shutter Speed, the brighter the scene becomes but that also introduces Motion Blur.
- ISO determines the camera's sensitivity to light in the scene. Lowering the ISO means that more light is needed to achieve good lighting. Increasing the ISO means that less light is needed to achieve good lighting.

![image](media://384f3b6d-7172-41b8-9cdc-0a83a47a1e84)



## **Examples**

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### **F-number**

(Film Speed(ISO)=100; Shutter Speed=100; White Balance= (1,1,1))



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### **White Balance**

(Film Speed(ISO)=100; Shutter Speed=100; F-number =1.4)