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Re: Optical Alignment

  • From: T3D john bercovitz <bercov@xxxxxxxxxxx>
  • Subject: Re: Optical Alignment
  • Date: Wed, 7 May 1997 20:36:33 -0700
I'm not 100% on what's meant by "alignment" in this context.  
I suspect that it means whether or not the lens' axis is 
perpendicular to the film plane.  Let me know if I'm wrong.
If I'm right, then you should be able to tell by taking a
picture of a grid or of radial lines leaving a central point.  
If the lens is tilted, then you will have two opposite areas 
out of focus and at 90 degrees to them, you will have two 
areas in focus.
 
John B


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