[Leica] Which has more central Resolution: Sony 28-70 or Leica 28-70?
Ted Grant
tedgrant at shaw.ca
Sun Dec 6 09:34:43 PST 2015
Jeeeeeeeezh Nathan that's mean? :-) Don't you realize there are a lot of guys who's hearts you just broke? Cause they like fiddling around doing that kind of stuff??????? yer mean! :-) :-)
ted :-) :-) :-)
-----Original Message-----
From: LUG [mailto:lug-bounces+tedgrant=shaw.ca at leica-users.org] On Behalf Of Nathan Wajsman
Sent: December-05-15 10:31 PM
To: Leica Users Group
Subject: Re: [Leica] Which has more central Resolution: Sony 28-70 or Leica 28-70?
I got tired just reading this…I test lenses by going out and taking pictures with them.
Cheers,
Nathan
Nathan Wajsman
Alicante, Spain
http://www.frozenlight.eu <http://www.frozenlight.eu/>
http:// <http://www.greatpix.eu/>www.greatpix.eu
PICTURE OF THE WEEK: http://www.fotocycle.dk/paws <http://www.fotocycle.dk/paws>Blog: http://nathansmusings.wordpress.com/ <http://nathansmusings.wordpress.com/>
Cycling: http://www.crazyguyonabike.com/belgiangator <http://www.crazyguyonabike.com/belgiangator>
YNWA
> On 05 Dec 2015, at 23:07, Frank Filippone <red735i at verizon.net> wrote:
>
> Which has more Resolution: Sony 28-70 or Leica 28-70? The question had
> bothered me ever since I got the A7, when either lens would fit on the same
> body...
>
> There are really good reasons to not care, including AF and Auto Diaphragm
> operation of the Sony. But which would have would have better glass?
>
>
>
> My application is mostly travel photography. in which case things like
> distortion issues, vignetting, color cast,, etc have a lesser value to me
> than brute force net resolution.
>
>
>
> With a couple of 28-70 in hand I went a'testin.
>
>
>
> The Sony 28-70 F3.5-5.6 is the "kit" lens usually associated with the A7
> bodies. It is not expensive to buy on its own, and as part of the Kit, is
> hard to turn away.
>
> The Leica 28-70 F3.5-4.5 Rom lens is the third model ( first was designed
> and made by Sigma, and not considered a superb lens optically or
> mechanically, second is the Sigma designed, Kyocera made lens, and the third
> is apparently a slightly modified Sigma design, modified by Leica, and built
> by Kyocera. Depending on what you read, the second and third or third only
> have a different barrel. Again, depending, the third is a Leica designed
> barrel and has modified optics. FYI, Kyocera is/was the company that brought
> back the Contax name.. The third version is the only one with factory ROM.
>
>
>
> Some will ask, well why not test the Leica 28-90 lens, the one with a
> splendid reputation? Because I do not have access to one, and the price
> point is too high for my interest! 35-70? Different range meaning that a
> direct comparison is difficult, not available to me, but I am working on
> accessibility...
>
>
>
> How did I test?
>
> A7 camera, 24MP, no IS. ( no, I do not own a 36MP camera so the test was
> done with existing equipment)
>
> Tripod
>
> Delayed shutter release. no movement introduced errors
>
> Electronic first shutter.. no shutter slap
>
> RAW Files
>
> Manual focusing at 11.3x ( or whatever) magnification. LCD or eye level? I
> used the eye level. GG type focusing. No assist.
>
> Cheap Chinese adapter from R to NEX. cost me $12. Any questions or dissing
> of this cheap adapter, go back to the price point. It is worth $12 to do a
> test, Not $200 or more.
>
> Only the central area of each lens was tested in depth, spot check
> examination of the corners had the same results.
>
>
>
> What was the control lens?
>
> 50 Summilux ASPH, probably the best lens in Leica's M portfolio, with the
> possible exception of the 50 APO ASPH Cron ( which I have no access to).
>
> It was mounted using a Novoflex adapter.
>
>
>
> What Focal lengths were tested? 28, 50 and 70 mm
>
> What F stops? F4 and F8
>
>
>
> How did I compare images? Raw files in LRcc, latest version, updated 24
> hours before. 1:1
>
>
>
> What LR settings were used? None,. All set to basically un-touched,
> neutral
>
>
>
> What was used as a test image? A section of the outdoor fence at my house.
>
>
> It was made from cedar, is 44 years old, and has enough character to allow
> minute comparisons of image quality. Bug holes, wood texture and all.
>
> Distance was about 15 feet.
>
>
>
> What ISO? ISO320 for all.
>
>
>
> Now that you have read all the caveats.. The results...
>
>
>
> The 50 ASPH Summilux is the best by a fraction.
>
> The Leica Zoom lens held its own, and was a CLOSE second. ( Surprise! The
> Zoom was surprisingly good, especially when the design was done in the late
> 90's by a company that was supposed to be second rate : Sigma. Proves you
> should never believe everything you read, even if it is on the Internet!)
>
> The Sony lens was not bad, but not as good as the Leica lens.
>
>
>
> The differences were in the fine details, where Leica really did a better
> job than the Sony. This was at all Focal lengths, all apertures. Center
> and corners too.
>
>
>
> Define "better"? small details were obviously sharper and clearer in the
> Leica at 1:1 in LR. Edges crisper.. Overall small detail contrast was
> higher.
>
> Overall contrast and color were very close in all 3.
>
>
>
> Is it worth it to switch to the Leica if you have the Sony? YMMV. You give
> up AF, a big deal for many. You give up auto diaphragm, a big deal to me.
>
> The Leica lens is a bit longer, a bit more in diameter and a bit more heavy.
>
>
> The positive? You get better image quality...
>
>
>
> No, I did not test for CA, etc. This was an initial test to see if I wanted
> to go further... Which I will not.
>
>
>
> The difference in IQ was not enough to outweigh the negative user aspects of
> the Leica.. IMO.
>
>
>
> What might change my final decision? A sensor with more MP may NEED a
> better lens. At 36MP? 43MP? 50MP? 64MP?
>
> I don't know, but there is a point where more resolution is needed than the
> Sony can deliver.
>
>
>
> But that is not in the budget for me for the foreseeable future... in which
> case, I can worry about it then.
>
>
>
> Frank Filippone
>
> Red735i at verizon.net
>
>
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
_______________________________________________
Leica Users Group.
See http://leica-users.org/mailman/listinfo/lug for more information
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
More information about the LUG
mailing list