# Rectangular light

**URL:** <https://forums.chaos.com/t/rectangular-light/122597>\
**Category:** General\
**Created:** [May 19, 2025, 9:55pm UTC](https://forums.chaos.com/t/rectangular-light/122597 "2025-05-19T21:55:21Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![vaclav\_simecek](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/vaclav_simecek/32/59804_2.png) [@vaclav\_simecek](https://forums.chaos.com/u/vaclav_simecek)\
**Post date:** [May 19, 2025, 9:55pm UTC](https://forums.chaos.com/t/rectangular-light/122597/1 "2025-05-19T21:55:21Z")

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Hi,  
am trying do create interior renders.

I would like to ask, how should I set rectangular lights behind windows to get real results of shining sun during the day? I am based in Europe (Czech republic). Which units and intensity would you recommend me to use?

Thank you.  
Vasek

 ![.png.png](https://europe1.discourse-cdn.com/chaosprd/original/3X/a/0/a0add1e329cd5caeb36f766c8fa7ac716dcfc8bb.png)

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**Author:** ![Micha](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/micha/32/59168_2.png) [@Micha](https://forums.chaos.com/u/Micha)\
**Post date:** [May 20, 2025, 5:16am UTC](https://forums.chaos.com/t/rectangular-light/122597/2 "2025-05-20T05:16:05Z")

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I wouldn’t use rectangular lights and for a more natural look …

[https://forums.chaos.com/forum/v-ray-for-rhino-forums/v-ray-for-rhino-general/1205252-best-way-to-ight?p=1205448#post1205448](https://forums.chaos.com/forum/v-ray-for-rhino-forums/v-ray-for-rhino-general/1205252-best-way-to-ight?p=1205448#post1205448)