# Polygon transparency changes as you zoom? (how to turn off)

**URL:** <https://community.cesium.com/t/polygon-transparency-changes-as-you-zoom-how-to-turn-off/761>\
**Category:** CesiumJS\
**Created:** [October 3, 2013, 10:07pm UTC](https://community.cesium.com/t/polygon-transparency-changes-as-you-zoom-how-to-turn-off/761 "2013-10-03T22:07:18Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Matthew\_Gwynne](https://avatars.discourse-cdn.com/v4/letter/m/53a042/32.png) [@Matthew\_Gwynne](https://community.cesium.com/u/Matthew_Gwynne)\
**Post date:** [October 3, 2013, 10:07pm UTC](https://community.cesium.com/t/polygon-transparency-changes-as-you-zoom-how-to-turn-off/761/1 "2013-10-03T22:07:18Z")

</div>

I am trying to render some simple polygons on the surface of the globe in the 3 different perspectives (2D, 2.5D and 3D sphere). However, when rendering in the 2.5D perspective, the polygons do not at first appear and only "start" to appear as I zoom into the globe (see e.g., [http://cesium.agi.com/Cesium/Apps/Sandcastle/index.html?src=Circles%20and%20Ellipses.html](http://cesium.agi.com/Cesium/Apps/Sandcastle/index.html?src=Circles%20and%20Ellipses.html) with the 2.5D view and zoom in and out on the circles)

Is there some way to change it so that the polygons are visible at all zoom levels?

---

<div class="post-metadata">

**Author:** ![patrick](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/patrick/32/2045_2.png) [@patrick](https://community.cesium.com/u/patrick)\
**Post date:** [October 3, 2013, 11:39pm UTC](https://community.cesium.com/t/polygon-transparency-changes-as-you-zoom-how-to-turn-off/761/2 "2013-10-03T23:39:54Z")

</div>

This is a known issue, see [#92](https://github.com/AnalyticalGraphicsInc/cesium/issues/592). We could help you hack out the lighting in the meantime, but it will only be a temporary fix until we are able to do the real one.

Patrick