[Leica] Less you scoff at R lenses compared to 21st Century M lenses.........

[mark at rabinergroup.com (Mark Rabiner)]

Read Erwin?s famous book a few may be Sigma or Minolta designs but by far 
most are pure Leica or Leitz!!
-- 

Mark William Rabiner
Photographer

On 7/5/17, 4:47 AM, "LUG on behalf of Frank Dernie" 
<lug-bounces+mark=rabinergroup.com at leica-users.org on behalf of 
Frank.Dernie at btinternet.com> wrote:

    Interesting Frank, with respect to the R zoom I had always thought that 
they were Sigma designs built by Leica to Leica tolerances in Leica type 
mounts. Thanks for the update.
    My main 50 is the f1.4 Leica on an M though.
    cheers,
    Frank D.
    
    > On 4 Jul 2017, at 23:07, Frank Filippone <red735i at verizon.net> 
wrote:
    > 
    > #1. if you do not wish to read about techie stuff, quit now.  This is 
a very
    > nerdy test that takes absolutely no interesting pictures.  It is a Lens
    > test.  Period.
    > 
    > 
    > 
    > For a while I have been trying to cut the weight and bulk of my M kit, 
at
    > the same time, making travel photography less complicated.  
    > 
    > My preference is towards the least user intervention in the 
photographic
    > process.  Changing lenses is a big distraction.  
    > 
    > Getting a SL and lenses, is not in my budget, even after they dropped 
the
    > price of the body by almost $1500. 
    > 
    > 
    > 
    > Museums and Churches are dark places.  I want one fast lens to do 
Churches
    > and museums.  50mm seems the right lens.
    > 
    > To that end, I collected a bunch of lenses, and ( thanks to Doug, yet 
again)
    > a Sony A7II body (24MP body).
    > 
    > Using that body as my test device, I tested out my 50mm lenses for use 
in
    > low light conditions.. Full open Aperture..  For zooms, they were only
    > evaluated at 50mm.
    > 
    > I used a tripod, self timer, manual focusing at max magnification, 
distance
    > of about 12 feet, in bright light, ISO 50.  
    > 
    > My subject is the cedar fence ( now 45 years old) in my front yard.  
Lens
    > Hoods were used in all cases.
    > 
    > I took 3 images for each lens, keeping the best , and evaluated all the
    > images through LRCC at 1:1.  
    > 
    > Only the center of each image is evaluated, at full aperture ( F1.4 or
    > whatever)  Because that is how I will use this lens.  Full open 
aperture.
    > 
    > 
    > 
    > For the results..  Best to worst.. This is all about central 
resolution, and
    > ability to get fine detail... 
    > 
    > 1)    Leica M 50mm F1.4 ASPH.  Wins by a big margin optically.  Fully 
manual
    > operation, as are all M and R lenses.
    > 
    > 2)    LeicaFLEX Vario Elmar R 28-70 F3.5-4.5 ( 1990 design, Rom 
version,
    > with Novoflex adapter.  Fully manual)  ( Stick that in your .. "old 
lenses
    > suck". pipe and smoke it)
    > 
    > 3)    Sony 55mm F1.8 ( very close to the Leicaflex lens.  Lightest 
lens in
    > the test and it is AF and auto-aperture)
    > 
    > 4)    Leica M 50mm F2 ( early 1990's vintage)
    > 
    > The next bunch are pretty close, but if you leave out 1 lens, the
    > differentials are greater. so the lenses do decrease in capability
    > 
    > 5)    Leica M 28/35/50 Tri Elmar F4
    > 
    > 6)    Sony 28-70 F4.5-5.6 Zoom (AF)
    > 
    > 7)    Nikon 50mm F1.4 AF non D lens ( with Fotodiox adapter, no AF as 
it has
    > a mechanical aperture connection to the body)
    > 
    > 8)    Nikon 50mm F1.4 G lens ( which will AF on the Sony body with the
    > Fotodiox adapter)
    > 
    > Big gap in image quality, but that is not the prime purpose of these 
lenses
    > 
    > 9)    7 Artisans 50mm F1.1 Chinese (New, $369, 400grams, delivered in 1
    > week!) 
    > 
    > 10)                       Noctilux 50mm F1.0
    > 
    > 
    > 
    > Yes, the best lens of the bunch  was the 21st century marvel.  But you
    > probably believed that before you started to read this.
    > 
    > To me, the surprise was the Leicaflex lens doing so well...  FYI, I 
believe
    > this lens is a Leica design produced by Sigma in Japan
    > 
    > And to me, the most rewarding part of the test is how well the Sony 55 
F1.8
    > lens did..since that lens is part of my proposed new kit.  Optically, 
it IS
    > good enough to do what I ask of it..
    > 
    > 
    > 
    > Remember, these results are specific to MY lenses and MY needs 
(wants?).  If
    > you were to evaluate your kit, or, even using my images, or making up 
new
    > images using my lenses, may result in a different order.  (YMMV)
    > 
    > 
    > 
    > Comments?
    > 
    > 
    > 
    > I also tested the Sony 16-35 Zoom lens against the Leica 16/18/21mm 
Wide
    > Angle Tri Elmar.  
    > 
    > Hands down, the Leica lens is superior at 16mm.  At 18mm, they are much
    > closer, but the Leica is still better.  At 21mm, the Sony lens is 
superior.
    > 
    > 
    > At these focal lengths, manual focusing errors are more prone to 
happen,  AF
    > was used and results were gathered from the AF Sony images.
    > 
    > 
    > 
    > BTW, my time to do this came about as I tend to my Wife, as she is now 
lying
    > prone ( last 4 weeks) with back issues. so getting further than the 
cedar
    > fence surrounding the house is an issue..
    > 
    > 
    > 
    > Frank Filippone
    > 
    > 
    > 
    > Red735i at verizon.net
    > 
    > 
    > 
    > 
    > _______________________________________________
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