How to prevent depth of field "bleed"?

Development Cinematics & Media
,
1

Hi All

Is it possible to prevent depth of field “bleed” as you can see in this picture;

17219-scrn.jpg
17219-scrn.jpg1240×697 81.6 KB

The far transition region is about 300cm beyond the point of focus- the character’s chest. It doesnt matter if it’s 1000- the only point at which the bleed stops is when the scenery behind it is in focus (or if its darker). Obviously, if it was a real camera, that wouldnt happen- the edges would be sharp as long as the far transition region was beyond the edge.

Thanks!!

2

Hi Eric

This is the blueprint set up;

17501-scrn.jpg
17501-scrn.jpg1740×979 251 KB

The near transition region is set at 200 less than the last point of focus, the far transition region is set at 300 more than the last point of focus. The point of focus is the result of a capsule trace from the camera, at the center of the screen. I’ve tried different settings, extending both near and far transition regions, using the current point of focus etc.

Thanks for the reply!

3

Hey robbiecooper -

Can you let me know what your full DOF settings are? In particular I am wondering what your Focal Distance and Focal Region settings are at?

Thank You

Eric Ketchum

4

Hi Eric, is this effect due to screen space reflections or something?

5

Hi Eric, if I reduce Bokeh size, the double image/bleed is correspondingly smaller. Seems like there should be some logic in the engine to determine where edges are and if they are within the transition region?

6

MUCH improved in 4.5!