Camera Response Functions

Discuss stuff not about Indigo.
Post Reply
7 posts • Page 1 of 1
User avatar
Originalplan®
Posts: 737
Joined: Sat Sep 26, 2015 8:58 pm
3D Software: Cinema 4D
Contact:

Camera Response Functions

Post by Originalplan® » Sat Jul 09, 2016 8:58 pm

I wonder is there any way to Add custom camera response functions?
From .cbf or Lut's is it possible somehow to convert these .txt extentions that Indigo uses right now??

Just wonderin..

Eneen
Posts: 165
Joined: Thu Jan 21, 2016 9:32 am

Re: Camera Response Functions

Post by Eneen » Mon Jul 11, 2016 5:31 am

Those camera functions are from here:
http://www1.cs.columbia.edu/CAVE/softwa ... b/dorf.php
Maybe there is spreadsheet rule for that or sth similar?
Last edited by Eneen on Tue Apr 04, 2017 9:07 pm, edited 1 time in total.

User avatar
Originalplan®
Posts: 737
Joined: Sat Sep 26, 2015 8:58 pm
3D Software: Cinema 4D
Contact:

Re: Camera Response Functions

Post by Originalplan® » Tue Jul 12, 2016 8:53 pm

Thanks Eneen.

Eneen
Posts: 165
Joined: Thu Jan 21, 2016 9:32 am

Re: Camera Response Functions

Post by Eneen » Tue Apr 04, 2017 8:20 pm

Here is agfapan-apx-400CD green channel chart. As you can see importing camera response is quite easy.
It might be possible to create function in calc that interpolates e.g. 10 points into 1024 points with spline like this:
https://forum.openoffice.org/en/forum/v ... php?t=4574
Idea is to create spreadsheet with preview chart where you enter mentioned 10 values and get 1024 ready to put into file.
Attachments
agfapan-apx-400CD_G.jpg

User avatar
Originalplan®
Posts: 737
Joined: Sat Sep 26, 2015 8:58 pm
3D Software: Cinema 4D
Contact:

Re: Camera Response Functions

Post by Originalplan® » Thu Apr 06, 2017 2:51 am

Thanks Eneen!
Glad you have kept this question in mind!

Will check this out. Actually i managed to pull data inside Indigo from Lattice.
https://lattice.videovillage.co Not perfect still, but **kinda works.
Will have a look again if i find a bit of time.

User avatar
lycium
Developer
Posts: 1194
Joined: Wed Sep 12, 2007 7:46 am
Location: Leipzig, Germany
Contact:

Re: Camera Response Functions

Post by lycium » Fri Apr 07, 2017 1:08 am

If you have a good source of data for response functions and LUTs, it shouldn't be too difficult to add support for it in Indigo, especially now that we have colour curves (which is pretty much the same thing).

Eneen
Posts: 165
Joined: Thu Jan 21, 2016 9:32 am

Re: Camera Response Functions

Post by Eneen » Fri Apr 07, 2017 1:33 am

One of sources can be adobe dcp profiles from cameraraw (lightroom), available also with dng converter. Although dcp beside standard uses film-like curve that keeps hues constant. But I don't know how to extract tone-curve from dcp.

Post Reply
7 posts • Page 1 of 1

Who is online

Users browsing this forum: No registered users and 3 guests