Author Topic: Saving render. !question!  (Read 4717 times)

2013-09-27, 10:39:21

Cherkes888

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All what i save, have gamma 1.0.
I use "override 2.2" , but it do not help (((   In frame, picture is in gamma 2.2  but ufter saving 1.0

Using 13 max and Corona Alpha 5.

Help!

2013-09-27, 10:56:42
Reply #1

Dexyd

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How are your other Gamma settings? Normally it should look something like this and when saving you use "use system default gamma".
(At least thats how i've set it up and i don't have gamma issues)




2013-09-27, 11:30:23
Reply #2

maru

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I always use this config and it works fine with .jpgs but when I save a .hdr (or .exr, I'm not sure, one of them) it comes out with doubled gamma correction so the only way to fix this is to set output gamma to 1.0. It's kind of annoying, is there any proper way of saving 32-bit files with proper gamma?
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2013-09-27, 11:42:41
Reply #3

Ludvik Koutny

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I always use this config and it works fine with .jpgs but when I save a .hdr (or .exr, I'm not sure, one of them) it comes out with doubled gamma correction so the only way to fix this is to set output gamma to 1.0. It's kind of annoying, is there any proper way of saving 32-bit files with proper gamma?

Up to Max 2013, this is actually one of two officially correct workflows. There is no way to make it any different. That is just how Autodesk made it.

There are two options:

If you often save low dynamic range formats, and only rarely EXRs (Means that EXR workflow is not your primary), then you have output Gamma at 2.2, and you have to manually override output in save window to 1.0 when saving HDR formats.

If you often save HDR formats (Use EXR workflow), then you have output gamma set to 1.0, and you manually override output in save window to 2.2, when saving LDR formats, like Jpeg.


In Max 2014, this should be handled automatically, as input and output gamma is not present in settings anymore, and when saving, gamma is set according to selected format. Unfortunately, this seems to be working correctly only for integrated renderers (MR, Scanline, iRay), because 3rd party renderers often use their own VFB, which is not compliant with the new output standard yet.

2013-09-27, 13:51:46
Reply #4

maru

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Thanks. This can be a real pain in the ass if you forget to change it...
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2013-09-27, 20:15:43
Reply #5

lacilaci

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Thanks. This can be a real pain in the ass if you forget to change it...

Yes, if you screw up LDR render. cause you cannot do much about jpeg in post...

But if you save .exr with 2.2 gamma and your "post processing software of choice" automaticaly assumes 32bit format comes in linear space and adjusts gamma again... Then you can still manualy inverse gamma with .454 value...

But I'd say, always render to 32bit format and always as linear...