William F Pokorny <ano### [at] anonymousorg> wrote:
> On 11/14/23 07:08, Mike Miller wrote:
> > The tan/yellow areas in the hillside?...that's HDRI BG.
>
> Using exr ?  There is a bug where the HDRI has values which exceed a
> half float(a). IIRC. Values end up as HUGE_VAL and you get artifacts
> that basically won't go away with normal -ish tweaking.
>
> Bill P.
>
> (a) - POV_Ray's current exr support only works with half float (16 bit)
> exr files and many .exr files found today on the internet use the full
> 32 bit float format and those, sometimes, have values > 16 bits float max.

Now that you mention this, I've been getting some weird and sporadic lighting
'blow-outs' depending on what objects I have hidden when using a 32 bit HDRI
background. I will drop it to 16 bit and report back.
Thanks,
Mike.

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