# Magnifier using Three.js and react fiber

**URL:** <https://discourse.threejs.org/t/magnifier-using-three-js-and-react-fiber/76724>\
**Category:** Questions\
**Tags:** post-processing\
**Created:** [January 19, 2025, 6:04am UTC](https://discourse.threejs.org/t/magnifier-using-three-js-and-react-fiber/76724 "2025-01-19T06:04:49Z")\
**Posts on this page:** 1\
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**Author:** ![manthrax](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/manthrax/32/2596_2.png) [@manthrax](https://discourse.threejs.org/u/manthrax)\
**Post date:** [January 19, 2025, 8:43am UTC](https://discourse.threejs.org/t/magnifier-using-three-js-and-react-fiber/76724/2 "2025-01-19T08:43:39Z")

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I made a magnifying lens with meshphysicalmaterial before. Iirc it just worked out of the box if you set the thickness params.

If you need more like… a camera zoom… you can animate the camera.fov followed by camera .updateProjectionMatrix()

edit: oh i see u want r3f… is this [Fisheye camera (tested with Bruno Simons Level1) + code](https://discourse.threejs.org/t/fisheye-camera-tested-with-bruno-simons-level1-code/56787) relevant ?

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