Wideangle scenes & mirrors

[JPost]

Hi,

I am using SketchUp Pro 2018 and Twilight Render Pro V2.
I tried to render one wideangle scene and mirror is not working as it should.

Mirror is in right bottom corner.
This mirror shows reflection as 35mm view angle not 80mm. Bed is too big and table also.

WideAngle-HD1-2.jpg (1.03 MiB) Viewed 8200 times

Maybe someone know how to fix it?

Thanks!

[Fletch]

Very Strange - did you try applying "Template>Architectural Glass>Mirror" ?
What is the FOV setting for your camera?
Can you post small test scene in .skp format here demonstrating behavior?

It works with 55 and 70 degree FOV.

[Fletch]

here's a mirror at 90 FOV

[JPost]

Hi,

For mirror i used material "mirror01" and template is "architectural glass - mirror" settings are default.
I tried different rendering methods(medium and interior(progressive)) but result is still same.

Made 3 different versions of FOV- 50, 70 and 90 deg.
FOV 50

FOV50.JPG (197.74 KiB) Viewed 8181 times

FOV70

FOV70.JPG (210.18 KiB) Viewed 8181 times

FOV90

FOV90.JPG (201.42 KiB) Viewed 8181 times

[Chris]

Do you have a reference photo taken with a wide field of view lens with a mirror on the extreme periphery? I'd be curious to see what it shows, because I don't think the images are wrong. I agree they look strange!

[Fletch]

All lines terminate at same vanishing point.
This is correct.
Normal photographic lens has spherical distortion. Digital photographic lens has no distortion (ideal perspective).

[JPost]

Hi,

I made little test - whole right wall is mirror and now can see better that weird distortion.
FOV 85deg.

FOV85_wallmirror.JPG (309.08 KiB) Viewed 8151 times

[Chris]

But with unnaturally wide fields of view, you get distortions as you approach the edge. That's just the nature of the projection. Notice on the left side, how the cabinet stretches as you approach the edge. The right side is doing the exact same thing, it just happens to be a reflection.

[Fletch]

The mirror is correct.
If you want it to "fade away" you could angle the mirror very slightly so that it's meeting the adjacent wall at 91 degrees or something other than 90.

You should try testing this in a very simple test room, to speed up experimentation/test rendering, that's a more professional workflow.