z-depth element

[vermu]

Hi,

I am trying to render z-depth element so that center object is in focus and foreground and background is out of focus. How should I set up the zdepthmin and max values? I am getting the result that backgroud is out of focus and foreground and center is in focus.

[sandykoufax]

Try to use camera environment range setting or clipping setting to know which value is good.

[vermu]

But is it possible to get z-depth ranging from black to white and back to black. It would be easy if z-depth had min center and max value. Is it possible to get with min and max value. Now I get z-depth from black to white or white to black.

[joconnell]

It depends on what filter you're trying to use your Zdepth with - most actual depth of field filters expect a ramp from one colour to another and allow you to pick where along the gradient is your sharp area - from that point forwards and backwards it'll start getting gradually softer.

If you're using something like a compound blur where the strength is controller by black to white values then your best bet might be to make a uvwmap over your entire scene and put a custo white / black / white gradient in to it, or use the falloff map set to distance blend and have both ends of the mix curve flat with a peak in the middle.

[IVOR_IP]

"If you're using something like a compound blur where the strength is controller by black to white values then your best bet might be to make a uvwmap over your entire scene and put a custo white / black / white gradient in to it, or use the falloff map set to distance blend and have both ends of the mix curve flat with a peak in the middle. "

Do this in post, use Gradient-Map adjustment layer (PS) or any Curve tool in software of choice to remap your gradient.