# Lumen 5.2, anything new, better or broken?

**URL:** <https://forums.unrealengine.com/t/lumen-5-2-anything-new-better-or-broken/836448>\
**Category:** International\
**Tags:** unreal-engine, Global-Illumination, Lumen\
**Created:** [March 31, 2023, 11:32pm UTC](https://forums.unrealengine.com/t/lumen-5-2-anything-new-better-or-broken/836448 "2023-03-31T23:32:39Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![rsena](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@rsena](https://forums.unrealengine.com/u/rsena)\
**Post date:** [March 31, 2023, 11:32pm UTC](https://forums.unrealengine.com/t/lumen-5-2-anything-new-better-or-broken/836448/1 "2023-03-31T23:32:39Z")

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Is there any clear info on lumen 5.1 vs 5.2 or notes on 5.2 lumen? I can’t find docs on 5.2 to see what the differences are. Mainly, I am unsure if I should upgrade my 5.1 project to 5.2 for lumen improvements…or just stick with 5.1?? Thanks for any info!

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**Author:** ![jblackwell](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@jblackwell](https://forums.unrealengine.com/u/jblackwell)\
**Post date:** [April 2, 2023, 7:25pm UTC](https://forums.unrealengine.com/t/lumen-5-2-anything-new-better-or-broken/836448/2 "2023-04-02T19:25:11Z")

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Apologies if my reply on the lumen feedback thread was insufficient, but as I said there, it really depends on what your content is. SWRT reflections, character lighting, translucent reflections, and several accuracy improvements.

If I had to give a _very_ general remark, if your project is especially reflection-dependant, I would upgrade. Performance, quality, and scalability are all improved. If your project needs high-fidelity characters and can afford the rendering budget, I would upgrade. If you are having any _major_ issues with lumen leaking bugs, I would upgrade. Just bear in mind that, as lumen is still in very active development, there’s no guarantee everything will work the same as it did in 5.1.

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**Author:** ![rsena](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@rsena](https://forums.unrealengine.com/u/rsena)\
**Post date:** [April 6, 2023, 2:15am UTC](https://forums.unrealengine.com/t/lumen-5-2-anything-new-better-or-broken/836448/3 "2023-04-06T02:15:12Z")

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Thanks. Yes, this is for a variety of “shots”, not a game, for film VFX. I guess I will just have to copy an existing scene to 5.2 and do a side by side…wish they had more info on this, especially visual comparisons.