KeyShot Forum

Technical discussions => General discussion => Topic started by: wabbit on May 02, 2012, 11:24:55 PM

Title: What's going on with my background image? Black dots in the rendering
Post by: wabbit on May 02, 2012, 11:24:55 PM
Hi,

I can't show the full image on here right now, but I keep getting these black dots on my backplate image. Why is this? I used this same backplate yesterday in a different rendering and didnt have any trouble with it.

The back plate was made by rendering some lofted surfaces in keyshot with the xray material. I then used the rendered jpeg as a backplate in my full rendering. These dots don't show up on the model, only the background. They do change shape and spacing depending on the render settings.

I attached a crop image of the dots and the full image of the background: http://imgur.com/a/dr5Cj
Title: Re: What's going on with my background image? Black dots in the rendering
Post by: JeffM on May 04, 2012, 12:32:53 PM
If you start a new project in KeyShot, then load in just this backplate, do you see the issue? Or is it only happening with one specific scene?

If you switch to another backplate in this problem scene, does the issue remain?
Title: Re: What's going on with my background image? Black dots in the rendering
Post by: wabbit on May 06, 2012, 02:08:35 PM
I'll try that.

It doesn't happen if I render as a tif. Only seemed to happen with jpeg
Title: Re: What's going on with my background image? Black dots in the rendering
Post by: awz316 on July 17, 2014, 09:48:27 PM
http://prntscr.com/43tuxv
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Hello. What I'm doing wrong? What I need to do in settings to get rid of this black spots in final render?
Title: Re: What's going on with my background image? Black dots in the rendering
Post by: TpwUK on July 18, 2014, 03:33:03 AM
Awz try setting global illumination and increase your bounces

Martin
Title: Re: What's going on with my background image? Black dots in the rendering
Post by: Rex on July 18, 2014, 06:30:30 AM
Quote from: awz316 on July 17, 2014, 09:48:27 PM
http://prntscr.com/43tuxv
http://prntscr.com/43tv09
http://prntscr.com/43tv3d


Hello. What I'm doing wrong? What I need to do in settings to get rid of this black spots in final render?

What kind of CAD file was this imported as? Are you on an AMD machine?