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Why is the reflexion bigger?

myotherworldmyotherworld Posts: 615
in The Commons

Hi All 

I posted an image some time back and one of the things that bugged me, was that the reflexion of the motorcycle was bigger than it should have been?

As I plan on doing more city type renders, with big windows. i dont want this to happen again.

So anyone know why and more to the point how I can stop this.

i have lookied in the material setting . But for the life of me cannot see anything that would do this. 

As always any help is always welcome.

hope your having a good weekend

Comments

  • FirstBastionFirstBastion Posts: 7,822
    edited April 2023

    the actual shape of the glass (reflective surface)  can affect the reflection.

    Post edited by FirstBastion on
  • felisfelis Posts: 4,606
    edited April 2023

    A reflective surface in Iray should act similar to a reflective surface in real life.

    You need to add some images of what you are seeing.

    Post edited by felis on
  • myotherworldmyotherworld Posts: 615
    edited April 2023

    sorry would have been a good idea

    the window is/should be flat.

    Post edited by myotherworld on
  • felisfelis Posts: 4,606

    That looks like you have used an orthogonal camera.

    Do you have that scene, and if what is your camara settings?

  • myotherworldmyotherworld Posts: 615
    Thanks. I will have a look
  • AscaniaAscania Posts: 1,855

    https://www.photographymad.com/pages/view/telephoto-lenses

    Pay close attention to the section headed "Perspective Compression".

  • myotherworldmyotherworld Posts: 615

    Thank you for the link, a very interesting read.

  • Silent WinterSilent Winter Posts: 3,762

    If the window is flat but connected by polys to something else (depending on shape) AND the surface setting is set to 'smooth: ON' then it'll act like it's curved rather than flat.

    Try it with plane versus a cube.

    Often for this kind of surface, where it's a single flat poly, you should turn smoothing off in Surfaces to get a non-distorted reflection.

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