JamesTaylor

Using the Vray Sun and Sky properly for the 1st time i'm work on an animation where the camera moves from an external location to an internal location and then again to an external view. The final shot moves out from an open living area onto a balcony overlooking the sea and will close by watching the sun set...

My question is regarding being able to light an interior space using the Vray Sun & Sky combined with the physical camera instead of placing area lights over the windows and using standard Cameras... Has anyone used this method or do we still need to supliment the Vray Sun & Sky with extra area lights?

I note that when i use a standard camera internally whilst the Sun & Sky is present i just get a white screen being rendered which i assume is because there is way too much light present in the scene... or are the two simply not compatible.

From my attached images you'll see that i've managed to achieve i reasonable result in the example with large windows but only seem to achieve very blochy results when a small window is present. Both images are rendered with the same settings except for FStop and Iso configuration.

any thoughts??

Attached Images

	Internal.jpg (158.8 KB, 458 views)
	InternalBedroom.jpg (179.0 KB, 307 views)

aaron-cds

This rendering was done with the vray sun & sky with a physical camera. No additional lights were used. It's possible.

Attached Images

loft-interior-small.jpg (147.9 KB, 497 views)

__________________
Aaron Coon, Conceptual Design Studio

dra3

wow!!!really just vray sun and physical cam,,,would it be to much to ask if u can teach me how to do that,,,id really appreciate it,,,

__________________
Inspiration is what drives me most,,,

Trevor Tizard

I've done a couple of external images with the Sun/Sky and Physical Cam and recently looked at internals too. Seems you would still need two camera set-ups and still need to comp them together to move from inside to outside and vise versa.

aaron-cds

I'm not a teacher, but I can say that it's just about getting the correct exposure with the physical camera. That's it.

__________________
Aaron Coon, Conceptual Design Studio

JamesTaylor

Aaron,

did you find you had to pump up a lot of the render settings to achieve the quality of render you have? and what sort of render time did you achieve on that image (plus at what res)

as you can see from my images there is a lot of blotchness, which i've tried to overcome by increasing the subdivs of the sun, the IrrMap, image sampler (rQMC) etc. etc. also tried substancially increased the no. of secondary bounces which worked quite well, but all these substancially increased render time. Overall, i felt what i was tring really wasn't that efficient???

Could you post your settings for the scene, would make interestesting viewing!!

I figure that in theory it should be absolutely possible given that the sun and sky value now replicate those of the real world as do the features and controls of the physical camera.

Finally i must say that is a great image for a 9 year old!!!!!

cheers



Trevor,

i anticipate having to render two passes and create the transition in post to mimick moving outside, i'm planning on rendering .RPF files with objectID's included and only fading the external elements... i think it would be better (or most likely that the clients comments will be along the lines of seeing both the internal details and the external scene with the same clarity, which we all know is bending physics!!). However, if it looks odd i'll just go for a straight fade of the entire image.

batteryoperatedlettuce

The quality of that rendering is great - I'd like to know about the IM + LC settings.

aaron-cds

I applied the principles of this method - float baby float

http://www.chaosgroup.com/forum/phpB...ic.php?t=17824

note: this method is for exteriors but with a little experimentation it can work for interiors.

__________________
Aaron Coon, Conceptual Design Studio

kippu

very interesting and i thought no one uses that ....do you do the same on your exteriors

__________________
architecture visualization services
www.renderviz.com

JamesTaylor

Aaron,

thanks for the link... i'd already had a little play with similar render settings to those used in the tut (i.e QMC & LC) but i have missed a big chunk which is what was primarily illustrated in the videos... guess that means for this one i'll have to go back to the standard methods since i have deadlines to meet but i'll be giving it a go nexttime round!!

Thanks