WIP - MR : Interior viewed from exterior

[Chog Burley]

this is my first post so go easy on me!

 

i am producing images which show the outside of a building, but the interior (reception) is also visible. attached are a couple of test renders. these are not quite there yet!

 

- i am rendering with Metal Ray in Maya using final gather.

 

- so far i have got physical sun and sky set up and the interior lights are just a lambert shader with full diffuse and incandescence.

 

i would like opinions on the best way to go about lighting the interior, both for these daytime shots and for night time shots.

 

- are light emitting surfaces (as above) the way to go or should i use lights? if so, maya lights or MR? area, spot or ambient?

 

- is the blotchiness in the interior from too low a setting in Final Gather Accuracy?

 

- is it naive to expect to get this right in one render? maybe the interior is something that should be done as a separate scene and comped in in photoshop.

 

any other comments or tips welcomed!

 

many thanks,

 

cbcb.

[Justin Hunt]

it depends on how "physically correct" you want to be.

 

If "Totally" is the answer then what you are achieving is close. You could add real lights inside. Although when compared to the intensity of the sun these lights may add very little to the overall lighting.

 

If "I want a pretty picture, who cares about being physically correct" then you have several choices.

 

The easies is to play with the FG fall-off max distance. Small distances = brighter, larger = darker. The FG lighting really penetrates deep into the deep spaces.

 

or you could dial down the suns intencity and up the internal lights.

 

or you could crank up the FG multiplier

 

or comp two renders together.

 

 

jhv

[Chog Burley]

thanks Justin ... very helpful. the the FG fall-off max distance did the trick.