Archived posting to the Leica Users Group, 2005/03/11

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Subject: [Leica] RD-1 users: Light loss with fast lenses?
From: vondauster at (Will von Dauster)
Date: Fri Mar 11 21:46:09 2005
References: <>

On Mar 11, 2005, at 2:36 PM, Peter Klein wrote:
> None of this prevents using fast film lenses, but you have to do some 
> tests to know how your own equipment works.  Squirrely stuff happens 
> at the extreme ends of that aperture dial.  My 50/1.4 OM lens takes 
> great pictures at f/2, but there's not so much point in opening it to 
> f/1.4 as there would be with film.  I hope a Summilux won't suffer the 
> same fate on a digital RF.


I haven't _noticed_ any light falloff on the corners of photos taken on 
a borrowed R-D1 using my Summilux 50mm at 1.4, which is not to say none 
exists. The signature look of the lens is still easily seen on the 
Epson. And I do see, at least so far, one stop difference in exposure 
time between f2 and f1.4. And all of the "snapshot" exposures - nice 
landscapes and the like - I've taken thus far have been spot on, though 
the meter's limitations must be taken into consideration with backlit 
exposures, just like the M6.

All in all a very nice camera, and for half the price I'd own one 
myself. It was purchased two weeks ago from BH, and has a serial number 
less than 2000.

Will von Dauster
Boulder, Colorado

In reply to: Message from pklein at (Peter Klein) ([Leica] RD-1 users: Light loss with fast lenses?)