Archived posting to the Leica Users Group, 2015/10/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Talking from personal experience Mark? john -----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 verizon.net> 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 chance? > > Frank Filippone > Red735i at verizon.net > > > -----Original Message----- > From: LUG [mailto:lug-bounces+red735i=verizon.net at leica-users.org] 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 compactness. > 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 > http://www.paulroark.com/Loxia-v-Leica-21-f28.tif > > 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 > www.PaulRoark.com >