---
title: Lens
---
<div style={{ textAlign: "center" }}>
<Asset location="exposure:lens" width={350} title="10mm focal length" style={{ textAlign: "center" }}/>
*Example of custom lens that allows zooming as wide as 10mm*
</div>

### Lenses change focal range (zoom boundaries).
- Default focal range (without a lens) is 18-55
- **Spyglass** changes focal length to 55-200

<div style={{ display: 'inline-block', margin: '2px' }}>
    <div style={{ display: 'flex', alignItems: 'top', backgroundColor: '#21252b', borderRadius: '6px', padding: '8px 12px' }}>
      <InfoIcon style={{ color: '#63b3eb', marginRight: '8px' }} width={20} />
      <span style={{ color: '#63b3eb', fontSize: '15px' }}>You can define [Custom Lenses](../../datapacks/custom_lenses)</span>
    </div>
</div><br/>