Archived posting to the Leica Users Group, 2007/04/20

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Subject: [Leica] 49 to 46 Step down ring was Leica Service in Hong Kong
From: tomschofield at comcast.net (Tom Schofield)
Date: Fri Apr 20 21:17:55 2007
References: <200704201322.l3KDM505022142@server1.waverley.reid.org> <3AAD8C70-533A-4FE0-BE59-BB2B6348C73A@netvigator.com> <53EF6377-AA85-4E85-9C99-E8A8BB70CA75@comcast.net> <023a01c783a6$58bdec00$0a39c400$@net>

That's basically what I did, except to put a pice of white paper over  
the film plane, and used it like a ground glass looking for  
vignetting.  I did that to see what vignettes with the Noctilux.  You  
can only use a single E60 standard filter (not a polarizer), or step  
up to at least 67mm to avoid vignetting with the Noctilux.

Tom

On Apr 20, 2007, at 4:48 PM, Frank Filippone wrote:

> Well.. on any M camera, open the back door.  Set lens to F wide  
> open.  Lock shutter to B ( shutter open) .  Focus or not.
> Look through the rear door at the corners through the extreme other  
> corner of the lens.....  If you  see anything other ( darker)
> than image, you have vignetting.
>
> Now that is easy.....
>
> Frank Filippone
> red735i@earthlink.net
>
>
> Not to mention the vignetting is easy to check on the M8 display!
> With film, you have to process a roll, or stick a piece of paper over
> the back and use it like a ground glass to see.
>
> Tom
>
>
>
>
> _______________________________________________
> Leica Users Group.
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In reply to: Message from cummer at netvigator.com (Howard Cummer) ([Leica] 49 to 46 Step down ring was Leica Service in Hong Kong)
Message from tomschofield at comcast.net (Tom Schofield) ([Leica] 49 to 46 Step down ring was Leica Service in Hong Kong)
Message from red735i at earthlink.net (Frank Filippone) ([Leica] 49 to 46 Step down ring was Leica Service in Hong Kong)