SandmanNinja

With Mental Ray and mrPhotographic settings, these are all valid guidelines.

With Mental Ray, since it's just "math" following a "forumula", you can punch in an ISO of 32 or 16 - it doesn't really exist in the real world, but it will have the same effect mathematically.

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-SandmanNinja
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crazy homeless guy

This is perfect.... Well almost perfect. It would be nice if it had White Balance on the roll out also.

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travis schmiesing

daveb867

glad i could be of assistance

only problem is i don't know how to use it.

does this mean that you don't need to use the mrphotographicexposure anymore, can we leave that deactivated and just adjust the exposure per camera???

and due to the fact there is no white balance control on the cam, then how would you get around that? PS maybe??

crazy homeless guy

actually, i only had a chance to install it. my initial reaction was that it was the solution to the problem, but on closer inspection, it actually is not. i read Zap's blog post about it, and he clearly outlined that he created the script because this is where he felt the information needed to be rather than the environment roll out. he also made it clear that the script he created simply called the ones in the environment, and was in no way a solution, but more of a concept.

here is the basics of how his the script works...

you go to the camera create panel as you normally would. if you have the script installed, there will be an option to create a mr camera. you create that, and the camera controls are then part of the modifier tab. you can adjust the shutter speed, f-stop, ISO and a couple of other things.

the shutter speed, f-stop, and ISO in the modifier panel are scripted to change the information in the environment roll out. when you change the number here, it changes the number in the mr photographic exposure settings in the environment roll out. so yes, you need that enabled.

i was wrong in saying you could not control the white balance. since you still use the mr photographic exposure enabled, the white balance is still in place.

where this script fails for me... it is not on a per camera basis. i was hoping that the camera settings were attached tot he camera. if it was on a per camera basis, then when you switched cameras, the f-stop, shutter speed, ISO would all change to the settings needed for that camera.

to me this script suggests that a per camera might be possible if i had a little knowledge in the scripting department. which i do not.

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travis schmiesing

daveb867

ah sorry, was worth a shot anyway, my bad for not reading (or understanding) the blog post in the first place

crazy homeless guy

well i don't consider wasted time by any means. to me it appears that there might be a way to pull this off through scripting. i may be easier to use the 'basis optmize exposure photographic' shader by Thorsten Hartman to achieve it though. i really need to learn Max scripting.

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travis schmiesing

Camby1298

Its not Max scripting in this case that you need to know. Its how to develop mr shaders for this specific instance. There are many tutorials on the web on how to develop shaders; I'll have a look into it as well.

crazy homeless guy

Possibly, it would certainly give you more options. That is how the BO script is set up, but Zap clearly states that he called the existing MR Photgraphic controls via scripting, not by developing a new shader. It is a '.ms' file, and not a '.mi' file.

http://mentalraytips.blogspot.com/20...h-dof-and.html

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travis schmiesing

Camby1298

So true, but one of the best features of mr is the ability to customize it per user (hence why it is used vasly in the VFX field). But by developing your own mr Camerea shader you can include those features found in the mr Photograph Exposure plus any other custom features.

I wish you would say this to my face