correct process for muti render camera

[fraggle]

hello,
What is the best process using IR/LC with mutiple camera in a single room.
- Cam1 360° ration 2/1 (spherical, fov 360) 4 frames (4 position)
- Cam2 default camera, ratio 4/3, 4 frame (4 different angle)
- Cam 3 default cam with clipping on for wall projection purpose, ration 4/3, 6 frame (6 different elevation)

Should all camera have the same
- shutter speed
- F-number
- Iso


At the end all of them are still render.
The animated frame are used only to simplify the rendering process, otherwhise we will get 4+4+6 = 14 camera instead of 3.

Thanks

[Zdravko.Keremidchiev]

I guess this will depend on the scene but generally this same exposure camera settings should work fine in most cases.
Also you can use the IR map calculated from Cam 1 in a "Incremental add to current map" mode. This way every other camera position will refine the first IR map until it sample the whole scene. Then you can use this Irradiance map for the next cameras without pre-calculating it.
http://docs.chaosgroup.com/display/V...Multiple+Views

[fraggle]

thanks, sure IRmap in add mode is the choice.
The concerned was more about the impact of different camera setup vs the existing IRmap/LC map.

To date, we still have no clue on this subject.
We do understand that everything that is in the scene impact with calculatin pass, but what about the camera, I.E. FOV, exposure, type of camera, white balance....

[Morbid Angel]

your best bet is to use state sets, for each state you can override your camera and any other attribute, like irradiance map, light cache etc. I just recently did this. For each camera I named a state "cameraName" and overwrote its output to be what I needed for this camera, for example name of state set is cameraView1, then it uses the cameraView1 (render camera) and vray frame buffer output is set to C:\temp\cameraView1.exr (as example).

[fraggle]

I guess this will depend on the scene but generally this same exposure camera settings should work fine in most cases.
Also you can use the IR map calculated from Cam 1 in a "Incremental add to current map" mode. This way every other camera position will refine the first IR map until it sample the whole scene. Then you can use this Irradiance map for the next cameras without pre-calculating it.
http://docs.chaosgroup.com/display/V...Multiple+Views

Is it normal to get an IRmap with a smaller size while doing the folowing process on exactly the same scene:
- CAM1: LC/LC flytrough
- CAM1: LC from file / IRmap incremental "fileA" (size is 10)
- CAM2: LC/LC flytrough
-CAM2 with vrayclipper ON: LC from file/IRmap incremental Add to "fileA"(size is 7)!!

So normally the CAM2 add some sample on top of the "fileA", so it's size should be bigger. What I am doing wrong?