Unreal Engine 5.4 Lumen vs Path Tracing 

Lumen really gettin there Unreal Engine 5 JSFILMZ Mega Bundle Sale Link: www.artstation.com/a/36209881

Something if you do this kind of comparison again you could do is overlay the images with a difference blending layer on. Seeing exact difference not seen by the naked eye can be telling.

I think it is not a good test. the scene clearly in both looks almost the same because it is not a scene that depends much on light bounces or materials, but lumen in glass or sss or trees and global illumination (it is pretty bad, if not more to say very bad) only serves for video games. the result is not realistic. but patchtracing is way ahead in everything. that's my humble opinion.

same lumen hardware best option , but the render time is really really good

Why the F would you blur the beginning of each scene, we can't see the difference.

Sadly, it looks like Pathtracing is not worth the compute overhead.

Apart from the RTX 4090, what are the RAM, CPU specs that yielded those render times?

where it gone raytracing ? reflection

why you don't set max reflection bounces bigger number ?

Getting that quality at that speed is INSANE

why cant we use displacement in pt?

What happened with the Ray reconstruction we saw in the demo?

Good news! I love Lumen for its speed. However, I find that even Unreal Engine's path tracer is not as sophisticated and lacks many details compared to higher-end path tracers like Octane or Indigo, but it is really really really fast.

Can you make a comparison with NVIDIA Omniverse? Is it still worth using Nvidia omniverse?

take it to Blender and render in Cycle. Cycle X with some tweak is much faster than Epic Path Tracing and of course with great quality. I really like UE for Lumen only. Otherwise I would love to render it Blender Cycle.

The scenes you chose are very bad comparisons. You praise the scenes that give results similar to Lumen and PT, but lumen does not give as good results as expected.

sorry but no one noticed the shadow in the stairs or the ambient occlusion?

Awesome video, although I think you're having issues with the screen tracing because it's picking up objects that lumen isn't (hint why some objects are missing in the lumen only scene). Look at the lumen view, and you'll be able to find the issue there; which you possibly have tried already, which would mean it's an issue with the asset(s).

honestly path tracing only seems to yield a 2% quality increase.... but its 60x slower.

thanks for your time

You could have chosen sth. simpler and more challenging that point out the difference better between the two such as indirect lighting, refractions or caustics in a clean cornel box for example.

Another great video!

reflections in real life are so fk blurry that having perfect reflection, makes it look like a video game/cg..... cgi look "no bueno"

No need for garbage path tracing its sacrificing the native resolution fps anyway greedia fail in my opion overpaying us with the so called tech

almost no diffrence - looks like path tracing is kinda useless vs lumen now, dammmmm :D