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Re: [OM] Macro coupling rings and T32 flashes

Subject: Re: [OM] Macro coupling rings and T32 flashes
From: "Paul D. Farrar" <farrar@xxxxxxxxxxxx>
Date: Fri, 27 Feb 1998 23:04:26 -0600
At 05:15 PM 2/26/98 +1100, "Terry and Tracey"
<foxcroft@xxxxxxxxxxxxxxxxxxxxxx> wrote:
...
>Somebody wrote that the flash must be displaced by greater than the lens focal
>lenght/20 to eliminate red eye. I had the same thought as you (without the zoom
>adapter) and the few photos I've taken with the winder/bounce grip on came out
>OK.
>
>Foxy
...

That was me, but the formula is (camera-subject distance)/20. I haven't
run a test on it, but it sounds about right from what I've seen. It's the
angle between the lens-eye line and the flash-eye line that counts.

Paul


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