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Using Create Vraycamera button has distorted focal length

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  • Using Create Vraycamera button has distorted focal length

    If I use the Toolbar button to create a VrayPhysCamera from a perspective view, the camera view is distorted. The Focal length looking now is at 152400.0 mm and there does not seem to be a way to recover this. Changing values has no effect. I don't remember this being like this before the Vray 5 hotfix.



  • #2
    It's not a recent thing. It usually happens when creating a VRayCamera from in either Top, Bottom, Left, Right, etc. views since the camera tries to adapt to a non-physically accurate view.
    Aleksandar Hadzhiev | chaos.com
    Chaos Support Representative | contact us

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    • #3
      No, this happens every time I try from regular perspective views. Does it work for you?

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      • #4
        Yes, it works fine from perspective views. Does this happen on a specific scene? Could you attach it here?
        Aleksandar Hadzhiev | chaos.com
        Chaos Support Representative | contact us

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        • #5
          When that happens, have you tried selecting the camera target and moving it away from the camera (i.e. into the view)?
          Lele
          Trouble Stirrer in RnD @ Chaos
          ----------------------
          emanuele.lecchi@chaos.com

          Disclaimer:
          The views and opinions expressed here are my own and do not represent those of Chaos Group, unless otherwise stated.

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          • #6
            I restarted Max and haven't had it happen since, but will try that next time.

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            • #7
              Im having this issue or similar as well as that im not sure the 'vert shift' is working correctly all of a sudden.

              If I create a new camera using toolbar, same as OP, it creates a cam with focal length of 5000.It also seems to double the vert shift value, if i repeat the process you can see the camera going crazy (see video link) Restarting max fixes it i think, but it breaks again.

              I also noticed that if change the 'free cam' to a targeted, the target line doesnt look correct in the viewport, and the target box is rotated oddly.

              Click image for larger version  Name:	image.png Views:	0 Size:	15.9 KB ID:	1164942

              Ive attached a scene.

              Video link

              https://drive.google.com/file/d/1tfw...usp=share_link


              Vray 6 hotfix 3
              Attached Files
              e: info@adriandenne.com
              w: www.adriandenne.com

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              • #8
                Originally posted by ^Lele^ View Post
                When that happens, have you tried selecting the camera target and moving it away from the camera (i.e. into the view)?
                Often happens to me for years when creating from a perspective view (although I have to tried camera from T,L,B,R) and this tip from LeLe and always seems to fix it quickly.

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                • #9
                  ignore this post
                  Last edited by francomanko; 05-03-2023, 04:12 AM.
                  e: info@adriandenne.com
                  w: www.adriandenne.com

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                  • #10
                    Originally posted by francomanko View Post

                    If I create a new camera using toolbar, same as OP, it creates a cam with focal length of 5000.
                    I also noticed that if change the 'free cam' to a targeted, the target line doesnt look correct in the viewport, and the target box is rotated oddly.
                    I have this every single day. Every second time I create a camera, this happens. I never found the cause and got used to it.
                    https://www.behance.net/Oliver_Kossatz

                    Comment


                    • #11
                      I only have a 0.0 target distance for ortho views, and i have asked we change that to a unit (whatever that may be in real units.).
                      For perspective, i couldn't (ever) repro the behaviour, and may imagine it could be due to unit setup, but in that case too i couldn't make it misbehave, no matter how skewed i set the units up.

                      Click image for larger version  Name:	physcam.gif Views:	3 Size:	361.9 KB ID:	1174767
                      Lele
                      Trouble Stirrer in RnD @ Chaos
                      ----------------------
                      emanuele.lecchi@chaos.com

                      Disclaimer:
                      The views and opinions expressed here are my own and do not represent those of Chaos Group, unless otherwise stated.

                      Comment


                      • #12
                        Fresh start of max, did it straight away..doesnt always happen...but notice how the target mode isnt on by default. (see attached video)

                        Also, and this is more likely because of newness to 3dsmax, but when i used the create cam from max's create menu, the target option isnt togglable...just greyed out.

                        Click image for larger version

Name:	image.png
Views:	290
Size:	32.6 KB
ID:	1174778
                        Attached Files
                        e: info@adriandenne.com
                        w: www.adriandenne.com

                        Comment


                        • #13
                          Originally posted by ^Lele^ View Post
                          I only have a 0.0 target distance for ortho views, and i have asked we change that to a unit (whatever that may be in real units.).
                          it's shown in my gif how to fix it: set camera target distance to anything but zero while the fix is implemented.
                          Lele
                          Trouble Stirrer in RnD @ Chaos
                          ----------------------
                          emanuele.lecchi@chaos.com

                          Disclaimer:
                          The views and opinions expressed here are my own and do not represent those of Chaos Group, unless otherwise stated.

                          Comment


                          • #14
                            Interesting, I had the same problem today. My Vraycam FOV was 5000 and changing the values did nothing. Multiple cameras had this issue. The software crashed on the weekend, so maybe the cameras got corrupted.
                            What I did was select the broken cameras, save select and create a new file. Then I went into this new file and the cameras worked properly. So I merged them back into the scene and deleted the old corrupt ones. Problem solved, for now. I use Vray 5, 2.3

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                            • #15
                              There is some more weirdness, too. Some values from an old VrayCam are carried over if you create a new one. Values like vert/horizontal shift/tilt.
                              https://www.behance.net/Oliver_Kossatz

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