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Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews
  
 
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p.1 #1 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


Zeiss Vario-Tessar T* FE 24-70mm F4 Review
Sony Zeiss Vario-Tessar T* FE 24-70mm F4 ZA OSS reviews:

  1. ERphotoreview review

  2. SLRgear review

  3. Photozone review

  4. Tim Ashley's review

  5. E.J. Peiker's review comparing it to Nikon's 24-70 f/2.8G.

  6. DXOMark review

Sony FE 24-70mm F4 ZA OSS Lens ($1,198)
B&H Photo | Adorama




Mar 06, 2014 at 11:46 PM
mogul
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p.1 #2 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


I certainly have a lot respect for EJ (and Fred) for being brand agnostic enough to get out of their comfort zones and give an honest appraisal of an unfamiliar camera brand.


Mar 07, 2014 at 02:27 AM
waterden
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p.1 #3 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


I was interested to read in E J Peiker's review that he believes the Zeiss FE 24-70/4 to be half a stop brighter than the set aperture suggests (by comparison with the Nikon 24-70/2.8G). The implication is that one of these lenses is effectively F/3.5 at its largest aperture.


Mar 07, 2014 at 08:27 AM
tashley1
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p.1 #4 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


I totally agree with EJ. the Nikkor is probably f2.8, T3.4 whereas the Sony Zeiss is probably f3.4, T4

A sensible bowing to the convergence of video and stills and the anticipated role of the FE. Of course this sort of use wasn't anticipated when the Nikkor was designed.



Mar 07, 2014 at 09:13 AM
theSuede
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p.1 #5 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


No, the Sony is F3.94-F4.02 depending on zoom position.
If you get something else, you're accounting for Sony's exposure compensation. And differences in how the companies "specify" their ISO values...

The new Sony/Zeiss lenses do however have very good (low) T-stop losses. Were the T* coatings improved maybe?



Mar 07, 2014 at 01:11 PM
tashley1
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p.1 #6 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


We'll have to see when DXO measure it but IMHO the Sony's f4 T stop is achieved, as EJ said, by a slightly wider than advertised F...


Mar 07, 2014 at 01:35 PM
serhan_
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p.1 #7 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


Per DXO, 24-70mm lenses:

Nikon 2.8 T3.2
Canon 2.8 T3
Sony Zeiss 2.8 T3.1
Panasonic 2.8 T3
Olympus 2.8 T3.2
Sigma 2.8 T3.1
Tamron 2.8 T3.2

Sony Zeiss FE lenses are hitting same T stops per dxo:
55mm 1.8 T1.8
35mm 2.8 T2.8

Edited on Mar 07, 2014 at 01:47 PM · View previous versions



Mar 07, 2014 at 01:41 PM
tashley1
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p.1 #8 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


My point exactly, but thanks for the data!


Mar 07, 2014 at 01:44 PM
ken.vs.ryu
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p.1 #9 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


1/3rd lighter than the canon 24-70L IS.


Mar 07, 2014 at 01:58 PM
serhan_
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p.1 #10 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


Interestingly newer Canon lenses like 24-70 f4 IS and 35mm f2 IS are also hitting the exact T stops vs older 35mm/50mm/85mm design T's are +.2 lower.


Mar 07, 2014 at 02:17 PM
 

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tashley1
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p.1 #11 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


Well, DXO is now out and it looks like their measure of T stop is poorer than expected at 4.4, though I can't get their widget to give me the extra info as to how and if that varies per focal length...



Mar 07, 2014 at 03:12 PM
serhan_
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p.1 #12 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


Here is dxomark review:
Sony Zeiss Vario-Tessar T* FE 24-70mm F4 ZA OSS lens review: Good value?

T Value 4.4




Mar 07, 2014 at 03:13 PM
serhan_
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p.1 #13 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


There is transmission graph:
Sony-FE-Carl-Zeiss-Vario-Tessar-T-STAR-24-70mm-F4-ZA-OSS---Measurements

tashley1 wrote:
Well, DXO is now out and it looks like their measure of T stop is poorer than expected at 4.4, though I can't get their widget to give me the extra info as to how and if that varies per focal length...




Mar 07, 2014 at 03:33 PM
tashley1
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p.1 #14 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


Thanks, I found it - I was on an iPad earlier and it didn't want to play!


Mar 07, 2014 at 03:40 PM
snapsy
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p.1 #15 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


DxO's perceptual sharpness results are opaque. That said, the Canon 24-70L f/4 IS scores 16P-Mpix on the 22.3MP 5DM3 vs 15P-Mpix for the T* 24-70 on the AA-less 36.4MP A7r. This compared to 29P-Mpix for the Sony 55mm on the A7r. That's not a good showing for the Sony zoom.


Mar 07, 2014 at 03:48 PM
larrison_c
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p.1 #16 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


Looks awesome!


Mar 07, 2014 at 04:06 PM
serhan_
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p.1 #17 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


Roger has a good comparison of 27-70 lenses on Canon 5D III vs D800E at 50mm:
http://www.lensrentals.com/blog/2013/01/a-24-70mm-system-comparison

Per dxo Tamron lens has better sharpness (17MP) compared to Nikon & Sony (both at 15Mpix) which is opposite of Roger's test at 50mm. DXo scores are not very clear. SLRgear tests show the sharpness variation per focal length.



Mar 07, 2014 at 04:13 PM
youhikeneng
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p.1 #18 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


The size of the F4 one is much better than the F2.8 one, also the price is not that high (i think ..)


Mar 07, 2014 at 05:03 PM
tashley1
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p.1 #19 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


On the subject of perceptual MP, there's almost nothing between most of the contenders, they cluster around 15-16mp, and that doesn't tell you much about the overall balance of performance. So a lens with a 15mp score may have a part of it range where it does pretty poorly, such as the wide end of the Nikon 24-70 F2.8

Consequently my field testing tries to ascertain not only how well a lens does at its best or on average but also to discover whether it has any real weak spots. Give me a lens which does "at least well enough" at all focal lengths by F5.6 and has no 'fails' over another with a higher perceptual MP score.

Also, with the Sony 24-70, whilst its apparent perceptual MP score is around half that of the 55mm F1.8 I can happily report that a blind test I did on another forum, with frames of a cityscape (reproduced in my review) only one out of quite a few viewers correctly identified the lenses at 50mm and F8. Sure I gave the zoom a light touch more sharpening and a smudge of clarity and sure I presented the files for viewing at 50% to emulate print size, but I am happy enough after quite a few comparative frames not to bother to change lenses for these kinds of shots nearly all the time. The proof of the pudding is..... etc...!



Mar 07, 2014 at 05:35 PM
snapsy
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p.1 #20 · Zeiss Vario-Tessar T* FE 24-70mm F4 Reviews


tashley1 wrote:
On the subject of perceptual MP, there's almost nothing between most of the contenders, they cluster around 15-16mp, and that doesn't tell you much about the overall balance of performance. So a lens with a 15mp score may have a part of it range where it does pretty poorly, such as the wide end of the Nikon 24-70 F2.8

Consequently my field testing tries to ascertain not only how well a lens does at its best or on average but also to discover whether it has any real weak spots. Give me a lens which does "at least well enough" at
...Show more

The same experiment could probably be executed between a 22MP and 36MP image and the observers not able to tell the difference. It could be argued that the point of using a 36MP camera is to either print natively at larger print sizes or to crop, both of which would require viewing at 100% to accurately gauge the differences. To that end I don't think much can be concluded from your experiment.



Mar 07, 2014 at 05:45 PM
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