OTOY Forums

Can anyone shed any light as to why im getting such a large difference between my live view and my final picture viewer renders here? Ive never seen such a big difference between the two before.

Hi,

What's the context? ACES color-pipeline, I presume?

Anything related to the Cinema 4D PV's "profiling option" in its upper menu?
I've got a screenshot of it from here, although it's usually the "opposite result".


The more information, the easier it is for other to assist on the troubleshooting.

No color pipeline, all default settings, just boring old 8bit srgb renders.

I've narrowed it down, the image brightness changes as the render resolution changes (!?) My guess is that the glow post effect isn't scaling properly somehow. This is naturally screwing me over as all my tests are at 1k res and my final output is 8k. So it isnt a live view vs final render difference, its a resolution difference. To reproduce, just render the project at 1k then 8k.

Good to know. Very bad issue here.

Yes, this is an old an well known limitation of Post Effect.
It is not smart enough to take into consideration the resolution scaling.

The only workaround that I know is to save the mid/low res Post Effect as separated AOV, then gradually over scale it to the final resolution

ciao,
Beppe

Or, consider doing the bloom/glare in post, unless the intention was to output a "SOOC" file from Octane, ready for viewing.

elsksa wrote:Or, consider doing the bloom/glare in post, unless the intention was to output a "SOOC" file from Octane, ready for viewing.

Do you know any other software than AE or Fusion that create good looking such effects ?

SSmolak wrote:

elsksa wrote:Or, consider doing the bloom/glare in post, unless the intention was to output a "SOOC" file from Octane, ready for viewing.

Do you know any other software than AE or Fusion that create good looking such effects ?

Somewhere on the internet, there is an an exponential bloom file freely available for Blender's compositing tab.

I'd say any "comp' software" as long as it has an *exponential* bloom or closely equivalent.

What about preview post effects in Octane Live Viewer using lock resolution mode at 100% ? It should render them using final resolution set in render settings.

SSmolak wrote:What about preview post effects in Octane Live Viewer using lock resolution mode at 100% ? It should render them using final resolution set in render settings.

Thats what we'll probably do from here. Get it close normally, then do a final full res, but scaled down LV check to get it back where it was. Its just annoying that well need to then toggle this back and forth during subsequent changes.