‘useful’ tutorials on using Frischluft Lenscare depth of field

[Barend Onneweer]

It’s pretty straightforward. What problems are you encountering?

Raamw3rk – digital storytelling and visual effects

[Jim Bachalo]

What are the steps to do a simple pull focus?

Local is the new global

[Barend Onneweer]

Lenscare consists of two effects: Depth of Field, and Out of Focus.

Out of Focus is a fixed blur, that applies the same amount of defocus to the whole layer (although it can be animated like a regular blur).

Depth of Field is a ‘compound’ effect that can use the pixel values of another layer to feed the amount of blur.

How you’d normally use the Depth of Field effect:

You create a scene in a 3D application and render out two passes: an RGBA pass and the depthmatte. Make sure your depthmatte shows a nice greyscale.

You import both sequences as layers into a composition, on top of eachother. The depthmatte is set to invisible. To the RGBA layer you apply the Depth of Field effect, and set the depthmatte layer as the “depth layer”.

The Radius is the amount of blur – mimicing your iris radius. Set to 5 for a start, you can tweak to taste later. You should now see certain areas of the image going out of focus.

By default the focal point is set to zero, meaning that everything that’s white in the depthmatte will be sharp, rolling off to defocus towards the dark areas.

You can now select the area of the image you want in focus. There’s two ways to do that: you can set the greyscale level in ‘focal point’, or you click the ‘select depth’ crosshair and point it at the area of the image you want in focus (which will similarly set the greyscale level on the ‘focal point’ parameter.

Now you can keyframe the ‘focal point’ value and pull focus. I typically don’t need to tweak the other values although if my layer has an alpha channel I usually disable “gamma correction” in the plugin.

Hope this helps,

Barend

Raamw3rk – digital storytelling and visual effects

[Jim Bachalo]

Barend
Thanks!
Initially I’d like to see what can be done with non-3d source footage. I’ll probably need to study some depth mattes to see what I’d have to create in Photoshop first. In case you haven’t seen it check out 3rd and 7th for some of the best work I’ve seen using the Depth of Field effect
https://vimeo.com/8200251

Local is the new global

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