KeyShot Forum

Technical discussions => General discussion => Topic started by: hansoej on October 24, 2013, 01:24:41 PM

Title: KS4.2.35 - Renders appear darker than real time window
Post by: hansoej on October 24, 2013, 01:24:41 PM
I am experiencing an issue that I have seen elsewhere on the forum but no solution that I've found -

Model looks great in realtime, placed 10 images in the queue - identical except for a single color change on the main body of the model. Hit process queue - renders 1 & 2 are perfect, but as I watched the queue process 3-10, they were much, much darker. Now if I try to process a single image (realtime still looks good, no performance mode or anything) even a single render appears significantly darker.

Has anyone experienced this?

Thanks!
Title: Re: KS4.2.35 - Renders appear darker than real time window
Post by: hansoej on October 24, 2013, 01:30:14 PM
Interestingly, I closed the file and reopened to see if it would fix - and now the realtime render appears dark, identical to the renders.
Title: Re: KS4.2.35 - Renders appear darker than real time window
Post by: thomasteger on October 24, 2013, 02:04:37 PM
Very strange. We will investigate.
Title: Re: KS4.2.35 - Renders appear darker than real time window
Post by: PhilippeV8 on October 24, 2013, 10:40:28 PM
I recently had the opposite.  I had a file with a 0 brightness hdri set up and 2 light sources.  After saving and closing, the next day my scene opened well overlit.  Had to reduce the light brightness from 1 to 0.01 to get it back to what it used to look like.
(KS4.0.74 / Point Light IES Profile)
Title: Re: KS4.2.35 - Renders appear darker than real time window
Post by: Chad Holton on October 25, 2013, 04:43:29 AM
Either of you guys using viewsets?
Title: Re: KS4.2.35 - Renders appear darker than real time window
Post by: PhilippeV8 on October 26, 2013, 01:38:57 PM
Not me, never used them.

I should read up on that in the manual soon to find out exactly what they are and what they do.
Title: Re: KS4.2.35 - Renders appear darker than real time window
Post by: feher on October 26, 2013, 03:19:41 PM
Quote from: PhilippeV8 on October 24, 2013, 10:40:28 PM
I recently had the opposite.  I had a file with a 0 brightness hdri set up and 2 light sources.  After saving and closing, the next day my scene opened well overlit.  Had to reduce the light brightness from 1 to 0.01 to get it back to what it used to look like.
(KS4.0.74 / Point Light IES Profile)
Hi P
You need to set your model units. Go to preferences and click on model units. Find the one that makes the light the way you wanted it. You should be good after that.
Tim
Title: Re: KS4.2.35 - Renders appear darker than real time window
Post by: jhiker on October 28, 2013, 02:18:13 AM
Seems like model units can have a huge influence on the environment, ground plane, lighting and texture maps but I must say I rarely alter this from the default 'none' because I don't really understand when it might be influential.

When I export a model from CAD (GeoMagic) as a KS 'bip' and open in KS should I routinely change the model units to match the CAD units?
Is 'model units' only relevant when you 'Import' a model?
Does KS take the units from the CAD model when you 'Import' a STP for instance?
I'm confused and I'd like to understand a bit better...  :)

I see it cropped up again in this  topic...
http://keyshot.com/forum/index.php/topic,6895.0.html
Title: Re: KS4.2.35 - Renders appear darker than real time window
Post by: thomasteger on October 28, 2013, 06:25:41 AM
Geomagic Design fka Alibre is not exporting the file respecting the units from the CAD model. They have not updated their plugin with our latest API. For now, you would have to do this manually. NONE actually assumes a scale in Meters.