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Comparing ray/doc/man/man1/pmdblur.1 (file contents):
Revision 1.1 by greg, Tue Jan 18 03:59:40 2005 UTC vs.
Revision 1.3 by greg, Tue Sep 4 17:36:40 2007 UTC

# Line 1 | Line 1
1   .\" RCSid "$Id$"
2 < .TH PMDBLUR 1 1/17/05 NAME
2 > .TH PMDBLUR 1 1/17/05 RADIANCE
3 > .SH NAME
4   pmdblur - generate views for combined camera motion and depth blurring
5   .SH SYNOPSIS
6   .B pmdblur
# Line 110 | Line 111 | This will be just enough to blur the boundaries of the
111   which may appear using
112   .I pmdblur
113   with a small number of time samples.
114 + .PP
115 + To simulate a particular camera's aperture, divide the focal length of
116 + the lens by the f-number, then convert to the corresponding
117 + world coordinate units.
118 + For example, if you wish to simulate a 50mm lens at f/2.0 in
119 + a scene modeled in meters, then you divide 50mm by 2.0 to get 25mm,
120 + which corresponds to an effective aperture of 0.025 meters.
121   .SH EXAMPLES
122   To use
123   .I pinterp
# Line 117 | Line 125 | to simulate motion blur between two frames of a walk-t
125   animation, where the camera shutter is open for 1/4 of the
126   interframe distance with an aperture of 0.1 world units:
127   .IP "" .2i
128 < pmdblur .25 .1 8 fr1023.pic fr1024.pic | pinterp -B -vf fr1023.pic -x 640 -y 480
128 > pmdblur .25 .1 8 fr1023.pic fr1024.pic | pinterp \-B \-vf fr1023.pic \-x 640 \-y 480
129   fr1023.pic fr1023.zbf fr1024.pic fr1024.zbf > fr1023b.pic
130   .SH AUTHOR
131   Greg Ward

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