What is the utility of Physical camera ,etc?

[archkre]

Vray is getting more and more complicated !

What is the utility of Physical camera and all 0.255 calc's + Reinhard/ Gamma crap?

[Crazy Homeless Guy]

they still have a standard camera. if you don't feel there is a need for the physical camera, then don't use it. if you don't feel a need for LWF, then don't use it. no one is twisting your arm.

 

...but the simple answer to your question, LWF gives you accurate color, faster rendering, and a proper amount of color bleed. physical camera gives you more control over the exposure and look of your image.

[archkre]

they still have a standard camera. if you don't feel there is a need for the physical camera, then don't use it. if you don't feel a need for LWF, then don't use it. no one is twisting your arm.

 

...but the simple answer to your question, LWF gives you accurate color, faster rendering, and a proper amount of color bleed. physical camera gives you more control over the exposure and look of your image.

Can you please explain in short what the infamous LWF is, please.

The explanation in the Vray forum is extremely long and confuse!

I understand the gamma goes to 2.2, the colors to 0.255 and what else?

Thanxx

[Ricardo Eloy]

I don't think there can be an explanation for that "in short". Linear Workflow is a pretty complex thing, and I believe the explanation found in their forum is actually a good one. There are also a few threads about it here, use the seach engine and you'll find a lot of material...

[aaron-cds]

The welcome to vray pdf explains the different color mapping in a way that's easy to understand. Regarding the .255 method, watch Lele's video as many times as you need to understand them (for me - 3 times). Once you understand the concept, setup a default scene for exteriors with a physical camera and vray sun that's ready to go. The .255 method is faster and produces better shadows than LWF. The only downside is the extra time it takes to change output levels to .255, which is the only thing you have to do once you have a default scene setup. Using the "!" and "crap" sounds disrespectful to the people who have offered so much time to explain things in a complete manner. All you have to do is read. a lot! But hey, once you get it, they'll come up with something else.

[AJLynn]

I agree - I tried the .255 method on a couple of my exteriors, and it works very well. It's a couple extra steps but render times go way down and image quality goes up.

 

Now, is it true, as he says in the videos, that Vray is going to get a physical shader model? That would be pretty kickass. And complicated - like Maxwell materials, which I actually started to like after I figured out what the heck they were.

[rivoli]

I understand the gamma goes to 2.2, the colors to 0.255 and what else?

 

not exactly. working linearly is a thing, while the 0.255 method it's a clever way lele came up with to correctly expose scenes where you use vray's sun/sky and camera. it sure has to do with lwf, but you don't have to gamma correct and bring down all your colors and maps to 0.255 to work in liner space.

lele's videos explain in detail why and how he came up with it, I'd suggest you have another look at them.