Archived posting to the Leica Users Group, 2008/03/29

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Subject: [Leica] CV 15mm lens on M8
From: tarek.charara at pix-that-stimulate.com (Tarek Charara)
Date: Sat Mar 29 02:32:05 2008
References: <032720082322.9068.47EC2C1B000F27140000236C219792676103010CD2079C080C03BF970A9D9F9A0B9D09@mchsi.com> <001301c89066$f510ec10$6b01a8c0@dadquad> <p06230904c4123a9277e7@[10.1.16.146]> <000901c8912c$a1510850$6b01a8c0@dadquad>

That explains quite a bit. I have noticed something else though,  
sometimes (I noticed this with a portrait done with the Noctilux) the  
frames are not equally conservative on top and in the bottom. If it's  
10% for the top frame, it must have been 5% for the bottom frame...

All the best from the south of France!

Tarek

-------------------------------------------------
Tarek Charara
<http://www.pix-that-stimulate.com>


Le 29 mars 08 ? 00:37, Geoff Hopkinson a ?crit :

> Hi again Henning. As I noted, my initial experience with the frame- 
> lines
> being conservative was with the 28, 35 and 50 lengths. I found the  
> Leica
> reference that confirms your information. The lines approximate the  
> viewing
> angle at the minimum distance for the focal length selected. Leica  
> says that
> the 28mm will have approx 9% of the image outside the 18x27mm frame at
> infinity. 23% outside the frame for a 90mm at infinity.  
> Correspondingly less
> then, as the shooting distance gets closer to the minimum focus  
> distance.
> The quoted difference for an M7 and the 28 is exactly the same. The M7
> frames approximate a FoV of 23x35mm (about a mounted slide).
> So all of the M8 users, including me, that are seeing the conservative
> frame-line effect are seeing exactly what their film Ms did with  
> the same
> lenses. The differences then, are that we get immediate feedback if  
> we are
> looking at the LCD and I would think, more room for parallax error  
> due to
> the lower magnification. Cool, another bit of knowledge to squirrel  
> away.
> The more I learn about this M8, the more impressed I am with its
> performance.
>
> Cheers
> Geoff
> http://www.pbase.com/hoppyman/e
> http://gallery.leica-users.org/v/gh/


In reply to: Message from grduprey at mchsi.com (grduprey@mchsi.com) ([Leica] CV 15mm lens on M8)
Message from hoppyman at bigpond.net.au (Geoff Hopkinson) ([Leica] CV 15mm lens on M8)
Message from henningw at archiphoto.com (Henning Wulff) ([Leica] CV 15mm lens on M8)
Message from hoppyman at bigpond.net.au (Geoff Hopkinson) ([Leica] CV 15mm lens on M8)