Jump to content

Moire


Francisco Valdez

Recommended Posts

I've never gotten a moire effect on any of my footage but that's because my art department and me are overly cautious about it. The thing is I want stop being cautious and start being conscious about it.

 

I would like to know...

 

What should I avoid? What are my limits? and does it vary from 35mm to 16mm and video?

 

If anyone can give me a hand on this I would really appreciate it.

 

Thanks,

 

Francisco

Link to comment
Share on other sites

Moire should not appear on film but may appear on the video transfer however good non-linear editing packages can remove moire so moire removal is now dealt with post-production which means that actors can wear twead again....

 

 

.... not that twead looks great but anyway :P

Link to comment
Share on other sites

  • Premium Member

Moire is a form of "aliasing", where the regular patterns in the scene (tweed, venetian blinds, screen doors) interacts with the fixed array of the camera CCDs or video display device. "Filtering" to reduce aliasing actually reduces the sharpness of the image to eliminate the fine detail causing the aliasing (Nyquist criteria). So a camera with 1920 x 1080 pixel sensors will have less than half that resolution when the normal "anti-aliasing" filtration is used.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...