Lumion Support Center

Gallery => Featured Projects Gallery => Topic started by: Adam AV on December 03, 2018, 06:18:07 am

Title: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: Adam AV on December 03, 2018, 06:18:07 am
Hi all,

I haven't posted much work lately so I figured I'd share this. This was a small project I recently completed as a test to see how far I could push lighting in Lumion. This scene was creating predominantly to test and refine new texture and modelling assets, but I loved how the results so much I decided to render out a set of images from a bedroom using the same scene. I was pretty happy with the results of this as I haven't seen many people attempt completely "artificial" lighting in a Lumion project (they typically are either day lit or have some sort of exterior lighting). Because of this, I'll be doing a write up of the process where I'll have some of the more interesting showcases that I've created using the scene. If you'd like to see a breakdown on the lighting setup let me know!

Anyway, here is the finished product of the bedroom scene. In short, this whole scene was lit using only 2 spotlights. No windows, area lights, omnilights or anything else! The main focus of this, as well as the other images produced in this scene was to investigate the role of specularity and fresnel in achieving accurate Global Illumination. My favorite image is last on the list, it is a crop of an image that I think gave a nice composition  :)

All in all it was pretty fun project with some good results and I've picked up a few new techniques when it comes to texturing in Lumion. I'm looking forward to sharing some of the texture demo's in the future that really show off the lighting.

C&C's welcome!
Cheers.
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: peters on December 03, 2018, 06:32:23 am
wow Adam. That is excellent lighting. I have to agree.
I would really appreciate seeing the lighting setup and the texturing technique you've adopted here.
Well done

The reality is there will be some windows with outdoor lighting to the scene in many scenarios.
It would be nice to see how this test you have done with just 2 spotlights looks with some additional external light source so there is less contrast between light and shadow. Look forward to seeing more!
Peter
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: Adam AV on December 03, 2018, 08:40:26 am
wow Adam. That is excellent lighting. I have to agree.
I would really appreciate seeing the lighting setup and the texturing technique you've adopted here.
Well done

The reality is there will be some windows with outdoor lighting to the scene in many scenarios.
It would be nice to see how this test you have done with just 2 spotlights looks with some additional external light source so there is less contrast between light and shadow. Look forward to seeing more!
Peter

Thanks Peter! Yep, most of my previous interiors have always used some sort of exterior lighting in conjunction with internal lights.

This test was more of a "what if I.." type of thing, mainly trying to emulate an artificially lit studio. Say to show off a product, or in my case new 3D assets lol. You'll understand my intentions once the rest of the images are up  :-D

That would be interesting, I have a feeling I'll lose some of the GI effects that are happening in the scene once the skylight and cloud lighting starts to play a part. I actually used the skylight as a feature light in the other test scenes, it was completely unintentional at first but I loved the result so ended up tweaking it and using it in my texture tests. If I get some time I might try and implement the same process into a full interior shot to see how it turns out.

Thanks!
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: peters on December 03, 2018, 11:08:16 am
Yeh I find myself using exterior sunlight (realsky, skylight 2) for interiors also,
either via windows or cropping the building behind the camera.
I haven't experimented enough with internal lights and GI, so i'm looking forward
to your further testing when u get the time.
Cheers
Peter


Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: Adam AV on December 04, 2018, 05:34:32 am
Well I'm yet to upgrade to L9 so I havn't even started playing with realsky and skylight 2! I'll no doubt retest these scenes if I take the plunge  :-D

It's very much a trial and error game for GI settings in interiors but the more you use it and rely on the calculated lights the more comfortable you get with knowing how it needs to be tweaked in order to achieve the result you're after.

Less is more when it comes to light intensity, and constantly referring to some source images to study how the light is actually behaving helps, because it's typically not doing what you'd expect when you try to imagine it on your own!
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: peters on December 04, 2018, 10:54:53 am
thanks for the tips :)
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: peterm on December 04, 2018, 10:11:13 pm
...
Less is more when it comes to light intensity, ...
Absolutely.  Probably around 3 or maybe 4 Spotlights for Global Illumination for interiors is enough, along with making sure the amount of Global Illumination is 'minimal'.  Or if need more for larger area variation of light, then make sure the amount of Global Illumination is reduced further.
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: Mann und Schott on December 05, 2018, 12:57:52 pm
Pretty awesome result! I really like it a lot.
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: vertigo1 on December 05, 2018, 03:43:14 pm
This is dangerously close to being indistinguishable from a photograph. Some tweaking on the chair material, and the bed headboard model would push it over the edge.

Good work!
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: Adam AV on December 05, 2018, 11:23:04 pm
Thanks Mann Und Schott!



This is dangerously close to being indistinguishable from a photograph. Some tweaking on the chair material, and the bed headboard model would push it over the edge.

Good work!

Thanks vertigo1 What a compliment!  :-D
Yeah, the geometry in the headboard curve isn't quite segmented/subdivided enough in this scene. This is something I've since fixed!
As for the chair material, any suggestions in particular? or is it the texture itself that's letting it down?
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: vertigo1 on December 06, 2018, 04:11:44 pm
As for the chair material, any suggestions in particular? or is it the texture itself that's letting it down?

Just my opinion but the chair material could do with an ever so slightly softer look. The high sheen on the material makes the faceted edges a little too harsh. Maybe bumping up the weathering/edges and possibly the relief a little would do the trick?

The texture itself is very nice, I think what my eye is looking for is a tiny bit more softness and interaction between the wood grain and the lights in the highlights.

That is me being very nit-picky though, because it is great as is!
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: Adam AV on December 07, 2018, 02:07:21 am
Ah yep, The specularity is a little high along the edges. There's a certain amount of compromise between the glossiness and reflective settings in order to accentuate the gloss mapping properly. In this case, it was tweaked to have the grains be slightly less glossy but I think it may have boosted the reflection a little too much.

That's fine with me! I'm fairly picky as it is but after staring at the same images for hours on end the little details start to disappear on me  :-D

Thanks for the comments!
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: Korhan Erol Mimarlik on December 28, 2018, 10:59:09 am
woooowww
Title: Re: The Closest I've been to Realistic Lighting! - {Studio Lit Bedroom}
Post by: Adam AV on January 09, 2019, 11:17:56 pm
woooowww

Thank you!  :)