8 Replies Latest reply on May 23, 2018 11:06 PM by Nete Jakobsen

Renders have light grey background instead of white

Blake Pomeroy Apr 25, 2018 3:37 PM

I have noticed that when rendering images in SW Viz 2017 with a white background, the renders keep resolving with a light grey background instead. Anyone having a similar issue? I thought maybe it was the ground shadow, but i turned it off and ended up with the same result.

My settings are shown below.

Here is a sample of the rendering result( the background was set to white as shown above, nothing edited except cropped)

Re: Renders have light grey background instead of white

Mike Lee Apr 26, 2018 8:51 AM (in response to Blake Pomeroy)

Hi Blake , can of worms that one fella. What ever render package you use colours will always look different depending various things such as gamma, colour space, viewing angle even light in the room.
Color spaces in color management.
Looking at your render I may see a light grey on my screen, move my head slightly and I see white.
Don't worry unless its for a client demanding certain colouring requirements.
The Blue and yellow look great by the way !
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- Re: Renders have light grey background instead of white
  
  Blake Pomeroy Apr 26, 2018 9:32 AM (in response to Mike Lee)
  
  Hey Mike,
  
  Thanks for taking the time to respond. I am familiar with those factors affecting the appearance of the image. The issue is that this outcome never used to happen in previous versions of Solidworks Visualize or Bunkspeed. The issues began when we started using 2017. If I bring the image into Photoshop and eye drop the background it is showing as a 1-2% grey, not white like it should be.
  
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  - Re: Renders have light grey background instead of white
    
    Mike Lee Apr 26, 2018 9:37 AM (in response to Blake Pomeroy)
    
    Hi Blake
    Maybe the program is doing a little colour correction under the hood. Maybe try tweaking the gamma up to 1.2 or 1.3 and give that a try. I remember doing something similar with PV360.
    
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    - Re: Renders have light grey background instead of white
      
      Rob Rodríguez Apr 26, 2018 10:01 AM (in response to Mike Lee)
      
      Why not just save your render with the alpha channel and add your background color in PS. Then it will be perfect every time and can be changed without a re-render.
      
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Re: Renders have light grey background instead of white

Peter Hildebrandt Apr 26, 2018 1:22 PM (in response to Blake Pomeroy)

Use a white Backplate for your Background.
It will be always white, regardless for the lighting.
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- Re: Renders have light grey background instead of white
  
  Blake Pomeroy Apr 27, 2018 8:00 AM (in response to Peter Hildebrandt)
  
  Yea, I have used the alpha channel option as a way to fix it. The Backplate works well if i want to save out as a jpg and have the pure white background.
  
  I just feel like if you set the environment to white it should be white. Seems like something is wrong with the program.
  
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  - Re: Renders have light grey background instead of white
    
    Nete Jakobsen May 23, 2018 11:06 PM (in response to Blake Pomeroy)
    
    I had the same issue when I started with Viualize, but now I just use a white jpg backplate when I start my projects.
    I then usually export projects with the beauty, floor shadow and object passes as TIFF (ofc with the Alpha Channel). This makes it so easy for post processing in Phosothop, and gives you full control of your background and shadows.
    
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- Re: Renders have light grey background instead of white
  
  Rich Fagioli Apr 26, 2018 5:17 PM (in response to Peter Hildebrandt)
  
  Peter is correct. Build your backplate to your correct dimension, fill it with #FFFFFF white, and it will always be white.
  
  That is, until you dim the brightness of your environment below some threshold.
  
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