strange effect appearing while using fade animation

[kubafootbag]

Hello everyone,

Today I tried to render simple animation using combined fade animation with movement of other parts. I did not expect any problems there but suddenly I noticed some square-shape shadow appearing on the ground.

Please see the link below:
https://youtu.be/Y9rprtSQ6GQ

Do you have any idea how to get rid of this strange effect? why has it happened like this?

Thank you,

Kuba

[TpwUK]

Looks like you need a ground plane adding - Why you're seeing the square shape i have no idea.

Martin

[LayC42]

 these strange squares appears if the ground size is too large.
A ground plane (edit -> add geometry -> ground plane) will solve this problem.

And then as render settings max samples mode will render every frame with the same quality.

[kubafootbag]

Thank you guys for your replies.

Actually, I have added ground plane already. I tried to change its size but nothing changed, squared size shadow is still there. I rendered animation using max samples option, it didn't help.

Any other ideas? I am quite sure it's coused by fading option, while changing opacity either to 0 or to 100% everything is ok...

[HaroldL]

I found the model on GrabCad and created a Fade animation similar to yours. I did not see any of the square shadowing that you experienced. I even tried with every HDRI to see if that would make any difference. It didn't.

What format did you use STEP or IGES? I down loaded the model in STEP format. I might try the IGES and see what happens with it, though I don't know why the format would make any difference.

[guest84672]

The file format has nothing to do with it because it is converted to polygons upon import.

Any chance you can share the scene?

[kubafootbag]

The scene itself is just imported model (in fact, it is from GrabCAD, I imported STEP file) and added groundplane. I applied some materials in standard overhead array_2k enviroment.

Any other ideas what's wrong here?

[Chad Holton]

What version are you using exactly (e.g. 5.1.234)? Please send the scene to: [email protected]

[kubafootbag]

Thank you guys for the support. Honestly, I don't have time to go deeper into it, I give up. I changed scenario and now housing is fading down to 0% and everything's all right. Maybe there's something wrong with model, hard to say. I use 6.0264 version.

[guest84672]

Please make sure to update to the latest version of KeyShot. Build 6.2.105 was posted  today.