How can i save a render like a raw versión, with vray 5.1

[luisgamino2]

Hi slavcho brusev

How can i save a render from the output seetings in vray 5.1 to a raw file, i want to try camara raw 14.0 in Photoshop, im going to keep using the VFB but for composite and probably use the tone mapping and then Make the last adjustments in camara raw, i found very interesting camara raw. VFB 2 is great, i just want to make a comparison between VFB 2 and camara raw in Photoshop,

Thanks in advance

[luisgamino2]

I didnt find an option to save a render like a raw file, not Even in output settings in vray neither in VFB, Is this possible???

If this is not possible i would like to bring this option as a new feature, as You already know slavcho brusev, in a raw file You have more information than a tiff or png, i really need an option to save as raw file, you don't loose any kind of information and maybe i can achieve a better image using a software like Photoshop and Also with camara raw probably the Best solution. I'm going to play a little bit with camara raw and i'm going to bring You a feedback of what kind of parameters i liked the most in camara raw 14.0, so i hope in the future You can bring those parameters too.

Thanks

[sirio76]

If you need more information just save in a 32bit format (without any post process like highlights compression etc), you will have a lot more information than a raw file.
The problem is that PS is terrible for editing 32bit images, so your best option is to tone map the render inside the frame buffer and edit inside PS/CameraRaw in16bit.

[luisgamino2]

Hi sirio 76

I'm rendering in 16 bits with vray gpu 5.1, rendering in 32 bits takes too much vram sirio since i own 2 2080 ti with nvlink is almost impossible and i get a crash thats why i decided to render in 16 bits.

Right now with camara raw 14.0 i can use camara raw with tiff files and it works ok, but raw image is like the old negative in this contemporary Moments it is not proceded as it is tiff file, i did some research and i found raw images is like the old virgin negative when You have all the information but the software don't procces anything, That is why i asked slavcho if we can save a render like a raw file... I think this is very important!!! To save a raw image so i have all the information and work it in camara raw. There is a Lot of options in camara raw!!! And i felt the new software very confortable Even more than Photoshop

Thanks for the advice

[slavcho.brusev]

luisgamino2 Save the image as .exr file this will give you a 32bit format image.
This will give you the most information out of your image. Don't worry about saving the image in higher bit formats. This will Not take more memory than other file formats. The V-Ray Frame Buffer actually stores the image in the system memory(the RAM) even if you use the CUDA or RTX engines, so you don't need to worry about VRAM in this case. This is actually another optimization so V-Ray overall can use less VRAM.

[luisgamino2]

So in the gpu management in the Main settings there is an option to choose 8 bits, 16 bits, 32 bits right now i'm choosing 16 bits, if i choose 16 bits and save it as exr... What is going to happend? Is it going to be saved as 32 bits Even if i choose 16 bits with exr???

And Also in the output You can choose exr and 16 or 32 bits are You sure it doesnt take more vram...

Can You explain it a little bit more please and Also please take note that im going to use Photoshop with camara raw which support only 8 and 16 bits and it only accept tiff files, jpg and raw files.



thanks

[cajon49]

Con Camera Raw se edita mejor y provecha la Superresolucion, esta excelente! Su I.A. te duplica la reslolucion.

[luisgamino2]

Si así es cajón49, me ha parecido una maravilla camara raw y su super resolucion trabaja bastante bien, no se pierden detalles y casi no genera ruido, también colores y texturas se editan muy bien en cámara raw, 2 valores me parecieron increíbles...luminancia y sombras, la semana pasada probé súper resolución en un interior y hoy voy a probar en un exterior, no es lo ideal sacar los renders así pero ahorro muchísimo tiempo, pase de 9 horas a 4:30 horas de renderizado, ya por esa opción vale la pena Photoshop, por fin pude platicar en español aquí en el forum.

Saludos Cajón 49

[konstantin_chaos]

Hi luisgamino2,

The GPU settings that you're refering to have nothing to do with the image output.
They only apply to textures from the project and the way they are handled during rendering.
It is absolutely fine to set this parameter to 8bit and still output an EXR (or a multichannel EXR) for post editing.
As Slavcho pointed out the VFB image is always using 32 bits so saving it from there should also work.

I believe that Photoshop will let you use the camera raw workflow with EXR and HDR images.
An as sirio76 said the raw image that V-Ray saves has none of the limitations the real camera output has.
It contains all the data possible.
So the possibilities for adjusting the result should be even greater.

Hope that makes sense,
Konstantin

[luisgamino2]

If this is the case, why You don't set it like 8 bits and take off this parámeter, as You already Say Konstantin and slavcho, if i get the same Quality render using 8 bits, 16 bits or 32 bits takes it off and only leave full size texture, resize textures or on demand bit mapping. Just take off that part, 8 bits, 16 bits, 32 bits is just confusing Even for people who knows the software.

There is other button in the Main settings that doesnt do anything... Bucket size for vray gpu it doesnt do anything, why still there, take it off, and take it off 8 bits, 16 bits and 32 bits it doesnt affects anything in the gpu memory management and leave it at 8 bits by default so vray gpu users don't get confuse, and Also select in the internar way in 8 bits and take it off and don't show again this parámeter in the settings.

Some months ago i wrote to Muhhamed please take this parameters off.

Didnt hapend anything, those buttons that doesnt work still there in the Main settings. ( Main settings for vray gpu almost didnt change anything in years)

But You keep bringing things to vray like progressive caustics and i don't see a really effort on vray gpu, i have to tell You the truth!!!

Best regards

[luisgamino2]

I used to have problems with this Konstantin some time ago i couldt render a proyect because i thought that gpu management choose the bits for your render.

I thought that parámeter was very important to have a Nice texture at the render and the final image.

But i see this do nothing for the final render, why You didnt change that???!!! Vray gpu takes so much vram with 32 bits, with 16 bits more or less and with 8 bits almost nothing.

Are You sure You can keep 8 bits and get the same render that if i use 32 bits. Do You have an example about this...???.

Vray gpu needs more work, You spend so much time with vray and not with vray gpu, i always see a Lot of new features with vray or lot of changes with the hotfix, but i don't see too mucho for vray gpu.

You should take off that settings long time ago.

I hope You can bring an example about 8 bits, 16 bits and 32 bits.

I want to render at the Best Quality, i'm an Architec, i want to offer a profesional work for My clients

Best regards

[luisgamino2]

I did a test Konstantin and with 8 bits, 16 bits and 32 in the gpu management settings with full size textures and it looks all the same i don't see any kind of differences and they all look really Nice. So maybe this is the clue, use 8 bits to work with update 5.2 i'm using studio driver 511.09 the latest
i was thinking for so long that parámeter was very important but it doesnt do anything, is like a vestige, if You set 32 bits it takes a Lot of vram but really a Lot( i got a crash) and if You set to 8 bits the textures almost don't take vram just 1 gb of vram and renders perfectly smooth.

So probably for someone who is new in this subject vray gpu this parámeter should be by default in 8 bits ( and in a internal way so we can't see this parámeter), because if You set to 32 bits probably You are going to get a crash it takes so much vram.

I'm going to try tonight 5.2 with 8 bits.

Thanks Konstantin

[konstantin_chaos]

Hi luisgamino2,

If this is the case, why You don't set it like 8 bits and take off this parámeter, as You already Say Konstantin and slavcho, if i get the same Quality render using 8 bits, 16 bits or 32 bits takes it off and only leave full size texture, resize textures or on demand bit mapping. Just take off that part, 8 bits, 16 bits, 32 bits is just confusing Even for people who knows the software.

If you have 32bit textures to start with, then the option is useful.
We will consider hiding and setting it to 8 by default.

There is other button in the Main settings that doesnt do anything... Bucket size for vray gpu it doesnt do anything, why still there, take it off, and take it off 8 bits, 16 bits and 32 bits it doesnt affects anything in the gpu memory management and leave it at 8 bits by default so vray gpu users don't get confuse, and Also select in the internar way in 8 bits and take it off and don't show again this parámeter in the settings.
Some months ago i wrote to Muhhamed please take this parameters off.

The bucket size actually works.
You will see a difference if you increase it.
There is some kind of a lower limit however which is preventing you to use smaller values.
I'll consult with the GPU team and we'll consider hiding it.

But You keep bringing things to vray like progressive caustics and i don't see a really effort on vray gpu, i have to tell You the truth!!!

None of the Photon Mapped Caustics work with V-Ray GPU.
There are however people rendering on the CPU that need the new mode and that is why we exposed it.

Konstantin