[pure-silver] Re: Durst L1200 (condensor) & uneven illumination

  • From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
  • To: <pure-silver@xxxxxxxxxxxxx>
  • Date: Mon, 23 Jul 2007 23:26:44 -0700
----- Original Message ----- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx> 
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Monday, July 23, 2007 12:03 PM
Subject: [pure-silver] Re: Durst L1200 (condensor) & uneven illumination
----- Original Message ----- From: "Martin Jangowski" <martin@xxxxxxxxxxxx> 
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Monday, July 23, 2007 4:24 AM
Subject: [pure-silver] Re: Durst L1200 (condensor) & uneven illumination
distortionless projection and a normal pupil is fall off = 
cos^theta where theta is the half-angle, i.e., angular


   Should be cos^4 theta where theta is the half-angle.

---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx 
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