Archived posting to the Leica Users Group, 2001/07/26

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Subject: Re: [Leica] Photoshop 5.5 vs. 6.0
From: "Mxsmanic" <mxsmanic@hotmail.com>
Date: Thu, 26 Jul 2001 11:18:37 +0200
References: <5.0.2.1.2.20010725160435.0239d9b0@127.0.0.1> <3B5F722F.AF24F4C8@s-way.com>

Phil writes:

> You outline the subject roughly, and the selection
> snaps to the actual outline. Then you reverse
> the selection, apply gaussian blur, and you got
> whatever bokeh you want.

It doesn't work that well.  One problem is that all the blur filters take
information from all surrounding pixels.  This means that if you blur the
background behind a person in a red jacket, the blurred "bokeh" of the
background will show a red glow, from the jacket.  Real bokeh would not show
this, of course; the jacket would be sharp and red in the foreground, and the
background would be blurred behind it, with no trace of red.

Producing something that looks like real bokeh is a very, very long process in
Photoshop.  I've tried all sorts of things, and nothing ever looks convincing.

In reply to: Message from Tina Manley <images@InfoAve.Net> (Re: [Leica] Photoshop 5.5 vs. 6.0)
Message from Phil Stiles <stiles@s-way.com> (Re: [Leica] Photoshop 5.5 vs. 6.0)