fer_fer_fdi

<p>>A 2x Yellow-green filter will reduce the amount of light by 1-stop, so to correctly meter for this f/2 becomes f/4</p>

<p>No, becomes f2.8</p>

<p >Wonderful! Is this the f3.5 Summaron?</p>

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<p > </p>

<p ><a href="/photodb/user?user_id=1670384">Knut Schwinzer</a> , Jan 28, 2016; 09:14 p.m.</p>

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<p>Yes, the great Summaron. My first and always highly esteemed Leitz lens. No hood required.<br>

"Jump!!!"</p>

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<p>App author warns on his site that the app (or if you use a sound editor instead of this app) can only be useful up to 1/125 when testing curtain shutter cameras, because of all the mechanism noise masks the open/close peaks.<br>

I was trying to test a Leica II and it was pretty hard with faster than 1/100 speeds...<br>

(and of course, the light plug can't be used with this cameras unless you take them apart)</p>

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<p >><a href="/photodb/user?user_id=504260">Martin Tai</a> May 09, 2015; 06:01 a.m.</p>

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<p>><a href="/classic-cameras-forum/00bq7E" rel="nofollow">http://www.photo.net/classic-cameras-forum/00bq7E</a></p>

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<p>Hi, it's a great idea/app but I guess the photo sensor plug can't be used for a Barnack Leica camera (Leica II in my case) since you can't see thru the shutter.... am I right?</p>