# HDRI sunlight causes unusual render results

**URL:** <https://forums.chaos.com/t/hdri-sunlight-causes-unusual-render-results/159532>\
**Category:** Issues\
**Created:** [April 6, 2025, 3:44pm UTC](https://forums.chaos.com/t/hdri-sunlight-causes-unusual-render-results/159532 "2025-04-06T15:44:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mrww8888](https://avatars.discourse-cdn.com/v4/letter/m/3d9bf3/32.png) [@mrww8888](https://forums.chaos.com/u/mrww8888)\
**Post date:** [April 6, 2025, 3:44pm UTC](https://forums.chaos.com/t/hdri-sunlight-causes-unusual-render-results/159532/1 "2025-04-06T15:44:00Z")

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When using HDRI for key lighting, sunlight doesn’t work well with reflect glossiness.  
Software version is 12.1

Render image is here → [https://drive.google.com/file/d/12albta9L37br6NgDlNyh3CV7cItk704A/view](https://drive.google.com/file/d/12albta9L37br6NgDlNyh3CV7cItk704A/view)

Source Max File(2022) is here → [https://drive.google.com/file/d/1gJXxRrNykQrWviab0hBcF7Pp-f2ifJxi/view?usp=drive\_link](https://drive.google.com/file/d/1gJXxRrNykQrWviab0hBcF7Pp-f2ifJxi/view?usp=drive_link)

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**Author:** ![romullus](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/romullus/32/271095_2.png) [@romullus](https://forums.chaos.com/u/romullus)\
**Post date:** [April 6, 2025, 6:33pm UTC](https://forums.chaos.com/t/hdri-sunlight-causes-unusual-render-results/159532/2 "2025-04-06T18:33:56Z")

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I think it’s so called black highlights issue, a well known limitation of Corona light transport. You can read about it and possibly find workaround in this article: [https://support.chaos.com/hc/en-us/articles/4528311915025-Known-bugs-and-limitations](https://support.chaos.com/hc/en-us/articles/4528311915025-Known-bugs-and-limitations)