Archived posting to the Leica Users Group, 2015/10/24

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Subject: [Leica] BIG new Leica
From: john at (John McMaster)
Date: Sat, 24 Oct 2015 20:31:39 +0200
References: <000101d10ddb$f4bf9450$de3ebcf0$> <>

Talking from personal experience Mark?


-----Original Message-----
From: Mark Rabiner

I think the Leica 21mm Super-Elmar-M f/ 3.4 ASPH Lens is better!

On 10/23/15 5:44 PM, "Frank Filippone" <red735i at> wrote:

> The 21 and 24 SEM are similar to the 50 ASPH Lux (and the WATE!).  I 
> can pick out images from those lenses from others in my stable....
> It may be that the optical characteristics of the most modern lenses 
> are similar.... design tools?  Intentional design compromises?  Purely
> Frank Filippone
> Red735i at
> -----Original Message-----
> From: LUG [ at] On 
> Behalf Of John McMaster
> Sent: Friday, October 23, 2015 2:40 PM
> To: 'Leica Users Group'
> Subject: Re: [Leica] BIG new Leica
> The 21mm SEM beats the Elmarit asph in all areas IMO. I would say that 
> the S range is Leica's still lens showcase range ;-)
> john
> -----Original Message-----
> ?Yes, everything is a whole set of compromises.  I assume Leica and 
> Zeiss will both continue to make optics that also cater to those who value
> The M line is Leica's current showcase of what it can do.  It may be 
> that the Loxia line for the Sony is representative of what Zeiss can 
> do for that platform.
> Since wide angle optics are the main area of my concern regarding the 
> Sony line, I was curious just how much of a penalty that platform will 
> pay.  To show this, I made a Tiff file with a cutout of the Leica v. 
> Zeiss Loxia 21mm
> f/2.8 entries into this competition shown on different layers.  The 
> images are adjusted to equalize size and distance from the sensor/film.
> Some might find looking at the two similar optics interesting.  
> Download the Tiff from 
> As to relative sharpness, all we have are MTF curves that are not 
> necessarily comparable.  If they are to be believed, the Zeiss wins by 
> a hair.  My experience is that Leica is more conservative in these, and in
> the real world Leica might well win by a hair.   The main and more
> objective measure of performance that could be important is that, 
> consistent with the performances we see in other wide angle lenses, 
> the more retrofocus optic has less vignetting. Zeiss is claiming light 
> falloff at f/2.8 that is equal to the Leica at f/8.
> Paul

Replies: Reply from red735i at (Frank Filippone) ([Leica] BIG new Leica)
Reply from mark at (Mark Rabiner) ([Leica] BIG new Leica)
In reply to: Message from red735i at (Frank Filippone) ([Leica] BIG new Leica)
Message from mark at (Mark Rabiner) ([Leica] BIG new Leica)