IPR-F9-F10 differences

Wed Apr 08, 2015 1:17 pm

Hi Juanjgo,

Here is an issue which made me crazy last night.

I have a color difference rendering with ipr, F9 or F10
ipr and F10 are the same.
But colors appear much saturated with F9.

Color space set to linear.

I have rendered the 3 versions exactely with the same config.
octane last beta, then tried with 2.16

I send you 3 exemple pics. The scene is just 3 primitives lighted with an hdri direct lighting diffuse. I have tried with pathtracing, same issue.

Wed Apr 08, 2015 1:48 pm

Those 3 images are exactly the same, I suggest a regular visit to oftalmologist.

Wed Apr 08, 2015 2:27 pm

I don't see a difference either

Wed Apr 08, 2015 2:35 pm

I can't see any difference. Perhaps you have a little difference between the IPR and the F9/F10 due to sometimes users have some kind of color correction in the OpenGL at drivers level, in the NVidia control panel, or even because you have custom gamma settings for the IPR in the imager node ... but F9/F10 should always render the same image.

-Juanjo

Wed Apr 08, 2015 5:08 pm

If you put them in a stack in PS and turn on/off layers, they are completely dead on the same. Did you arrive at this discrepancy while having side by side?.. Monitor warmth/brightness can vary (sometimes greatly) at different angles and different areas of screen, and having side by side is not advised, for comparisons.

Wed Apr 08, 2015 5:25 pm

I agree, look the same. I think maybe as mentioned there is something in OGL being adjusted on the fly from Nvidia...or two monitor setup has color variation. I know my two monitors won't calibrate to the same exact color.

Fri Apr 10, 2015 7:55 am

Hi,

Ok, I think you are right. The 3 images are the same. But this is a crazy think.
I have tryed with a color picker and they are the same. I have tried to do an anim of the 3 images and they are the same.
BUT. If I visualise it in windows previewer, the F9 images is always different.

I post some scene capture to illustrate this.

Why? and why always the F9 rendering?

Fri Apr 10, 2015 8:25 am

Can you please send to me one of this scenes?

-Juanjo

Mon Apr 13, 2015 2:42 am

In the original post the F9 is more saturated. Can't understand why no one else can see it.

Mon Apr 13, 2015 3:01 am

Some time ago I found a similar problem. F10 looked different from F9 if it was saved by the LW native file system. Then Juanjo suggested I use the Octane file saver instead, which is the Render Passes node. You don't have to use the passes at all, just the Main output. After that F9 & F10 always looked the same.