VRay Physical Camera...Orthographic?

[Dynedain]

Using the phys. camera exposure in orthographics views would allow you to use the exposure settings and I think this is what he's going after...

What might be nice then would be a VRay Exposure Modifier for the 3DSMax Cameras.

[re:FORM]

I've suggested a similar idea; a global exposure setting to effect max cameras, and perspective/user viewport renders in vray render settings.... but a modifier would be a great idea too!

[cpnichols]

I've suggested a similar idea; a global exposure setting to effect max cameras, and perspective/user viewport renders in vray render settings.... but a modifier would be a great idea too!

You guys are wrong on this... the physical camera is all dependent on things that the physical camera has... filmgate, lense size, distortion, etc... the exposure is a factor of all this. The Max camera, like the perspective view, like all other cg cameras, is in fact a pin-hole camera. There is no such thing as exposure on a pin-hole camera. Neither is there a way to do in on an orthagonal view. If you universally want to expose the amount of light up or down use the color mapping. There is a multiplier setting there you can can cut tyhe ligth in half or double it to your hearts content... Don't pretend that the perspective camera, or an orthagonal camera has the attribute that can actually dictate how much light can see.

Now.. on to to more important things... Clfton's avitar is not him... but a picture of Gunther, made famous on the internet my such videos as the Ding Dong song:

http://www.gunthernet.com/gunther04.htm

[Clifton Santiago]

I wondered how long it would take someone to recognize my avatar. Of course Chris has an advantage because he knows I don't look like that. My mullet is much longer in back.

[nvanherpt]

Now.. on to to more important things... Clfton's avitar is not him... but a picture of Gunther, made famous on the internet my such videos as the Ding Dong song:

the illusion is destroyed

never had a mullet myself. often considered shaving it all off, closest i got was a no.2 all over when i was 23.

[re:FORM]

Well, as long as the tache is accurate, I'm happy.

As for the camera, I know its got alot of parameters that would be redundant in a perspective, or orthographic view.... but isn't there the potential to deal with the parameters that only effect exposure, ie f-stop, shutterspeed, shutter-angle, iso. Are there others?
For other parameters that effect the actual projection of the camera, ie film gate, distortion, etc to what extent do people need to adjust these for test renders? ie for orthographic you would ignore distortion, and leve film-gate at the standard 35mm.... same for perspective views.

Basically, I know we can't get 'exactly' the same exposure as produced by the vrayphyscam, but we don't need to, all we need is something that isn't burnt out if we are using vray sun/sky.

[beestee]

I can duplicate values and make it work with the standard camera, so it is not a necessity. The exposure control would just be a nice additional feature for my orthographic elevations, a time saver more than anything.

[cpnichols]

Knowing vlado as I do over the years, doing this would be completely against his philosophy of operating in a physically accurate world. I seriously would doubt that this will be a priority. But I may be wrong.

[re:FORM]

Ha... too true.... I feel bad for asking now!

[beestee]

It would take a noticably superior approach to replace my employer's current presentation layout, but it is probably what needs to be done. After all, who is going to see the building from an orthographic view once construction is complete? If the main focus of our presentation is to show what is proposed to be built, why not show it from views that the persons reviewing the presentation would physically be able to go see once construction is complete?

Perhaps to maintain the construction document feel for our presentations, we need to look into creating a cover sheet, showing some preliminary elevations in a sketch format, eliminating my need of VRPhysCam exposure control in an orthographic view and giving us a seemingly more complete presentation.

It still remains an issue for chaosgroup, though, if they wish to include complete compatibility with isometric/orthographic rendering within the future of VRay. I personally would imagine it is more of a limitation than a precaution to exclude functionalities of the existing standard max camera.

[cpnichols]

It would take a noticably superior approach to replace my employer's current presentation layout, but it is probably what needs to be done. After all, who is going to see the building from an orthographic view once construction is complete? If the main focus of our presentation is to show what is proposed to be built, why not show it from views that the persons reviewing the presentation would physically be able to go see once construction is complete?

Perhaps to maintain the construction document feel for our presentations, we need to look into creating a cover sheet, showing some preliminary elevations in a sketch format, eliminating my need of VRPhysCam exposure control in an orthographic view and giving us a seemingly more complete presentation.

It still remains an issue for chaosgroup, though, if they wish to include complete compatibility with isometric/orthographic rendering within the future of VRay. I personally would imagine it is more of a limitation than a precaution to exclude functionalities of the existing standard max camera.

Again... exposure can be controled through the color mapping. There is no math in this universe that can calculate the fstop on a lense with a focal length of infinity. For Sun and Sky use a light multipier of 0.001 (approx).

[tricky]

I know this has been covered reasonably extensively, but these 'elevational' (or orthographic) cameras are an increasingly useful thing. I know that a vrayphysical camera cannot create an optically correct ortho projection, but couldn't it 'simulate' it as near as possible - maybe a new camera called a 'vraypseudoorthocam'.

Basically, I don't want to be messing around with colour mapping and exposure with standard max cameras. I just want to be able to copy a true vrayphysicalcamera whose exposure/mapping/white balance values I am happy with, and move it into an appropriate position to get an ortho projection render. Equally, I don't want to have to create a 2000mm camera and move it 5 miles away from my model!

It isn't physically correct, I know, but who cares? Doesn't a computer allow us to do things that are physically impossible.

[vlado]

Yep, it's been requested a lot so we are thinking of a solution for such cases.

Best regards,
Vlado

[nvanherpt]

i'm with tricky on this, good news vlado.

[tricky]

Stunning news Vlado