# Matchbox to add lens distortion

**URL:** <https://forum.logik.tv/t/matchbox-to-add-lens-distortion/6933>\
**Category:** Flame Questions\
**Tags:** batch\
**Created:** [October 14, 2022, 10:33am UTC](https://forum.logik.tv/t/matchbox-to-add-lens-distortion/6933 "2022-10-14T10:33:56Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![johnt](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/johnt/32/14040_2.png) [@johnt](https://forum.logik.tv/u/johnt)\
**Post date:** [October 14, 2022, 10:33am UTC](https://forum.logik.tv/t/matchbox-to-add-lens-distortion/6933/1 "2022-10-14T10:33:56Z")

</div>

Hi All

I found a matchbox the other day which seemed to be able to undistort and distort with only coordinates being entered. I can’t for the life of me remember what it’s called.

Does anyone else recall?

---

<div class="post-metadata">

**Author:** ![richardamckeand](https://avatars.discourse-cdn.com/v4/letter/r/858c86/32.png) [@richardamckeand](https://forum.logik.tv/u/richardamckeand)\
**Post date:** [October 14, 2022, 10:47am UTC](https://forum.logik.tv/t/matchbox-to-add-lens-distortion/6933/2 "2022-10-14T10:47:37Z")

</div>

What does F12 “lens” bring up? Jt lens?

 ![image](https://us1.discourse-cdn.com/flex020/uploads/thedepartmentofexternalservices/original/2X/3/3569a21f4a2e41320d2f6fec53169f024df24b8e.jpeg)

---

<div class="post-metadata">

**Author:** ![johnt](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/johnt/32/14040_2.png) [@johnt](https://forum.logik.tv/u/johnt)\
**Post date:** [October 14, 2022, 10:50am UTC](https://forum.logik.tv/t/matchbox-to-add-lens-distortion/6933/3 "2022-10-14T10:50:16Z")

</div>

Don’t think it’s that one - it’s similar but from memory it had x,y,z coordinates

---

<div class="post-metadata">

**Author:** ![lewis](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/lewis/32/220_2.png) [@lewis](https://forum.logik.tv/u/lewis)\
**Post date:** [October 14, 2022, 2:17pm UTC](https://forum.logik.tv/t/matchbox-to-add-lens-distortion/6933/4 "2022-10-14T14:17:30Z")

</div>

Could be this one which has a simple lens distortion model with a/b/c parameters: [Shader: Reframe](https://logik-matchbook.org/shader/Reframe)

Or maybe one of the shaders that 3D Equalizer exports, like this? [3DEqualizer4 [featurette] - Release 6 beta 1: What's New - YouTube](https://www.youtube.com/watch?v=AE3brvQ-fGU&t=2426s)

---

<div class="post-metadata">

**Author:** ![johnt](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.logik.tv/johnt/32/14040_2.png) [@johnt](https://forum.logik.tv/u/johnt)\
**Post date:** [October 14, 2022, 4:11pm UTC](https://forum.logik.tv/t/matchbox-to-add-lens-distortion/6933/5 "2022-10-14T16:11:22Z")

</div>

Yes - it was reframe