Announcement

Collapse
No announcement yet.

Vray RT vs Vray inconsistencies

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Vray RT vs Vray inconsistencies

    Ok, so I tried to find some answers to why Vray and Vray RT sometimes differ quite alot in appearance. I found some threads discussing the issue but they strayed off into "gamma land" and left me even more confused. So I did some investigation and found the following. I'll try to let the images do the talking to avoid confusion. But the basic guideline to sync up vray and vrayrt seems to be to leave "linear workflow" unchecked and since it seems to have no effect on the vray rendering whatsoever this shouldn't be a problem.


    Click image for larger version

Name:	1.jpg
Views:	1
Size:	250.0 KB
ID:	869418Click image for larger version

Name:	2.jpg
Views:	1
Size:	242.6 KB
ID:	869419Click image for larger version

Name:	3.jpg
Views:	1
Size:	243.4 KB
ID:	869420Click image for larger version

Name:	4.jpg
Views:	1
Size:	242.9 KB
ID:	869421Click image for larger version

Name:	5.jpg
Views:	1
Size:	238.4 KB
ID:	869422


    Please don't post in this thread unless you can prove what you're saying.

    A couple of things to think about:
    - Do comparisons between activeshade and max's own vfb first. Since they should always get the same gamma treatment. What's right or wrong is a separate problem.
    - Observe that png-files gamma value is read inversely, when using the option "use images own gamma" (works correctly in RT though, very confusing). It also creates problems when saving png files, so do your comparisons in max with the vfbs open.
    - Switching the gamma settings in preferences can cause the individual images gamma settings to change ("use images own gamma", "use system default gamma" and so on...).
    - Don't trust the activeshade to update correctly. Close it down and reopen after you change settings to double check.
    Last edited by David H; 25-01-2010, 03:40 AM.

  • #2
    ...the remaining images


    Click image for larger version

Name:	6.jpg
Views:	1
Size:	239.1 KB
ID:	842759Click image for larger version

Name:	7.jpg
Views:	1
Size:	243.1 KB
ID:	842760Click image for larger version

Name:	8.jpg
Views:	1
Size:	249.9 KB
ID:	842761


    The Scene File:
    I created a 127 gray image in pshop and saved it out as a png, bmp, tiff and tga. The boxes are assigned materials with these image files and corresponding settings. The lighting is a vraysun and default vray sky.
    Attached Files
    Last edited by David H; 25-01-2010, 04:47 AM.

    Comment


    • #3
      You can compress the .max file to a .zip file and then attach it.

      Thanks for the images; they will certainly help us to fix such issues.

      Best regards,
      Vlado
      I only act like I know everything, Rogers.

      Comment


      • #4
        Originally posted by vlado View Post
        You can compress the .max file to a .zip file and then attach it.

        Thanks for the images; they will certainly help us to fix such issues.

        Best regards,
        Vlado

        Ok got it to work now, I guess my first zip file was to big. Thanks.

        Comment

        Working...
        X