Archived posting to the Leica Users Group, 1998/01/17

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Subject: Re: [Leica] Hoods???? Who makes square ones???
From: Eric Welch <>
Date: Sat, 17 Jan 1998 22:56:27 -0600

At 08:25 PM 1/17/98 -0500, you wrote:

>I know that rectangular shades are more efficient because, being an engineer,
>I know something about geometry.

Besides, film is rectangular, and the image circle from the lens that is
outside the rectangle is wasted and has the potential to cause flare. So
cut the non-imaging light out of the lens altogether and you reduce
potential flare.

Eric Welch
St. Joseph, MO

Hard work has a future payoff. Laziness pays off now