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Thread: Sony Zeiss 24mm f1.8 Sonnar available at B and H

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    Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Just bought one. Still in stock if any one interested.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Just got mine at B&H too. Steve Huff sent out an e-mail alert saying it was in stock. But it looks like it's already sold out now! I hope it's all it's cracked up to be. It's my Christmas present to myself! Now I've got to break the news to the wife!

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    so how do you like it?

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    t_streng wrote "so how do you like it?"

    The guy at B&H said it's going out in the mail this afternoon. I think I'll have it by Thursday. Hope it's good.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    mine will be here on Friday

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    The eagle has landed.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by jfirneno View Post
    The eagle has landed.
    Enjoy your new lens! Let us know how you like it.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    How does everyone like that lens shade?

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    I collected my long-awaited one, confident that I had the perfect solution for low light, for AF, and my favorite FL. Even did a comparison test against other lenses to verify my initial impression. It is the first Zeiss lens that I try but don't buy (I own 11).

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by philber View Post
    I collected my long-awaited one, confident that I had the perfect solution for low light, for AF, and my favorite FL. Even did a comparison test against other lenses to verify my initial impression. It is the first Zeiss lens that I try but don't buy (I own 11).
    Why?

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by 4season View Post
    How does everyone like that lens shade?
    Its good protection but too big for my taste.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by t_streng View Post
    Why?
    I am not one to look for extreme corer sharpness wide open and such performance, which only affects part of a picture and not all pictures. I am very sensitive to colours, contrast, shadings, detail, rendering style, all of which affect 100% of all my pics. I set up a comparison between 3 alt lenses, the ZA 24 and the Sony kit zoom. Not only did I rate the ZA less than the 3 alt, but I felt it was closer to the zoom than to the alt trio. Only my personal opinion, of course, others are free to feel otherwise.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by philber View Post
    Not only did I rate the ZA less than the 3 alt, but I felt it was closer to the zoom than to the alt trio. Only my personal opinion, of course, others are free to feel otherwise.
    I assume you mean the ZE (rather than ZA) 24mm designed for the NEX E mount and not the ZA 24mm f/2?

    Graham

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    To the best of my knowledge, ZE lenses are for EF (Canon) mount, and ZA for Sony. In any case, I am talking about the new 24mm f:1.8 E-mount for NEX. Sorry if that was not clear and created confusion.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by philber View Post
    I am not one to look for extreme corer sharpness wide open and such performance, which only affects part of a picture and not all pictures. I am very sensitive to colours, contrast, shadings, detail, rendering style, all of which affect 100% of all my pics. I set up a comparison between 3 alt lenses, the ZA 24 and the Sony kit zoom. Not only did I rate the ZA less than the 3 alt, but I felt it was closer to the zoom than to the alt trio. Only my personal opinion, of course, others are free to feel otherwise.
    I only know I like it better than the zoom at 24mm, and did some "quick & dirty" between the M9 with a 35SummiluxFLE and the 24/1.8 on the 5n and found the Nex combo to perform pretty good.
    All first impression anyways.

    The other thing is that compared to a 20/1.7 lens on a G3 the size difference is very big..

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Had a chance to take a few test shots today with the 24 on my 5N. My impression is that it's sharp across the frame right from F1.8. The photos are pretty mundane (townscape shots in dreary New England winter) so it's hard to get very excited about the photos but from what I see, the lens is excellent. I'm guessing that some of the highly creative folks on this site will be able to produce some splendid pictures when they get this lens. And I'll be able to improve my wide angle shots a little bit too.

    Regards,
    John

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Hi philippe, very interested to hear your thoughts on the new 24mm E Sonnar. I share your photographic priorities, and if you visit again, I would be interested to know more - which alts did better for you, and what shortcomings did you find in the 24/1.8? I do believe that CZ are tuning lenses to markets, and especially with 'collaborator' Sony.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Hi Philip,

    Overall, the best alt I tried was the Leica Elmar 24mm f:3.5. Despite the modest specification, a fantastic lens IMHO. This was confirmed by Boris (bobu) who says it is the best Leica WA ever, except for the 21 Super Elmar, and Lloyd Chambers wrote pretty much the same.
    Marginally less remarkable, my Contax G 45 and then the G 28. One very small step below those, a Leica 35 Summicron. That was the top bunch.
    The next bunch consisted of a Contax C/Y 25 and a Leica 28 pre-Asph Summicron.
    The Zeiss ZM 25 presented some compatibility issues with the NEX 5N, so was ruled out despite its formidable reputation.
    The kit zoom did remarkably well, considering the competition it was up against, confirming my very positive opinion of it.
    The ZA 24 (and I tried two copies, which performed identically) showed only one problem, that of CA. But that can be corrected in PP, so that is not the issue. My first impression was that this lens underexposed, which is technically impossible with a LiveView camera, at least to my understanding. Hence the desire to compare, which I don't usually do. This showed that the ZA 24's pictures were indeed darker than those of other lenses, a darkness that I couldn't correct to my satisfaction in PP. They have some kind of darkish hue, not unlike, for want of a better description, of a grey and gloomy day with low clouds and rain in late autumn.
    The other and main issue is that what I saw was just not good enough. Neither the colours, the contrast the rendering made the picture appealing enough. I posted them on another forum and members concurred, some being even much more severe than I and claiming that I was being too Neiss with Zeiss.
    Hence I did not buy it, and ordered the Leica 24.
    To be complete, I should add that the two ZA lenses I tried but did not buy were since purchased by people who are happy with them, and that there are other ZA 24 owners reporting their satisfaction on the Net, including here. It may be that my being used to seeing shots from superlative lenses with my 5N (Contax G, ZM 18, Leica R Makro) has made me more sensitive/demanding/intolerant than is good for me. Or maybe the ZA 24 is particularly well tuned for the NEX 7. Or...
    Hope this helps...

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by philber View Post
    Hi Philip,

    Overall, the best alt I tried was the Leica Elmar 24mm f:3.5. Despite the modest specification, a fantastic lens IMHO.
    Would care to expand on what you use your lenses for? Obviously, the f/3.5 Elmar is a very slow compared to the E-Sonnar 24/1.8. What sort of comparisons you make?

    Detailing this (make a separate thread if you care) would help spare the redundant posts starting with, "I am sorry.. " and ending with "...ZA is no good".

    BTW, what is an "alt"?

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    I picked up a copy of this lens this afternoon and will make some shots.

    However I can already confirm that the auto focus + focus peeking + magnified manual focusing capability with this lens attached is better and easier than the only focus peeking capability of the camera when using adapted lenses. It is a surprisingly large lens on the Nex body longer than my Leica M lenses - but it isn't as heavy as a Leica. It is also an incredibly close focusing lens.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Philber, what are the issues with the ZM 25 on an NEX 5N?

    I understand the NEX 3,5,7 have issues with this lens (color shift in the corners, & perhaps some corner smearing) but to my understanding, the 5N handles RF wide angle lenses well.

    I'm was hoping to see that the ZM 25 might have the clinical sharpness that, according to others, the new native Zeiss 24mm for the NEX lacks.

    Thanks, Alan

    Quote Originally Posted by philber View Post
    The Zeiss ZM 25 presented some compatibility issues with the NEX 5N, so was ruled out despite its formidable reputation...

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Alan, the ZM 25 has border smear, and corner performance is worse yet. The reason is that Zeiss Biogons are symmetrical designs, the most likely to cause such problems in a NEX, unlike the Distagons. Which explains why ZM 18 is fine, but ZM 25 is not. This is explained in detail in Dr Nasse's paper on designing wide angle lenses on the Zeiss site blog.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    It's a tough call, because many of the ZM Biogons and Distagons aren't true Biogons and Distagons, and they're all kind of somewhere in the middle, but, as Philber said, the ZM 18 seems to be just "Distagon" enough to work better than the 21 and 25. The Zm 35/2, despite being called a Biogon, has a much longer exit pupil to sensor distance than the other ZM Biogons, so it works pretty well on NEX, too.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    There problem is not with the ZM25. The Ricoh GXR does a fabulous job of recording what this lens projects.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by Vivek View Post
    There problem is not with the ZM25. The Ricoh GXR does a fabulous job of recording what this lens projects.
    Of course not. We're talking about how the lens behaves on NEX. I'm currently looking into removing the 5N's AA filter, which should make the edge issue much better with these Biogons. If the GXR had a tilt up screen, and maybe a better EVF, I'd buy one tomorrow. It's got a great sensor setup for M lenses.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by douglasf13 View Post
    Of course not. We're talking about how the lens behaves on NEX. I'm currently looking into removing the 5N's AA filter, which should make the edge issue much better with these Biogons.
    Me too.

    The idea that Nex-5N (unlike the other NEX') has offset micro-lenses thus promoting the use of lenses with short focal length has to be put in its context.

    If you remove the AA filter (impossible I would say- see below why)* in NEX-5N it will still not measure up to what happens in GXR.

    * The AA filter is firmly epoxied to the UV/IR cut filter. If you get rid of the whole thing then it is back to the M8 story all over, in a very big way.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by Vivek View Post
    Me too.

    The idea that Nex-5N (unlike the other NEX') has offset micro-lenses thus promoting the use of lenses with short focal length has to be put in its context.

    If you remove the AA filter (impossible I would say- see below why)* in NEX-5N it will still not measure up to what happens in GXR.

    * The AA filter is firmly epoxied to the UV/IR cut filter. If you get rid of the whole thing then it is back to the M8 story all over, in a very big way.
    According to a gentleman in the industry, Joakim, on another forum, both the microlens arrangement and IR filter that Leica advertises for the M9 are relatively pedestrian, and their importance is more a matter of marketing. As Dr. Nasse talks about in the recent Zeiss wide angle paper, the sensor toppings are causing much of the issue at the edges with these symmetrical wides, and removing the AA filter is a big part of that equation. I don't expect Ricoh's fill factor on the GXR M module to be much better than the 5N's, but that AA filter in the way certainly seems to be causing astigmatism on the 5N. I'd bet that an AA-less 5N would be comparable to the GXR in the corners.

    The companies that remove AA filters from DSLRs, and potentially NEX, remove the AA/IR filter pack, and replace it with a new pack that only contains the IR filter (and, for DSLRs, and clear glass cover, so metering doesn't change.) I am going to request no clear glass cover, since metering is done on sensor, but we'll see if they do it.

    link to Joakim's thoughts on the M9 sensor and IR filter: http://www.fredmiranda.com/forum/top...r=2010#8504636

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Because I understand what you are saying, I say this. Very nice quotes that have their own merit in the context they are written.

    I do not think your assumptions (Ricoh does not have a better fill factor- ie better offset arrangement of the microlens array- thus making the corners better) and the reading of some of the quoted writings are correct.

    Some folks have talked about Leica choosing something "cheap" thus creating problems. I do not think that is correct at all. The cyan glass has many problems when it comes to physical and chemical stability. I have about a dozen different ones. Only a few show the ability withstand the environment for more than 6 months. In addition, not all can be AR coated.

    Also, the NEX5n sensor still would have a cover glass which is firmly epoxied (in principle removable, a few do it but it would cost you more than the price of a NEX-7 on eBay) to the sensor casing.

    All that said (with the best intentions), good luck with your attempt and I would love to hear what you achieve.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    I've not really seen any evidence that the GXR does a much better job in the corners than the M9 does cropped to aps-c. Either way, even if we don't extrapolate this info in regards to the GXR, I think we can say that an aa-less 5N should do at least as well as the M9 cropped to aps-c size. Maybe I'll have to be the guinea pig.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    "It may be that my being used to seeing shots from superlative lenses with my 5N (Contax G, ZM 18, Leica R Makro) has made me more sensitive/demanding/intolerant than is good for me."

    Many thanks, philippe, that is just the info I was after, and thanks for your candour. In a nutshell, the new 24/1.8 seems to lack brilliance and colour tranmission, and noticeable CA is not a good sign in a $1000 lens from this maker. Zeiss are adamant that the new 25/2 Distagon has superb CA control..

    Vivek, 'alts' is the abbreviation for 'alternative lenses', i.e. non-native mount lenses, usually (but not exclusively) high end manual focus lenses. I have a Sony full-frame I use with around ten alt lenses and 1-2 Sony lens, for example. Why be restricted to the 'Sony/Minolta look' or the Canon or Nikon 'look' just because you use the body of that maker? NEX takes that to a supercharged level, of course.

    I should add that, whereas many or most users are content with the usual 'this lens is sharper than that one' opinions, seeing the vast improvement in image quality you get from the lenses that best match what you want in your output can make a hugely satisfying difference. Many do not want to go back, ever.

    On the sensor issue:

    I feel that Sony will be very keen to produce a factory fix for the issue. They are not people to walk away from innovation, quite the contrary, so it may just be a matter of time. The NEX7 will sharpen their interest in it, no doubt.

    It's over my head, but common sense and the cautionary principle may get you there, douglas, so do keep us informed if you go ahead, and good luck if you do.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    "My first impression was that this lens underexposed, which is technically impossible with a LiveView camera, at least to my understanding. Hence the desire to compare, which I don't usually do. This showed that the ZA 24's pictures were indeed darker than those of other lenses, a darkness that I couldn't correct to my satisfaction in PP. They have some kind of darkish hue, not unlike, for want of a better description, of a grey and gloomy day with low clouds and rain in late autumn."

    I have not seen this darkening on my copy of the ZA 24.
    Alan

    Selection of work: http://weinschela.zenfolio.com

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by weinschela View Post
    "My first impression was that this lens underexposed, which is technically impossible with a LiveView camera, at least to my understanding. Hence the desire to compare, which I don't usually do. This showed that the ZA 24's pictures were indeed darker than those of other lenses, a darkness that I couldn't correct to my satisfaction in PP. They have some kind of darkish hue, not unlike, for want of a better description, of a grey and gloomy day with low clouds and rain in late autumn."

    I have not seen this darkening on my copy of the ZA 24.
    Alan, were you using the ZA 24/1.8 on your NEX 5N or NEX 7? I think Phillppe was using it on his NEX 5N.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Some pics from the people who dont like the lens woudl probably carry a lot more weight than the next 5000 words.

    Looking forward to it all.

    [email protected]

    Pete

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    OK, so here goes. I tried a number of lenses, some of which I own and some not. Methodology was: from tripod, with timer, in RAW, processed in LR 3 (default settings), SOOC, fixed f:5.6., significant crop close to centre of image, all shots as closely spaced as possible to minimise light change. Out of a total of 9 lenses, spread over three sessions on three separate days, I will show "only" the Zeiss 24mm ZA, and a Leica 24 Elmar f:3.5 (same session). Please note that for some reason the EXIF is not always correct, the ZA shwong as "24mm" and not its full indentity. Also, being disappointed at the first quick ad dirty shots was so unexpected that I tried two copies of the ZA to eliminate chances of a "bad copy". They were essentially identical.
    For reference, in total I did 3 types of shots, one close up, one at mid distance, one at infinity, all findings concurring. And I am usually very Neiss with Zeiss, as 11 out of the 12 alt lenses I own are from them, this being the first case of my not buying one of their designs. As a consequence, I ordered a Leica Elmar 24 (slower, MF, twice the money), so I wish the ZA had lived up to my expectations.
    DISCLAIMER. I am not a tester. I stand to gain nothing from posting these shots. No link to any Website with advertising. No interest in self-aggrandizing self-promotion. I have no vested interest in this matter, as I have already tested the lenses to my satisfaction, so, if I am doing it, it is with the intent that sharing will let others think and (maybe) learn something of value to them. If you flame me because (a) I did not do the "right" shot, or (b), I did not do it "properly", or (c) I did not come to the "right" conclusion, all you will achieve is that I will no longer post a comparison like this on this forum, which takes some time. But you are entirely welcome to disagreeing in any way you feel appropriate, as I do not, sadly, have any copyright on "the truth", much as I wish I had...
    Fist pic is Leica Elmar, second is ZA 24.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Philber:

    That was a very interesting comparison. I could see the darkening that you described. Would you say that exposure compensation during the exposure would eliminate the problem?

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    No, it is not an exposure issue; If a lens is simply "darker" than another one, light going through the lens to the light meter will be less and the meter will instruct the camera accordingly. So how "ligh" of ho"dark" a lens is makes no difference to exposure. This is more a question of colours, with a darkish hue, like a dark, cloudy day. Light that up, and it does not become sunny...

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    There is clearly a brighter light source in the first image as witnessed by the variation in reflections on the green glass window panes that is not present in the zeiss shot.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Nope, it looks that way, but that is the lens. I know, I was there. Ans hsots before and after prove that.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by philber View Post
    Nope, it looks that way, but that is the lens. I know, I was there. Ans hsots before and after prove that.
    Sure it was, the variation in light reflection between the individual panes does not lie. If you can't understand that simple rule of light behavior then these comparisons are immediately suspect in my eyes.

    .

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Interesting how that theory also applies to identical results of other pictures without window panes on other days, of which, of course, I have proof. But obviously, one can lead one's horse to water, but not force it to drink. As to your opinion about my abilities -or lack of-, actually, please re-read my disclaimer.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Philber, May I make a suggestion?

    Instead of continuing the conversation here (and elsewhere), would you start a new thread with your comparisons. I think from your posts, you have made the effort to do the tests in your own way and there is certainly interest form some to see what you found.

    Please keep in mind that no one has to accept your conclusions and neither any contradiction has to be taken as a personal afront.

    Thanks!

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Besides, there is a much simpler test for proving that this lens truly does have a deficiency that causes darkness across the frame - shoot it in a controlled studio environment with identical exposure settings. What you claim may be perfectly accurate, I am simply pointing out that you have a highlight in the Leica image that is not apparent in the zeiss one. If the zeiss was darkening the image uniformly then you would still see the highlight in the zeiss shot, just at a lesser intensity.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Quote Originally Posted by Vivek View Post

    Please keep in mind that no one has to accept your conclusions and neither any contradiction has to be taken as a personal afront.

    Thanks!
    Well said. And I do apologize if my post crossed the line into personal affront territory! None intended. I think everyone here appreciates comparisons like these but disclaimer or not, once posted they are open to evaluation and critique.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    In my disclaimer, I wrote that "But you are entirely welcome to disagreeing in any way you feel appropriate, as I do not, sadly, have any copyright on "the truth", much as I wish I had...".
    A couple of matters require clearing up. I never claimed the lens to be deficient, only that I didn't like it. Others have posted that they love theirs, and I am comfortable with that. I also wish it had been a straight deficiency, because then I would have bought a not-deficient one and been happier than having to fork out twice as much for a slower MF Leica. Which is why I own so many Zeiss and only one cheap Leica R.
    Also, if it were a simple matter of "darkness", why was I not able to correct for it in PP with exposure compensation? And why across multiple shots? And why across a comparison of 8 lenses (the kit, two Leica, two Contax G, one Contax C/Y, one ZM) ?

    My last hope, to be honest, is that the ZA 24 is fine-tuned for the NEX 7. Early reports by a member of another forum indicate that he found an exposure difference between his 5N and his 7. That could explain a lot IMHO, because it seems to me that many buyers of the 7 will want "better" than the kit lens, and then the ZA 24 is a very attractive option for those who can stomach the price. So if there is a difference between the two Sony cams, it stands to reason that the Zeiss people would go for optimizing on the 7. But that is a guess -and a last hope!- based on just one forum opinion...

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Well, if my 5N ever gets back from Sony Laredo (was supposed to be here today but they screwed that up), I will be doing my own comparison with the C/Y Zeiss 25mm and other legacy lenses. Right now I have this nice new 24mm sitting on my desk with nothing to shoot it on!

    Some quick test shots on a demo C3 looked very promising. In the end it is up to the individual to decide if the lens is right for them or not but Philber's comparison posits that there is a issue with the lens that could effect all copies and that will need to be further researched.

    Rooting out any problems with a new product is a good thing but I've also seen plenty of non-issues being reported at early stages in a product lifecycle. Hopefully this is one of those and if not, kudos to Philber for bringing it to our attention.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Unlike other Zeiss lenses I have, this ZA 24mm Sonnar does not come with usual Zeiss MTF chart and optical structure diagram. It has not been listed on official Zeiss website. From a Chinese website, I finally got the information I have looking for. Hope they will help dicussion about this interesting lens. Sonnar or not, you be the judge.

    original link is here
    http://xjrumo.com/2011/08/24/e24-za/

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Thanks for the work, philber, it is certainly appreciated by me at least, because it is one thing to do these comparisons oneself and entirely another to publish them, with the extra time commitment, file prep etc.

    After your earlier post, I checked out the MTF of the two wide Leicas you mentioned, this 24mm Elmar and the 21mm as well. As you know I believe MTF (where accurate) to be a scientific representation of lens performance. Yes, we know the limits, but in terms of sheer contrast levels and resolution, MTF is it. The MTF charts of these two Leicas are very, very close and both are extremely good, guaranteeing image brilliance and fine resolution levels across the frame. To be sure, the 24mm is this one: 'Elmar-M 24mm f3.8 Asph'? If so, a little slower, f3.8.

    To your near-centre crops: what I find interesting is the lack of apparent contrast the 24ZA shows, which co-occurs with high resolution at fine levels (micro-contrast). I tried downloading but the crops come up as php script files, and PS would not open them for me. The density of the two images is almost identical, in a pixels per file size ratio. Not surprising as the 24ZA is a very good performer, and even show some details not apparent in the Leica image. I'll bet the histos tell an interesting story! There is clearly a tone level difference but also contrast differences, and the very obvious colour transmission differences, these last two significantly affected by the first. [Some of this one sees in each company's other offerings, of course.] Shadow detail is very similar..but the midtones are night and day, and would remain even if tone range was 'equalised' in post.

    BTW, iskaII, that MTF data is highly misleading, being so optimistic that it belongs in a fairy tale. Zeiss would be first to agree I am sure.

    What it does show however is that the lens has consistent contrast from the centre to the edges of the APS-C frame wide open, with the centre at a much higher level. At f8, things are quite different, the midle of the image improves greatly, and we see a significant drop-off in fine detail from mid-frame and edge degradation due to separated lines and the kickup for 40 lpmm sagittal. In a nutshell, optimised for wide open use and centre-based images stopped down, not a landscape lens!

    Why don't Zeiss themselves publish ZA series MTF on their website? Their name is on the lens...I have no idea, but we are poorer for the omission.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Fascinating, Philip! So, if I understand you properly, it is optimized for wide open use and snapshots stopped down at the cost of "proper" performance for landscape? Well that certainly would rule it out for me, as landscape and cityscape are what I do most. Unfortulately, at that price point, I think that customers rightly expect a Zeiss lens to perform for all types of shooting. After all, if it were a lens for FF, its price would be right up there with the big boys, so there is no reason for this lack of all-round performance.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    Though it is speculation at this point due to lack of proper (authentic) data and/or tests (LL had some outrageous $%#^ on the comparison with the Leica Summilux.), wide open (or therabouts) better performance and stopping down leading to image degradation is not new to me. Some of the sharpest lenses I have exhibit this behaviour.

    I would not shoot with the E-Sonnar stopped below f/4 at anytime.

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    Re: Sony Zeiss 24mm f1.8 Sonnar available at B and H

    I tested at f:5.6, which is my most used aperture. So I was unknowingly comparing thislens well outside its sweet spot to others exactly at theirs. This could explain my findings.

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