Unreal Engine 5 - Using Lumen with real world light and camera values

In this tutorial we will take closer look in overall values of the Sun and Sky, as well as how they affect camera and some pros and cons on using it! Shot out to Angelo Feretti who made this scene originally for Corona and Cinema 4D you can buy it on his Gumroad: gumroad.com/an...
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[@robertprescott9577]

Great tutorial. I will definitely be using that process to light interior scenes. Please make more!!!!!

[@StudioHeisenberg]

Glad it is helpfull! Good luck with the work!

[@Claw94]

@@StudioHeisenberg you didnt make any other videos :/

[@MrANavarra75]

It's really what I was looking for! I always crancked up the directional over 100k lux but in this way all other small lights set in candelas were overhelmed, so working in manual mode was absolutely useless... thankyou!

[@StudioHeisenberg]

Great to hear that this helped you!

[@peterallely5417]

Thanks! I had settled on this same method after a lot of frustration, so it’s nice to see someone else doing the same! Hope to see some new content from your channel mate! This is great!

[@OfficialCloverPie]

would love to see some tips or tutorials on how to make the interior (day) lighting look more movie/cinematic..., and how to adjust camera and post process and compositing..

[@StudioHeisenberg]

Thanks for the recommendation, would use it as a guideline for future videos for sure!

[@OfficialCloverPie]

@@StudioHeisenberg excited to see!

[@CRV3N]

When I add the sunsky, the directional Light intensity is set to 750 000lux at default Edit. I dont know if i originally made a mistake or if its since UE5 is now in early access, but I see the sun is by default 75000lux

[@ChristopherZoog]

Great video! Looks really realistic. Regarding the skylighting bug, Just a guess here, but it looks like lumen is falling back on the screen space effects when looking in that corner. Each wall should be a separate mesh to fix that. Take a look at the "lumen scene" debug view, if the walls in that corner are black, then there is an issue with the lumen proxy mesh. Breaking the walls into sperate meshes may help.

[@StudioHeisenberg]

Thanks! All walls are indeed separate meshes, not sure if the the molding could cause it, or further separation of floor in half or something similar would help. I will look further into it for future scenes. Cheers

[@zy-blade]

My guess is, it's about light attenuation. If you turn away and you are NOT in the actual range of the light attenuation radius (point light for example), it turns black because the default light culling still needs to be reworked. edit: of course this doesn't apply to directional lights. But I could fix some sort of this issue by raising the attenuation radius on my point light.

[@zy-blade]

Ah, and for the spotlight, raising the outer angle and keeping the player that way inside the attenuation range, of course, also helps with that. It should increase performance hit but I don't care for now^^ I want some really nice interior lighting without lighting hitches. Once this is fixed from epic, archviz is gonna explode :D

[@cathychoi6959]

really appreciated your well performed tutorial!

[@StudioHeisenberg]

Thanks!

[@BarryLester]

Sorry for nitpicking, but the problem is that you have a physical value for the sun's illuminance, but the luminance value of the skylight is not calibrated to that. I mean the sun has about 65k lux when it's at about 10am or 1pm on a partially cloudy day, and you need to adjust the intensity of skylight, so the sky has a luminance value of 5-7kcd/m2. Your camera setting is spot on for an interior scene. setting the camera at 1/100, f/4, ISO 800 is the same as enabling auto exposure and has the min max ev100 locked at 7.67, which is enough for an interior shot.

[@StudioHeisenberg]

Hey, totally agree, the problem was that with beta version sky was buggy and there was not much to do with it, but for new versions of Unreal this makes lot of sense. Thanks!

[@nickkaverin]

THANK YOU!

[@alxleiva]

Hey, regarding the indirect lighting intensity of the Sunsky, I can confirm it does work but it's out of scale because of those high values of the sun. If you set the intensity to something like 10000 you'll see how it increases a little bit the GI. I'd say Lumen wasn't developed with physical based units in mind and that's find, they can fix it easily.

[@robertprescott9577]

Cant wait for the tutorial on this, lighting is so difficult for me. Grrrr

[@marshal487]

Very Nice , Thank You😊❤️

[@StudioHeisenberg]

You are welcome!

[@VisEngineLimited]

Great job!

[@StudioHeisenberg]

Thanks!

[@kaizendigital_id]

where do you get SunSky actor? is it BP that you made yourself?

[@StudioHeisenberg]

No, you can turn it on in plugins if it is not visible to you.

[@sadekdhaoui9381]

i like this tuto

[@natureantilles.6280]

thx bro with your tuto ! it's a great job ! and for outdoor lighting ?

[@StudioHeisenberg]

Hey, planning one soon, keep an eye here :)

[@majidovgokdal2439]

Nice video thanks for explainations, I always have a problem in ue after baking some objects turning darker I tried to increase GI samples quality and many other tricks bit no luck, do you have any solution for this ?

[@StudioHeisenberg]

Hi, thanks! If you bake try to increase lightmaps resution, and make sure to have proper uv maps.

[@majidovgokdal2439]

@@StudioHeisenberg Thank you so much

[@user-ny8wh4zc2d]

What causes the reflection to have a noisy flicker

[@StudioHeisenberg]

this was done with beta version of UE5, it is resolved since than in official build

[@I_Never_Lie]

Beautiful work! I'm just wondering how much Vram did this scene (or overall for architectural projects) consume? I'm not sure if 8Gb from my 3060Ti will be enough. Thanks!

[@StudioHeisenberg]

Hey, thanks! It will be enough, just make sure to turn on Nanite for high poly stuff, and dont overuse huge textures that are not visible from close up. But even without that much optimisation this scene for example will run without any problems on 8gb

[@I_Never_Lie]

@@StudioHeisenberg Thank you for so fast response! Yes but I'm unsure if I go with a heavier scene, would it still be enough...

[@StudioHeisenberg]

@@I_Never_Lie for sure you will have to do some optimization work on heavy scenes, but same apply to 16gb 3080, if you just trow in everything without optimization you will reach the limit. But nanite works great for geometry for sure so I wouldn't be worry much

[@I_Never_Lie]

@@StudioHeisenberg You are right! I'll give it a try. Thanks! Please keep up your goodwork. Subbed

[@bruno_madalozzo]

​@@I_Never_Lie ​@Dynamite Black hey sir, I would like to know if you had any trouble with the 3060 ti and how much vram does it consumes. I bought a 3060 non ti and it does well with my small scenes till now. With the proper optimization it works great in cinematic view, but sometimes get to 11gb vram usage. From 28°C to about 58°C.

[@bernhard.design]

Did you figure out how to use the AO inside the PPV?

[@StudioHeisenberg]

Haven't tried that

[@carloseperezortiz]

How did you achieved the sun hitting the painting without burning the colors of the painting? In your animation at the beginning the colors of the painting looks great without burn. I'm having this problem with Lumen if leave the dir light intensity as default. Thank you!!

[@StudioHeisenberg]

Hey, I have set exposure to manual in postproces and than play with Iso on camera untill you get proper exposure. Add also just little bit of bloom.

[@robertprescott9577]

Any advice on how to light a completely close area, like a TV studio? I am working on a virtual set on and struggling to create realistic lighting.

[@StudioHeisenberg]

I will cover in near future interior with only artificial lighting.

[@chrisnguyen6385]

Hello Sir, I am using ue5.0.3 but I can't find the sun sky at plugin, could you tell it details?

[@StudioHeisenberg]

It should be automatically available. Do you have it when you go to add tab, under the lights category there should be sun and sky?

[@ArikiSun]

5:05 i cant see sunsky in unreal 5.2 can you direct me ?

[@StudioHeisenberg]

Hey, make sure you enable it in plugins if needed and it will be under lights after that.

[@AlexReimann-fw2hl]

how did you get this "sun and sky" light, I do not see it in my project

[@StudioHeisenberg]

If it is not on by default you can turn it on i plug-ins

[@AlexReimann-fw2hl]

@@StudioHeisenberg thank you I have done it, thanks for the help! (:

[@peterallely5417]

Hey friend, I have my scene set up the same as yours (as far as I can tell) and added the ‘HDRI Backdrop’ plugin but now the sounding environment is black apart from the ground (you can see the HDRI’s ground but as soon as it starts to wrap and go ‘vertical’ it fades to black upper hemisphere). Any ideas? Thanks for your time.

[@StudioHeisenberg]

Hey, thanks for kind words! Hm, it is hard to tell without looking into the scene but maybe the HDRI Backdrop is to big or to small?

[@FMFvideos]

If I buy a scene from Angelo, can I just import it to Unreal? Do I have to apply materials and change too many things, or is it mostly ready to render?

[@StudioHeisenberg]

Its 20% percent ready, and 80% work to do in Unreal...

[@FMFvideos]

@@StudioHeisenberg wow no thank you

[@StudioHeisenberg]

@@FMFvideos after learning curve it pays of :)

[@mr.moulounda8386]

Hi, i’m not abel to make a good realistic rendering. Whit my ue5 can you make a video tutorial?

[@marcomanunta4121]

Dude, why the frame rate of the animation at the beginning is so slow ?

[@StudioHeisenberg]

Hi, the frame rate is 24, I prefer it for more cinematic look.

[@sadekdhaoui9381]

new subscribe

[@sebastianbarra4505]

where do you get the sunsky from?

[@StudioHeisenberg]

Hey, if you don't see it you probably need to enable it in plugins.

[@itzshft]

What's the intro song?

[@StudioHeisenberg]

Orpington Buff on Epidemic Sound

[@itzshft]

@@StudioHeisenberg Thanks! Good video as well.

[@StudioHeisenberg]

@@itzshft glad to hear that! Cheers

[@NBCNothingButCrap]

Is this method recommended for exterior scene?

[@StudioHeisenberg]

Exterior scenes would be much easier to get since there are not many global illuminations and dark corners needed, yet, the principle is the same.

[@olusegunkolade9029]

How did you add the sunsky in unreal

[@StudioHeisenberg]

If it is not in lights, go to plugins and activate sunsky plugin, restart Unreal and it should be there.

[@olusegunkolade9029]

@@StudioHeisenberg thanks man i will try it. My interior scenes wer looking very dark

[@daddyfox7078]

hello i cant find sunsky can you help me please

[@StudioHeisenberg]

It's under the lights category

[@daddyfox7078]

@@StudioHeisenberg okay but there is nothing , only direction light ,point light spot,rect and skylight

[@StudioHeisenberg]

If you are using older version, you will need to enable it first in plugins.

[@AVISIONMUSICTV]

That weird behavior you encounter in the corner is your auto exposure going crazy lol. You're not supposed to use auto exposure with lumen

[@StudioHeisenberg]

Autoexposure is off here. Since this is done with the first version of UE 5 it is the bug later resolved.

[@Inquirro]

Can't you see those ugly blurry dark stripes on the walls? Can't they be removed?

[@StudioHeisenberg]

Hey, this was done with beta version, so at that moment Lumen wasn't really that good with lots of splotches and bugs, now there is much more control and quality, I might revisit this scene ;)

[@vladsir8613]

99.9 % real time Light

[@SuperlativeCG]

Nothing even comes close.