---
title: DataScannerViewController.QualityLevel.fast
framework: visionkit
role: symbol
role_heading: Case
path: visionkit/datascannerviewcontroller/qualitylevel-swift.enum/fast
---

# DataScannerViewController.QualityLevel.fast

A quality level that prioritizes recognition speed over accuracy.

## Declaration

```swift
case fast
```

## Mentioned in

Scanning data with the camera

## Discussion

Discussion This quality level may fail to recognize smaller text and barcodes.

## See Also

### Identifying quality levels

- [DataScannerViewController.QualityLevel.balanced](visionkit/datascannerviewcontroller/qualitylevel-swift.enum/balanced.md)
- [DataScannerViewController.QualityLevel.accurate](visionkit/datascannerviewcontroller/qualitylevel-swift.enum/accurate.md)