Archived posting to the Leica Users Group, 1997/11/20

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Subject: Re: Bokeh TEST?
From: "Patrick G. Sobalvarro" <pgs@sobalvarro.org>
Date: Thu, 20 Nov 1997 22:45:21 -0800

At 07:40 AM 11/20/97 -0800, Stephen wrote:
>If Bokeh  exists, we should be able to set up a standard test for it,
>to compare one lens against another.
>
>Does anyone know if a standard Japanese Bokeh test method already
>exists?
>
>For instance, if we have a staggered line of what's its at 5,10,15,20
>and 30 feet, vary the focus on each what's it while also varying the
>f/stop under standard lighting conditions, we should be able to compare
>the Bokeh, or the BS between one lens to another.

I think this is an interesting idea.  I don't have very many non-Leica
lenses, but I think I might borrow some non-Leica equipment so I can try a
controlled experiment.  Certainly I see differences between out-of-focus
areas in photographs I take with my lenses and those in photographs taken
by other people with other equipment, but there are too many subjective
factors involved in that.