Jump to content
Sign in to follow this  
jon3de

render view with logarithmic compression / tone mapped

Recommended Posts

Is it possible to show my render with a logarithmic compression directly in the render view ? For balancing lights I like it to check my renders with some color mapping applied to see better how it will look in compositing. In Vray e.g. you can directly color map the image ( Im just talking about color mapping the values while still have linear data ) 

I thought about creating a LUT for that in cops, and use that in the render view, but unfortunately i can´t create a LUT from a vopcop filter. Only from color correction operators. 

Is there something what I am missing or does someone have a idea how to achieve that? 

Thank you.

Jon

 

This is the linear render. The second picture shows the compressed image and how I want to see it in the render view. 

logarithmicCompress.thumb.JPG.2abee2187bd36e47df33eb601c8d323c.JPG

unfortunately you ( or just me )  cant convert this vopcop filter with softClip inside to LUT....

image.png.018a19b7f111225c050c3976118060c6.png

Edited by jon3de

Share this post


Link to post
Share on other sites

I'm running Houdini with ACES config, and using Redshift for my viewer.  With the Redshift viewer, you're able to apply different LUTs pretty easily, so I haven't played around too much with configuring Houdini for a specific LUT.

I did stumble upon the link below, and sounds like you can apply LUTs directly in Houdini.  You'll have to grab a lin2log.lut or whichever you want to use, then apply it under Edit->Color Settings->Color Correction.

https://www.sidefx.com/docs/houdini/composite/luts.htm

Share this post


Link to post
Share on other sites

Hey Dave,

Thanks for your reply. Yes I could also choose a lut directly in the render view. That was my attempt to create a lin2log.lut in a vopcop and convert this to a lut but conversion to lut from vopcop is not possible unfortunately. Only from pixel operators. 

Do you know where to buy/download a pure lin2log.lut ?  Somehow it´s not that easy to find one :) 

Share this post


Link to post
Share on other sites

Hi jon,

Sorry, I can't seem to find the website I'd used a last year to generate luts with. Try searching for "conversion luts", since you're trying to convert an image format and not apply a filmic look.

 

Cheers,

Howitzer

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×