When using a declared camera, the orthographic projection
doesn't ajust properly to the specified angle.  (with
a non-declared camera, it works as expected).

Example :
//=====================================================
#include "colors.inc"

#declare Cam1 =
camera {
  //orthographic //<-- uncomment this to see the problem
  location <150,150,150> look_at 0
  angle 10
  }

camera {Cam1}

sphere {0,5 pigment {Red}}

light_source {<500,1500,500> White*1.5}
//=====================================================

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