Saving floating point image gets clamped

[Guillermo Leal]

Trying to save an exr or hdr image either trough the frame buffer or the render dialog but the image and/or elements get clamped to 1.0
not sure if this is a bug or i'm missing something.

thanks,

Guillermo Leal.

[Guillermo Leal]

well i did some further testing and the issues is if you have higher then 1.0 on the Highlight compression in the color mapping tab the image when saving it will get clamped to 1.0 even do on the corona frame buffer shows pixels much higher then 1.0.

is this a known bug?

Guillermo Leal.

[Polymax]

No bug here.

[Guillermo Leal]

You are right. the file i was having problems was an old one maybe it came from max 2012-13 that i opened in max 2014 and started to work with corona, i have merged the file into a new scene in 2014 and now it saves correctly.

Guillermo Leal.

[Ludvik Koutny]

It is not a bug. Highlight compression is tone mapping. It really physically compresses highlights. You always need to render linear output, if you want to retain full HDR information for post processing. That means leaving highlight compression at default.

Of course, it would be possible to save output without tonemapping, but then users would save something completely different than what they see in framebuffer. So say exterior during sunny day could become just flat white burned surface without highlight compression.

That being said, there should be an option to save images without tonemapping in future...