Archived posting to the Leica Users Group, 2004/09/01

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Subject: [Leica] Unintended flare test of 90mm Elmarit-M
From: doubs43 at cox.net (Walker Smith)
Date: Wed Sep 1 18:28:39 2004

Just a thought: Look behind the tree in the center background of the 
picture. There's a car there with a windshield that could have reflected 
sunlight directly into your lens at the instant of exposure. The focal 
plane shutter may have passed at prercisely the wrong time and the car 
will have moved forward a little when the slit passed and registered the 
image. The windshield is awfully bright even so.

IOW, because the car was moving, the reflected light would be registered 
BEFORE the image of the car........ the result of a focal plane shutter.

There was once a photograph published in a newspaper of a baseball 
player hitting the ball. The ball was distorted and clearly in contact 
with the bat while the shadows on the ground showed the ball and bat 
with a gap between them. The picture was taken vertically with a Speed 
Graphic using the focal plane shutter.

Same idea here.

Walker