Polarizers and copy work

[nsurit]

I'm going to attempt to copy a piece of art work for a friend of mine. Here is the set up. A pair of borrowed Lowel Tota lights positioned at 45 degree angles from art work on either side of it. A polarizer in front of each light and camera equipped with polarizer. Lights & camera level with mid point of painting. My assumption is that the polarizing screen in front of each light should be on the same axis and then the one on my camera is adjusted to eliminate the reflecting off the painting. Am I on the right track? Bill Barber

 

[Larry Bullis]

Ok. I had to read this twice to be sure what you meant. Yes. You should find that when the reflections are minimum, the axis of the filter on the camera would be opposite the ones on the lights. Anyway, if you just turn the filter to where the reflections are at minimum you'd be doing the right thing.

 

[OnTargetInc]

You're on the right track. Just place a shiny metal object on your copy board and watch the effect when you view through and rotate the camera polarizer.

 

[Ralph Javins]

Good morning, Bill Barber;

Yes, you have it correct. If you can identify the orientation or "polarity" for each filter, you will find that the greatest reduction effect will be when the two light filters are parallel to each other, and the camera filter is at a right angle or 90 degrees out of phase with the other two.