# AS3 Alpha Tween "shimmer"

**URL:** https://forum.kirupa.com/t/as3-alpha-tween-shimmer/242834
**Category:** flash
**Created:** [October 30, 2007, 8:51pm UTC](https://forum.kirupa.com/t/as3-alpha-tween-shimmer/242834 "2007-10-30T20:51:42Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![HunterSkookum](https://avatars.discourse-cdn.com/v4/letter/h/65b543/32.png) [@HunterSkookum](https://forum.kirupa.com/u/HunterSkookum)
#### Post date: [October 30, 2007, 8:51pm UTC](https://forum.kirupa.com/t/as3-alpha-tween-shimmer/242834/1 "2007-10-30T20:51:42Z")

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I’ve got a working alpha tween in a 31 fps movie clip that fades from 0 to 1.0 over 2 seconds, black background. The images that fade in seem to “shimmer” as if the alpha blend were computed with a low-quality (high speed?) algorithm. Is this normal, and is there a way to smooth out the tween?

Thanks,

Hunter