LWF quick and simple video tutorial by lukx

[lukx]

Okey, thanks to panthon I finally got this LWF thing . I made short and simple video tut how to setup max and vray to start using linear worflow. This method is the simplest one with burning linear worflow directly into image so you don't have to bother with saving files as .exr and so on. Just setup max, vray, hit render.
To see the video you will need this codec: http://download.techsmith.com/tscc/tscc.exe

here's tutorial:
http://www.lukx.com/misc/shared/LWFbyLukx.avi
I will probably also create pdf version

ps. thanks Dave for tip about megaupload and mirror

[dbuchhofer]

Thanks for the video.. (Removed my link)

[panthon]

That's really cool!

From not understanding anything to creating a videotutorial! That's the spirit

Edit: After seeing your video I have noticed there's one thing different in my workflow. I check clamp output, otherwise i get some nasty jagged edges on bright areas. I would say non-campled outputs are mainly used with formats using float point like exr or rpf 32 bit. If you are outputting to tga or tiff, i don't think u benefit from that.

Thanks for the video!

[lukx]

panthon without your help I wouldn't get it. Ok I will record one with clamp checked .

[panthon]

The info i have got is all from these forums, so i would say i just summarised it for you. Anyway, I would wait for the masters to come and correct. It will be good to hear their contributions, as I am no expert at all.
I am sure they don't like the "simple" method much, as I understand they demand more flexibility, but i hope this step by step will help lots of people who actually don't need TMLP (that much linear power).

[Candelero]

It is better to leave the Color mapping type to Linear.
As rendering in the VFB with Gamma CM - you would lose the Linear state of the image thus. The easiest way to save the image in 2.2 is just activating the override gamma in the Save window and set it to 2.2.

Why ?
Because:
The VFB doesn't take into consideration the MAX Gamma value, the one you set to 2.2. That is needed if you intend to render in the MFB. So in your case
if you render in the MFB you would get your image corrected twice. Once because of the MAX gamma = 2.2 and once more because of the Gamma CM, and it will be washed out.

Best regards,
nikki Candelero

*CM = ColorMapping

[DaForce]

Ahh true, but in the MFB you can just override the gamma and set it to 1.0, thusly saving the exact same image

Nice simple tut Lukx!!

Pretty easy once it all clicks hey

[Candelero]

Ahh true, but in the MFB you can just override the gamma and set it to 1.0, thusly saving the exact same image

Damn right as always, but rendering thus, you would be actually looking at on 2-exposed image, aren't ya... So you need to save (Override 1.0) , then open it and see if it comes ok...

the idea is always to know how it will look like in the moment of rendering,
while the buckets are running... at least for me this makes sense.




Best regards,
nikki Candelero

[lukx]

?? but we're using vray frame buffer so it's okey? The overexposed is only when using max frame buf to see image.

[lukx]

ok I did small test. First image is saved form VFB (gamma corrected 1 / 0.454 and max preferences as in tutorial) and second is from MFB with max bitmap files output 2.2 an linear mulitiply color mapping. As you can see sky is different (affetc background is unchecked in both)and there is a bit diff in shadow are under the beam and around the window.

[DaForce]

To Nikki:
True true.

But no reason to not use the VFB anyway hey

To Lukx:
Correct Lukx.

Comments were before seeing the above post.. FYI

[DaForce]

The gamma corrected way will have differnet shadows slightly as vray calculates the samples differnet because of the color mapping.

In the 2nd image it looks as if the background is still being affected as its just a bitmap that is loading in the ME which you have set to be gamma affected in the preferences via the input bitmap
To resolve this add a color correct to the background map in the ME and set it gamma to 2.2. That will then match exactly

[Candelero]

The gamma corrected way will have differnet shadows slightly as vray calculates the samples differnet because of the color mapping.

In the 2nd image it looks as if the background is still being affected as its just a bitmap that is loading in the ME which you have set to be gamma affected in the preferences via the input bitmap
To resolve this add a color correct to the background map in the ME and set it gamma to 2.2. That will then match exactly

Absolutely right !

Best regards,
nikki Candelero

[DaForce]

Thanks, Wouldnt have it any other way... except occasionally


And to clarify further. the reason why the VFB render doesnt show the background brighter is because it ignores all the max gamma settings (as Nikki said earlier)

[lukx]

tut is updated without checking clamp output