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Depth Map

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  #1  
Old 05-09-2005, 05:07 PM
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Doug Nelson Doug Nelson is offline
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Post Depth Map

Use the Lens Blur filter in Photoshop CS with a depth map to realistically simulate depth-of-field [details]
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Old 05-09-2005, 08:06 PM
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Thanks for a great, clear, easy Tutorial on a procedure I've always have tried in other ways but have never been completely satisfied with my results!!!
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Old 05-10-2005, 04:21 AM
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Good one Doug. I wonder if I'll be able to tweak this so as not to use the Lens Blur Filter (so that it's not PS specific)?
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Old 05-10-2005, 05:23 AM
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I suspect it's VERY CS (or CS2) specific.
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Old 05-10-2005, 05:33 AM
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Hi Doug,

I've been 'playing' with your Tutorial and it works just great!

One question .... is there a particular reason for creating a gradient Layer first and copying it into a new alpha channel?

I'm asking this because I tried the gradient directly on a new alpha channel (eliminating the gradient Layer step) and it seemed to work perfectly ....
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Old 05-10-2005, 07:39 AM
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The only real reason is that so the two masks could later be combined using the blend mode. Plus, it's hard to paint a mask based on an image on it's channel. But other than that, working directly on a channel is fine.
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Old 05-10-2005, 07:43 AM
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Got it!!!

Thanks Doug!
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Old 05-10-2005, 09:55 AM
Ken Fournelle Ken Fournelle is offline
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Very nice Doug, this will come in very handy!

k
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Old 05-10-2005, 10:20 AM
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Great job Doug, played around with combining the masks with blend mode, a lot of possibilities.
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Old 05-10-2005, 10:43 AM
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Lens Blur is also a pretty decent way of doing DOF for 3d. Do a regular render and z-depth render. Then use Lens Blur.
Definitely a lot faster than having your renderer render the DOF.
Well, if the DOF that you want isn't terribly critical.

I'm not sure, but you might even be able to trick Lens Blur into doing motion blur (also render heavy).
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