Dragon Purple Fringe or CA? .R3D

[Scot Yount]

Anybody have any idea what is going wrong here?? Got this kooky purple flare in the middle of the lens that moves when the focus moves as well. Here are two examples in still shots of the computer monitor.


Drop Box links to .R3Ds to show movement.

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The lens is an old Nikkor 24mm f2.0. Was shooting wide open.

 

[John Marchant]

Shooting screens almost always results in aliasing like this. Tricky to shoot around.

 

[David Battistella]

Yup, that is aliasing from the screen as John has mentioned.

The lens might have a bit to do with it but mostly it's the screen itself that creates the aliasing/moire pattern.

David

 

[Scot Yount]

I sort of thought it was the screen, except that when I rack focus with the lens the aberration moves with the focus, which is the part that confused me