[walterfog]

is there any tutorials or topic where to understand in how to use the phisical sky with cinemaxwell?
i have to do an exterior scene... daylight and first of all night light...
i try to download some preset sky from mxmgallery... but when i load it in the phisical sky cinemaxwell tab, and try to render it, the render seems to be always the same.. nothing change from sun to sun...

could anyone please teach me how to use it please? where could i find information?

please help me very urgent....

thanks at all

walter

[JDHill]

Physical Sky is described here, and also on pages 24-26 in the plugin manual. On the use of .SKY files, I just checked here, and it looks like the function that reads them is broken (behavior is the same in the plugin and Studio) -- the atmosphere parameters are being read correctly, but not the location & time data. So, try loading the desired .SKY file, and then setting the location and time of day that you want.

[walterfog]

ok.. thanks so much JD...

i'm trying to setup a night exterior scene... with phisical sky and son emitter.. but it seems to remain very hardly noisy....
there are some rules to follow that could help to have less noise and the final image?
sorry for my bad english....
thanks again
walter

[JDHill]

Which time of day do you mean when you say night -- evening/dusk, or actually at night? The normal advice for optimizing actual night scenes would usually revolve around optimizing emitter geometry to have as few triangles as possible, but if you are only using the physical sky and sun, then that would not apply. You may want to ask your question in the regular Maxwell Render forum (this forum is specifically meant for questions related to the Cinema plugin), to get feedback from people who might've dealt with this situation.

[walterfog]

thanks a lot JD for your feed back!!
i mean about evening / dusk....
i have some emitter but already at minimum poly number....
I only give you a ultimate question: in the evening / dusk situation, it could be useful to have an emitter near back to camera, that could help to clean more efficently the noise?
thanks ayway

best
walter

[JDHill]

It may help, if it is appropriate for your situation. Just as when shooting such a picture with a real camera, you could fill with a flash, but it might not be appropriate for your image -- if it is not, then you would need to use faster film or a longer exposure time instead. In Maxwell, this would translate into longer render times, since changing shutter/ISO cannot reduce the render time.