• Maxon Cinema 4D

  Problems – Flickering specular and unable to change its shape

  Posted by Mio Tanaka on July 15, 2018 at 3:35 pm

  Hi, this might be a noob question and I have two problems – Firstly, I’ve been playing around with a Sketch and Toon model and animated it. However, the specular flickers. I’ve tried shifting the flickering object’s position, but it didn’t do anything.

  Secondly, I want to change the shape of the specular/reflection, so I made a rectangle area light. But the specular/reflection shape is still round.

  Here are the render and the project file for reference. If you could help me out with fixing the issues, that’d be great.

  

  Project file:
  https://goo.gl/jdzDRm

  Thanks in advance!

  Mio Tanaka replied 7 years, 9 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Steve Bentley

  July 17, 2018 at 12:35 am

  This may be an artifact from Sketch and Toon (artifacts are common with S&T) but often when you have a perfectly flat object, the reflection it produces is from one pixel on the reflected world or sphere. A small move of either the object, the camera or the reflecting object will produce drastic changes in the reflection. Try adding a little bump from a very large noise and see if that fixes it. Settings like: global size of the noise set to 1000 and the bump strength set to 2 usually do the trick.
  It might also be the top layer of the monitor being at the same level as a lower layer, so they bounce back and forth as the system tries to figure out which should be on top.
• 

  Mio Tanaka

  August 5, 2018 at 7:41 am

  Hi, Thanks for your advice. I tried adding some bump, but it didn’t work. I shifted the position of close objects, so it wasn’t the cause either. I ended up exporting a pass for the screen.

Reply to this Discussion! Login or Sign Up