---
title: kIOVideoFeatureControlClassIDExposure
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1646200-anonymous/kiovideofeaturecontrolclassidexposure
---

# kIOVideoFeatureControlClassIDExposure

## Declaration

```occ
kIOVideoFeatureControlClassIDExposure = 'xpsr'
```

## Discussion

Discussion A IOVideoFeatureControl that controls a the total amount of light accumulated. The units for the control's absolute value are exposure value (EV).