<b>What is the Lens Barrel Factor?</b>
<br>
It is defined to fix the barrel factor which is caused by a DLP projector lens.<br><br>
<img src="https://www.nanodlp.com/help/distortion-1.png" style="max-width: 100%"><br><br>
<b>What is/are the reason(s) to use it?</b><br>
<p>
By modifying the number, you can fix the lens distortion.<br><br> You can find more about the lens
distortion <a href="https://en.wikipedia.org/wiki/Distortion_(optics)">here</a>.
</p><br>
<img src="https://www.nanodlp.com/help/distortion-2.png" style="max-width: 100%"><br><br>
