Author Topic: How to save Exr and retain dynamic range In Post ?  (Read 794 times)

2021-09-15, 16:47:55

arqrenderz

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Hi im looking for a way to save the exr in 32 bits and retain the exposure values just like the frame buffer, so far i just get a very dull image if i want to change the exposure using PS in 32 bits, its like changing an LDR image. I Know Corona CXR but the file sizes are so big...
Also tried inside davinci resolve and its the same..
Im saving the image as *.exr Full Loat 32 Bits  RGBA, have also tried integrer 32 bits and that comes corrupted..

2021-09-15, 17:01:16
Reply #1

TomG

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Bear in mind that Photoshop is terrible at handling EXRs. Be sure to use the free EXR-IO plugin to load them into PS.
Tom Grimes | chaos-corona.com
Product Manager | contact us

2021-09-15, 17:13:41
Reply #2

arqrenderz

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Yes, im using it to load exr with layers. Also using Davinci resolve but the result is the same...
Im attaching a picture to show what im looking for, I saved an underexposed image and then use exposure to correct it inside Davinci resolve, the result is a whased out image, and on the right its corona VFB with the changed exposure.
Its an exr 32 bit Full Float

2021-09-15, 17:34:38
Reply #3

dj_buckley

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Could this be to do with the fact your saving the Exr with HC set to 8 and Contrast set to 3?  i.e. burning those settings in on save and thus losing some of the original dynamic range, or does that not apply to EXR's?