do HDRIs need gamna-correction?

[Richard7666]

Assuming I have a linear workfkow (colour mapping linear, gamma 2.2 in the colour mapping dropdown) and a V-ray physical camera, to light said scene with an HDRI+vray dome light setup, do I need to apply a "texture input gamma" attribute to my HDRI?

I have never done this previously, however I just read someone on CGtalk say that the HDR needs to be gamma corrected and set to sRGB. Confused. Do I need to gamma correct my HDR/EXR files for my dome light?

Could someone clarify?

[vlado]

If the HDRIs are done properly, you do not need to gamma-correct them (unless you want to do that for artistic purposes).

Best regards,
Vlado

[Morbid Angel]

In general, float images which are either 16 half or 32 full float, never need gamma correcting. As Vlado pointed out, if they are done correctly, typically a software that does proper linear output will handle that correctly.

[Richard7666]

That's what I thought. Cheers.

I'll let the guy who mislead me know his tutorial needs correctIng!