32bit EXR How to

[Guybrushtrep]

Hello,

Could someone please explain me how the process is of using exr 32b inside corona?
I mean from start to the end: how to the img should look like, to how to save the file correctly with all the passes? Also would be magnificent to know how to use it afterwards inphotoshop. How to open then file correctly? Do i need openexr? How should i control the exr to achie e what i want? And so on...

Thanks in advance!

[DanGrover]

If you're refering to rendering and output, there's nothing specific to Corona.

Simply set your render output to .exr and change the Bit Depth in the settings to 32-bit (Float - NOT Integer). That's it. If you want Render Elements, personally I've never seen the point of having them stuck in a single, multi-channel EXR. It makes it easier to update renders if a comp but imo it's not worth the hassle and potential for problems.

As such, you just open up the EXR in PS like you would any other image. If it's not multi channel, you don't need any plugins.

[Guybrushtrep]

Thanks DanGrover it´s pretty easier than i thought!

I was saving as Integer that´s why i only saw a white picture.

Just opened the EXR in Photoshop, all is well.
My doubts now are:
-How do you post product the exr image now? Using PS standard HDR Tuning or any other cool plugin?
-What´s the Post p process overall and in the end how to return to JPG or PNG correctly?
-For the raw image should i be careful with something? Like making the image darker first and tune after in post p, or something like that?
-Regarding saving exr compression, what option should i select?
-And which one? RGBA or RGB? 2,2 or 1,0? If i save 1,0 i see the image exactly like the VFB, if i save 2,2 i see a very washed out img.

Cheers

[ktulu]

Hi,

maybe this tutorial will make it clearer for you:
http://viscorbel.com/linear-workflow-and-gamma/

He uses Vray, but the postproduction part is the same really.