V-Ray LUTs Explorer

[^Lele^]

You can keep asking, and get no response from the coders.
No reply doesn't mean they haven't read, it means they have no reply to offer yet.

I gave you a free tool, which is better than nothing, and in the process showed you that it's well within the scopes of an artist's skills (Where scripting belongs.).
I also wrote, in bold, that i'd accept no request, nor provide for any support, so your surprised resentment is well out of place, as is, but that's strictly my personal take, the boundless sense of entitlement.

You're left, really, with few choices: dig into the tool code and make it better, make do with what's been freely provided to you and some of your own legwork (we also have families we'd like to see, every now and then, you see. A bit each, yes?), or wait for whenever the VFB will have what you want.
Maybe for V4, maybe sooner, maybe later, maybe never: you'll have to wait for the reply of someone who knows.
I spontaneously tried to help, on a weekend, in July.
I shall go more to the sea instead.

Personal request: please stop naming every other renderer on the planet and make it a yardstick able to sustain an argument.
It's not a valid argument, it's awfully tiring, it's hardly ever actionable.
Find better arguments than "X has it", or "I Don't want to do that", and we may enter a mature conversation on features and workflows.
This approach isn't one i feel i can contribute to in any meaningful way, so i'll stop right here.

[Sbrusse]

Sorry if I offended you Lele, and I appreciate your work as I mentioned in my first post on this thread, this tool is absolutely great.
I didn't meant I would like this tool to be any different, I just wished this tool as well as some other implementations where done straight in the VFB.
Maybe I should have gone with those wishes on another thread where we also speak exactly about the same things, I just lose track with all those threads spread around.
I'm very grateful you took it on you to get this tool out and I'm sure it will be a real benefit for the whole community

Thanks again
Stan

[AltoR]

HI,

You can grab free LUT files here: https://luts.iwltbap.com/

[AltoR]

Great tool Lele, thank you.

But I have a problem when I try to save the result: I launch your script, load a LUT .cube file, choose a preset I like and then hit the "Save current channel" button. But when I open the image in PS, it seems the LUT has not been applied. What am I doing wrong ?
I also tried saving the image using your "Save Variations" button: it works but I can't have a 16bit Tiff image, only 8 bits.

[^Lele^]

EXRs do not save the LUT, while any non-FP format saved directly from the VFb should maintain the color corrections.
I do not know of any option for the file saving from the maxscript side, so 16bit tiff can't be processed by the script, currently (they seem to always come out as 8bit).
Saving one from the vfb itself, however, will pop up the TIFF format settings, and all ought to be good.

[AltoR]

Thank you Lele.
Unfortunately when I save the image from the vfb itself, the LUT correction is not saved. I really don't understand that point: I just can't save the LUT correction, I also tried with .jpg with the same result.
Do you have an idea ?

[^Lele^]

odd, i think it may be a bug (the method the script uses is identical to the save icon, in theory.).
Will investigate.

[theedge]

In the V-Ray doc, about LUT : "This is a display correction that is only applied when the image is viewed in the frame buffer. It is not applied when the image is saved to a file."
source : https://docs.chaosgroup.com/display/...orrections-LUT

[^Lele^]

Yet, the save wedges uses the same save method as should be the save file button.
And that clearly saves the LUTted wedges, in the right format (and always had, that i recollect, but i may be wrong).

Will look into it (got busy with some other thing yesterday) asap.

[AC5L4T3R]

Do you at least accept praise!

Thanks Lele! I just discovered LUT with Fstorm and now it seems I can play with them as easily in V-Ray!

Anyone knows where I could get a nice set of LUT to play with?

If you have Photoshop, they come with a few that you can find in the PS folder, just search for .CUBE in windows explorer. There's also a pack here: https://drive.google.com/file/d/0Bys...pGV2NrdTA/view

[Vizioen]

Yet, the save wedges uses the same save method as should be the save file button.
And that clearly saves the LUTted wedges, in the right format (and always had, that i recollect, but i may be wrong).

Will look into it (got busy with some other thing yesterday) asap.

And besides those above, the same guy created these Octane Luts. https://drive.google.com/a/vizioen.b...FSQmxyN28/view

[jstrob]

Thanks for thew LUTs links! Keep 'hem coming!

On the other hand we all know that every LUT has to be applied on a source file that has a similar profile to that of the source picture that was use to create the LUT in the first place, or else the LUt will not work the way its creator has intended. All LUT were created for camera using flat profile (slog2 on my sony camera or cinestyle profil on a canon camera) that make the image look dull so if we use LUT in CG we must first make the image look dull and look at thopse camera unprocessed output and try to match their look and feel before applying the lut. It's kind of ironic cause instead of saving time we kind of spend time destroying our perfect CG images to make them look like one out from a camera! But hten we get more realism and better film look.

More about that cinestyle profile: http://www.technicolor.com/en/soluti.../cinestyle-faq

example of a video shot in slog2 woth the sony A7RII and lut applied for film look: https://vimeo.com/143481640

And here some examples of ungraded slog2 (the look we should match before applying our LUT: https://vimeo.com/153686075

[Sprawl]

Hi all,
First of all, thank you Lele for this script, it's very usefull!
I'm not a coder but I tried to modify the script to save only one image with the selected LUT, because if I use the save icon on the vfb doesn't save the LUT.
Hope you appreciated

Sprawl

[^Lele^]

Hi all,
Hope you appreciated

Sprawl

Very good indeed! Please keep modifying and adding to it, and then kindly re-share it.
I couldn't think of a better life for it!

[roboxx]

Hi Lele,

i was using your very useful script LUTs Explorer quite regularly in 3dsmax 2016...thanks for that.
Now i moved to 2019 and the script isn`t working anymore as expected.
The really cool feature of just using up and down arrow on the keyboard for quick trying out different Luts isn`t working in Max 2019, also the save variation isn`t working either...script saves me the correct named PNG`s, but they all look the same.
Do you have experienced similar problems and is there a way to update the script for 3dmax 2019 ?

Best

Robin