Hotel lobby renders

[prateekvishwa]

Just finished a lobby project. critics & comments are welcome

[pixela]

Hi Prateek,
Some objects seems out of scale to me. But my eyes may be fooled by the high ceilings.

[3DMK]

I think the Lighting looks a bit off as there doesn't seem to be much light coming in from outside.
With such big windows you would have a lot more sky-light coming in, rather than how it is at the moment
Do you have a Vray-dome light or VraySun in the scene at all??
Hope this Helps
Cheers
Jamie

[prateekvishwa]

thanks for you feedback!
Pixela: all object are as per scale. may be coz of FOV..

3DMK: hey yes u are right.. recently while playing with intensities i have noticed some interesting lighting behavior.. i am trying to crack balance between internal & external light intensity while working with sun or dome for external environment. In these renders i have used dome light with HDRI. I always get stumped when i try to lit scene only with exterior light source as light doent penetrate till the end.
I really liked this image -- http://www.archdaily.com/58123/van-l...cts/file007-8/ & trying to figure out this balance btwn external & internal lighting..

[Morne]

Maybe your glass is not letting the light through?

[prateekvishwa]

Maybe your glass is not letting the light through?

Glass thickness is 1" and affect alpha, shadows all on. i get the exterior lighting effect ok if i reduce my ies lights intensity currently it is 3000X ! but in that case i find it difficult to illuminate scene well.. while playing with camera either area around windows get over exposed or interior corners looks very dark.. in my free time i am doing more & more R&D in those areas only...

[Morne]

render 2 scenes then just comp them in post.
Expose your interior like you want and render. Expose your exterior like you want and render. Then overlay them in photoshop masking out the windows. Now you can expose inside and outside seperately untill you get what you want.

OR, do it like photographers do it. Expose so outside looks ok(ish). Use real world light values for your ies lights where the actual fittings are. Then use couple of extra fill lights to simulate "camera flash" to brighten up your inside.

[deflix]

Hey Prateek!

Comping is an option as Morne says, although Id be inclined to render the scene with daylight and v low int lights and then comp the interior light intensity via lightselect elements instead. Remember to set the element multipliers to low values so you have more to play with in pshop.

In terms of scene setup I can say a few things:

I don't recommend using IES lights unless absolutely necessary for penumbras - I often use simple Vraylights (planes) as keys and fillers, rather than create every individual light in the correct physical place, as it provides more control and freedom.

I would suggest trying the following with a mid grey mat override, and hide your glass:

Turn off all your lights except the env and set your camera exposure to 60. Adjust the Dome/HDRI multiplier until the BG is just getting blown out. Once you're happy with this turn on your interior lights and adjust the intensity until they just start showing . Finally increase the saturation of your lights to bring some depth into the Gi solution. This last step is probably the most important and will create the impression in your reference image. People commonly under-saturate lights; they should be quite a pronounced yellowy orange for the interior lights and a blue/cyan for the dome.

It is fine for the exterior to be 'blown' out somewhat, especially if you don't have a bg in there

Good Luck!

[prateekvishwa]

render 2 scenes then just comp them in post.
Expose your interior like you want and render. Expose your exterior like you want and render. Then overlay them in photoshop masking out the windows. Now you can expose inside and outside seperately untill you get what you want.

OR, do it like photographers do it. Expose so outside looks ok(ish). Use real world light values for your ies lights where the actual fittings are. Then use couple of extra fill lights to simulate "camera flash" to brighten up your inside.

tnx for the tip! it is good to compose in photoshop but to be honest it is practically difficult to render same image twice because most of the projects i get to work on are on fire. For this project i rendered 4 images. This project was a 2 day job for 1st draft & one extra day for updating feedback. I must learn to get the base image physically correct.. may be camera related.. I always wonder wht is more important.. understanding of photography for better control on camera or understanding on interior designing for better placement of lights & energy...

[prateekvishwa]

Hey Prateek!

Comping is an option as Morne says, although Id be inclined to render the scene with daylight and v low int lights and then comp the interior light intensity via lightselect elements instead. Remember to set the element multipliers to low values so you have more to play with in pshop.

In terms of scene setup I can say a few things:

I don't recommend using IES lights unless absolutely necessary for penumbras - I often use simple Vraylights (planes) as keys and fillers, rather than create every individual light in the correct physical place, as it provides more control and freedom.

I would suggest trying the following with a mid grey mat override, and hide your glass:

Turn off all your lights except the env and set your camera exposure to 60. Adjust the Dome/HDRI multiplier until the BG is just getting blown out. Once you're happy with this turn on your interior lights and adjust the intensity until they just start showing . Finally increase the saturation of your lights to bring some depth into the Gi solution. This last step is probably the most important and will create the impression in your reference image. People commonly under-saturate lights; they should be quite a pronounced yellowy orange for the interior lights and a blue/cyan for the dome.

It is fine for the exterior to be 'blown' out somewhat, especially if you don't have a bg in there

Good Luck!

yeah! i was thinking on similar lines.. but i loose my patience when i look at clock i generally place lights at physical place but to get the effect i need to boost them a lot that they no longer remain physically accurate ( as Morne suggested above i.e. real world light values) I am sure there must be some study rather thn just hit & try method which i am following right now..

[prateekvishwa]

attached is screen of my light placement..

[Morne]

At most for this scene you need 2 or 3 fill lights (just to brighten up the darker areas where normal "correct" lights dont get enough light.
For these "fill lights" just use a vray plane light and make them about 1.5 meter X 1.5 meter or so. Use the physical correct lights with real values. Now just cheat the fill lights by messing with the multiplier and colour a bit. Dont make the multipliers so high that your interior start looking brighter than exterior.

[3DMK]

attached is screen of my light placement..

I noticed that you are using the Default [Image] values for your lights. I find that it is really difficult to get a quick & appropriate lighting setup using this way, especially when your lights will change power if you change the size [with vray-lights].
I would suggest starting to use Luminous Power option as this will produce the same amount of light, regardless of changing the light size. It is also easier to understand as this is how most real-world lights are measured. IES lights only give you Colour temperature or Luminous power options so if you make your Vray lights as default [image] then you have no idea as to their brightness relationship.
Like most people said---get your sky-light in & looking good first...then adjust your inside lights to find a nice balance.

I also feel it's far more important to understand the lights rather than the camera, as no amount of camera knowledge will get you anything good if the lighting is not done properly.

Hope this helps

[prateekvishwa]

I noticed that you are using the Default [Image] values for your lights. I find that it is really difficult to get a quick & appropriate lighting setup using this way, especially when your lights will change power if you change the size [with vray-lights].
I would suggest starting to use Luminous Power option as this will produce the same amount of light, regardless of changing the light size. It is also easier to understand as this is how most real-world lights are measured. IES lights only give you Colour temperature or Luminous power options so if you make your Vray lights as default [image] then you have no idea as to their brightness relationship.
Like most people said---get your sky-light in & looking good first...then adjust your inside lights to find a nice balance.

I also feel it's far more important to understand the lights rather than the camera, as no amount of camera knowledge will get you anything good if the lighting is not done properly.

Hope this helps

ahh i never explored this! will start new setup with this approach. tnx a lot for this tip 3DMK!

[prateekvishwa]

Dont make the multipliers so high that your interior start looking brighter than exterior.

yep.. i never noticed that my image is brighter inside thn outside unless i started this thread here.. which is actually an eye sore... well now this is what happened when u glued to pc on one prj for more thn 11-12 hours continuously.. i must take care of this which is infact a basic. will post revised image soon. tnx Morne!