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Archive 2015 · Zeiss "Batis" AF lens line to be released for FF E-mount

  
 
douglasf13
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p.9 #1 · Zeiss "Batis" AF lens line to be released for FF E-mount


retrofocus wrote:
Look at Leica M lenses for small size and excellent optical design....so it can't be just the optical design which makes lenses bigger. And as I said above, it can't be the AF either (it might add a bit but not this tremendous increase in size).


Even on film, lots of Leica M lenses have Zone B dips, which is likely part of the compromise.

Like theSuede predicted a couple of years ago, FE lenses are also dealing with the bottleneck of a relatively small mount so close to the sensor. He told us (and showed ray angle diagrams) that most fast FE lenses, particularly wide angles, are going to end up being about the size of their DSLR counterparts+adapters, and that's turning out to be the case. Leica's mount is smaller, but further away from the sensor. Plus, they use a thinner sensor stack. Of course, FE mount still has the advantage of using the area where the DSLR mirror would be for lens elements, so the designs can be potentially better, just not much smaller.

There's a reason that m4/3, Fuji X, Samsung NX, Nikon 1, etc. all use mounts that are relatively large compared to their sensor size. Sony was able to fit a FF sensor into FE mount, but, if they wanted shorter fast lenses, a wider mount would have helped.



Apr 23, 2015 at 08:38 PM
davewolfs
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p.9 #2 · Zeiss "Batis" AF lens line to be released for FF E-mount


douglasf13 wrote:
Even on film, lots of Leica M lenses have Zone B dips, which is likely part of the compromise.

Like theSuede predicted a couple of years ago, FE lenses are also dealing with the bottleneck of a relatively small mount so close to the sensor. He told us (and showed ray angle diagrams) that most fast FE lenses, particularly wide angles, are going to end up being about the size of their DSLR counterparts+adapters, and that's turning out to be the case. Leica's mount is smaller, but further away from the sensor. Plus, they use a thinner sensor stack. Of
...Show more

Or a curved sensor

http://www.freepatentsonline.com/20150077619.pdf



Apr 23, 2015 at 08:56 PM
DavidBM
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p.9 #3 · Zeiss "Batis" AF lens line to be released for FF E-mount


douglasf13 wrote:
Even on film, lots of Leica M lenses have Zone B dips, which is likely part of the compromise.

Like theSuede predicted a couple of years ago, FE lenses are also dealing with the bottleneck of a relatively small mount so close to the sensor. He told us (and showed ray angle diagrams) that most fast FE lenses, particularly wide angles, are going to end up being about the size of their DSLR counterparts+adapters, and that's turning out to be the case. Leica's mount is smaller, but further away from the sensor. Plus, they use a thinner sensor stack. Of
...Show more

The size and location of the FE mount can't be part of the issue viz a viz Leica; when you mount a Leica lens on an E mount camera the ray angles *are exactly the same* since the distance to the sensor is exactly the same; and the size doesn't cause any mechanical vignetting.

When M lenses perform worse on E mount relative to Leica digital it can only be four issues

(1) sensor stack
(2) angle of micro lenses on the sensor
(3) lack of the software correction which Leica does to fix the colour issues
(4) higher resolution of the Sony sensor making the mush easier to see at high mag.




Apr 23, 2015 at 09:05 PM
LightShow
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p.9 #4 · Zeiss "Batis" AF lens line to be released for FF E-mount


davewolfs wrote:
Or a curved sensor

http://www.freepatentsonline.com/20150077619.pdf

Only problem with a curved sensor is that there is not a single lens available on the planet that will work with the sensor, so everything from scratch, including lens designs.

I think Organic sensors will be key to steep ray angle sensitivity, which will usher in tiny lenses.



Apr 23, 2015 at 10:50 PM
TheEmrys
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p.9 #5 · Zeiss "Batis" AF lens line to be released for FF E-mount


I wonder what today's fisheye lens would do on a curved sensor. Fun to think about.

Back to serious stuff.

LightShow wrote:
Only problem with a curved sensor is that there is not a single lens available on the planet that will work with the sensor, so everything from scratch, including lens designs.

I think Organic sensors will be key to steep ray angle sensitivity, which will usher in tiny lenses.




Apr 23, 2015 at 11:00 PM
Jeff Kott
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p.9 #6 · Zeiss "Batis" AF lens line to be released for FF E-mount


jctriguy wrote:
That fact that you are basically the only one here looking for ultra small AF lenses might suggest why no company has gone down that route. People who want small have m4/3 or cell phones or P&S. Most people don't seem concerned about size if it comes at the expense of quality or price.


I can tell you for a fact that Retrofocus is not the only one here looking for small AF lenses and who would not be satisfied with the IQ from m4/3 or cell phones.



Apr 23, 2015 at 11:54 PM
Taylor Sherman
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p.9 #7 · Zeiss "Batis" AF lens line to be released for FF E-mount


TheEmrys wrote:
I wonder what today's fisheye lens would do on a curved sensor. Fun to think about.



Mostly it'd just be out of focus. The curvature is in a different dimension than the fisheye distortion you're thinking of.




Apr 24, 2015 at 12:03 AM
edwardkaraa
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p.9 #8 · Zeiss "Batis" AF lens line to be released for FF E-mount




Taylor Sherman wrote:
Mostly it'd just be out of focus. The curvature is in a different dimension than the fisheye distortion you're thinking of.



Correct. Fisheye lenses have excellent performance across the frame because they're not rectilinearly corrected. A rectilinear wide would indeed work better on a curved sensor.



Apr 24, 2015 at 12:08 AM
johnctharp
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p.9 #9 · Zeiss "Batis" AF lens line to be released for FF E-mount


douglasf13 wrote:
There's a reason that m4/3, Fuji X, Samsung NX, Nikon 1, etc. all use mounts that are relatively large compared to their sensor size. Sony was able to fit a FF sensor into FE mount, but, if they wanted shorter fast lenses, a wider mount would have helped.


OT: It'll be interesting to see what Canon does with full-frame mirrorless- the EF-M mount is a near copy of the E-mount. That is, whenever they're prepared to actually compete in the space



Apr 24, 2015 at 12:17 AM
bernardl
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p.9 #10 · Zeiss "Batis" AF lens line to be released for FF E-mount



As far as I know, Zeiss lenses are put together in the Cosina factory (not to be confused with Sony branded Zeiss).


Correct, at least the 2 Otus and 135mm f2.0 are manufactured by Cosina and are labelled "made in Japan".

Cheers,
Bernard





Apr 24, 2015 at 12:21 AM
alundeb
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p.9 #11 · Zeiss "Batis" AF lens line to be released for FF E-mount


Steve Spencer wrote:
Another way to consider this size issue is to compare them to the Zeiss ZF lenses that are most similar. The Batis 25 f/2 is substantially fatter than the ZF 25 f/2 (81mm vs. 71mm) but with an adapter would be substantially shorter (78mm vs. 99.5mm), but since diameter contributes to volume more than length the ZF actually has a bit smaller volume on a FE mount camera than the Batis (393900 cubic mm vs. 401900 cubic mm). The Batis would be substantially lighter but you wouldn't be saving much in terms of size. You get much the same
...Show more

Because of the design of the Batis lenses, it makes more sense to use the diameter of the focus ring rather than the maximum diameter for volume comparisons. It is then 78 mm diameter, not 81. Not a big difference, but enough to make them equal in volume to the lenses you compare to, for all practical purposes.

One could always wish for smaller lenses, but in the end the perfomance will determine everything regarding the success of these lenses, that is my bet.



Apr 24, 2015 at 01:40 AM
twoeye
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p.9 #12 · Zeiss "Batis" AF lens line to be released for FF E-mount


Phillip Reeve wrote:
I am quite impressed by the FE 2/28 which is very small and just 200g. It has severe distortion but for my nature images this doesn't matter and it has sharper corners than the heavier, bigger and slower Zeiss Distagon 2.8/28.
When it matters I can correct it easily and pay with a little resolution for it.

I think this is a very good trade for the very small and light lens which is very good in those aspects which matter to me. But I also think that it's great to have a choice between a very small Sony
...Show more

Size comparision Batis 2/25 vs. FE 2/28:

http://dl.dropboxusercontent.com/u/41926915/Tester/Batis.jpg

In the discussion about size, Sony has allready shown that AF wides can be much smaller than the Batis 2/25. Possible tradeoffs are distortion and LoCA. I wish the Batis was a little smaller, but weight is OK.

I cancelled my preorder of the FE 2/28 until I see how the Batis performs. At 3x the price it got to be really good. If it has a drawing similar to the ZE/ZF Distagon 2/25 and 2/28 I am going for it.



Apr 24, 2015 at 03:29 AM
Matt Grum
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p.9 #13 · Zeiss "Batis" AF lens line to be released for FF E-mount


twoeye wrote:
Size comparision Batis 2/25 vs. FE 2/28:


Without the hood it's a bit closer:

http://www.mattgrum.com/fm/Batis.png

The lens barrels are pretty fat, that's for sure, but the 2/25 is relatively light, which combined with it's larger volume is going to make it feel surprisingly light for it's size.

At the end of the day I'm more concerned with weight, weight distribution and length than diameter.



Apr 24, 2015 at 05:18 AM
swldstn
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p.9 #14 · Zeiss "Batis" AF lens line to be released for FF E-mount


I't took me awhile to catch up to this thread but I guess I will just re-state some thoughts I had on dpreview.

I was surprised to see the Batis announcement of FE lenses with AF similar in concept to the Touits for APS-C. Does that mean that Loxia concept is dead? I had hoped for the 25 or 21mm Loxia to go with the 35/2 and 50/2 but will that ever happen now with the Batis 25/2?

I agree that an 85/1.8 and 25/2 are needed I just don't want another theme introduced to distract from a consistent set of lenses. This is fragmenting the market in the sense that the feel and approach to these lenses are all different. I'm a big fan on consistency when it comes to lens families. The ZM family with 15, 18, 21, 25, 35, 50, and 85 is what I want to see for Sony, by Zeiss, with the Loxia, or even if it had been Batis I could understand but what is Zeiss up to?

I understand its two different products with different user focus literately (AF vs MF) but having two lenses in two product lines is less preferable to me than 4 in one product line. As I mentioned before Touit has 3, Loxia 2, Batis 2, and Otis 2. Will it be 2018 before any of these get to 5 (21-25, 35, 50, 85, 135) lenses in any of these family? That's not what I thought I was buying into when I got the two Loxia lenses. I ended up abandoning the Touits on Fuji for that reason. Too littlt and it was taking too long. Fortunately Fuji wasn't taking that approach.

I agree I can adapt and when I first rushed into Sony for the A7R I planned to adapt my ZM lens (own 2.8/28, 2/35, 2/50, 1.5/50, 4/85 and CV 4.5/15) but of course the quality just wasn't there. So I was thrilled when I saw the Loxia and jumped in and got both the 2/35 and 2/50. It would be great if the next is a 21mm. I own the ZE 21mm and 18mm on my Canon and its a focal length I really like (have 14mm on my Fuji-X as well). If that happens I will be all set from 21 to 50. Then I could see buying a Batis 1.8/85 for portraits since AF is really nice there.

Above that I have the ZE 100mm f/2 and Nikon 135mm f/2.8 AIS that adapt really well.

Why can't we get Zeiss to commit to a roadmap? Should I buy Batis without knowing what's coming next? Did that for Loxia and I may learn to regret it. And if there are only two members of the Loxia family how good wil the resale value be. This process for me has been frustrating because I really wanted Loxia to continue.

Maybe I can get lucky and have Zeiss make some kind of statement about the future of Loxia. After all in interviews they stated that more would be coming but are they backing away from this position or continuing to endorse it?

Edited on Apr 24, 2015 at 07:30 AM · View previous versions



Apr 24, 2015 at 05:40 AM
retrofocus
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p.9 #15 · Zeiss "Batis" AF lens line to be released for FF E-mount


DavidBM wrote:
The size and location of the FE mount can't be part of the issue viz a viz Leica; when you mount a Leica lens on an E mount camera the ray angles *are exactly the same* since the distance to the sensor is exactly the same; and the size doesn't cause any mechanical vignetting.

When M lenses perform worse on E mount relative to Leica digital it can only be four issues

(1) sensor stack
(2) angle of micro lenses on the sensor
(3) lack of the software correction which Leica does to fix the colour issues
(4) higher resolution of the Sony sensor making
...Show more

+1. Thanks for both of the comments to my earlier reply - I agree with David BM here since I am using successfully several Leica M mount lenses on my A7R with a simple Fotasy adaptor ring. The problem is based on the sensor and sensor stack which gets more visible towards the wider range of focal lengths. I don't see that for small size lenses a larger lens mount is needed. My impression is that those lenses which we are seeing currently for the E-mount are first gen models and might later on be succeeded by smaller and as powerful image-quality wise lenses. The latter ones need a different design and more technical improvement (including AF) which might need more time. I don't see any reason why this would not be possible technically.



Apr 24, 2015 at 06:16 AM
amplexis
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p.9 #16 · Zeiss "Batis" AF lens line to be released for FF E-mount


swldstn wrote:
Why can't we get Zeiss to commit to a roadmap? Should I buy Batis without knowing what's coming next? Did that for Loxia and I may learn to regret it. And if there are only two members of the Loxia family how good wil the resale value be. This process for me has been frustrating because I really wanted Loxia to continue.
Maybe I can get lucky and have Zeiss make some kind of statement about the future of Loxia. After all in interviews they stated that more would be coming but are they backing away from this position or
...Show more

think of all the people who live their whole lives in simple piety because they have faith in the market or god. be glad that Zeiss and Sony obey the commandment to be fruitful and multiply. Darwin is pleased.

be glad to wait for Zeiss to show the performance of these two lenses and be grateful. i am dancing with delight that Zeiss is offering the next two lenses i wanted. the announcement gives me a clear plan. i know now what i will keep and what i will sell. i don't feel that the Batis lenses will look out of place next to my 35 2.8 or 55 1.8. i have a ZF 25 2.8 that i will keep for it's MFD and a few other attributes. i often feel it is gangly on the A7r but i love the results.



Apr 24, 2015 at 06:51 AM
DavidBM
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p.9 #17 · Zeiss "Batis" AF lens line to be released for FF E-mount


Gulp. Batises pre-ordered. I can always cancel...


Apr 24, 2015 at 06:53 AM
Cliff L.
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p.9 #18 · Zeiss "Batis" AF lens line to be released for FF E-mount


swldstn wrote:
Why can't we get Zeiss to commit to a roadmap? Should I buy Batis without knowing what's coming next? Did that for Loxia and I may learn to regret it.


Get out and take pictures instead of worrying that your accessories don't match...



Apr 24, 2015 at 07:02 AM
ecarlino
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p.9 #19 · Zeiss "Batis" AF lens line to be released for FF E-mount


swldstn wrote:
I't took me awhile to catch up to this thread but I guess I will just re-state some thoughts I had on dpreview.

I was surprised to see the Batis announcement of FE lenses with AF similar in concept to the Touits for APS-C. Does that mean that Loxia concept is dead? I had hoped for the 25 or 21mm Loxia to go with the 35/2 and 50/2 but will that ever happen now with the Batis 25/2?

I agree that an 85/1.8 and 25/2 are needed I just don't want another theme introduced to distract from a consistent set of lenses.
...Show more

it sounds like your problem is, as you stated several times, you "rushed' into things.
I'm not sure why your expectations were what they were, but we are all watching sausage being made. and yes, it may be until 2018 or beyond that we have several complete lines, that's the way it goes.

I'm not an expert on manufacturing, but I imagine there's a certain method to the madness of building out production and getting it right and even though I'd love for every line to have 6 great primes already, that's not practical.

at this point, it's possible none of us are perfectly happy - I've spent too much time on FM being upset about the choices made at the 35mm foc len, but the reality is that between Zeiss and Sony (and hopefully soon enough Sigma) they are releasing new lenses (and lines) at a relatively rapid pace.

I also think that the success of the a7, full-mount-mirrorless, surprised everyone - and they've probably changed directions a bit over the past 2 years. It highlights the risks of getting it wrong (e.g. Zeiss with Touit) and why the mfgs won't rush into any new format.

it appears Zeiss will have an AF and MF lineup and Sony will have 2 or 3 levels of primes and 2 (3?) levels of zoom. In a few yeas, there will be a ton of choices for everyone. you are bummed about having bought 2 lenses - imagine having invested a tens of millions dollars (or however much it costs) on two new LINES of lenses!

in the meantime, don't get your panties in a wad, because you're an early adopter. I'm still unsure of the direction which is why I've been buying used or renting before going down the aisle. with Nikon, I owned and sold $30k + of stuff but I bought quality and it held its value (especially the glass). Sony resale prices are not as stable yet, which is why one should be more cautious or tempered with their expectations.

Edited on Apr 24, 2015 at 09:23 AM · View previous versions



Apr 24, 2015 at 07:18 AM
swldstn
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p.9 #20 · Zeiss "Batis" AF lens line to be released for FF E-mount


molson wrote:
Get out and take pictures instead of worrying that your accessories don't match...


Its not about matching. Is there no one that thinks of their lenses as tools? Consistency of ergonomics, approach to EV, and color and rendering are the important things in a lens FAMILY. Does anyone use or own power tools or hand tools? How would you feel about a screw driver set with all different handles or a drill bit set where the turned in different directions?

ZM, ZE, ZF,and even ZA lenses are FAMILY of lenses where you can change out a 21 for 25 or a 35 for 28 and feel your getting the same look and USAGE model. Only if lenses feel the same do you use them as quickly and as seamlessly from shot to shot.

To me they are tools not ornaments. A Christmas tree has 20 different ornaments, a lens line has a concept and a theme and is useful if its adhered to and covers a broad range of focal lengths. Even Sony knows it. When I look at a FE 16-35, FE 24-70, FE 55, FE 35/1.4 these lenses share a concept and a roadmap. The G lenses are a little different but as least similar.



Apr 24, 2015 at 07:23 AM
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