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Tamron 17-70mm f/2.8 Di III-A VC RCD announced
#1
https://www.tamron.jp/en/product/lenses/b070.html

The MTFs look pretty good actually
Chief Editor - opticallimits.com

Doing all things Canon, MFT, Sony and Fuji
#2
You know you'll have it in da lab before long, Klaus. Smile

This is going to be an interesting battle, this one vs. the Sony 16-55.
#3
RXD...
It even renders nicely, judging from those sample images. Nice APS-C lens.
#4
If the MTF is good, I wonder whether it might obscure the 'old' Sony 16-70mm f/4... 308g vs 525g, heavier but not so much, and a stop faster - 200g are not a big deal in exchange of f/2.8. The only pitfall is that you lose 1mm at the wide end. On the other hand, if you have the Sony 10-18mm, the range is covered.

So I'm longing to see tests (including decentering assessment).
stoppingdown.net

 

Sony a6300, Sony a6000, Sony NEX-6, Sony E 10-18mm F4 OSS, Sony Zeiss Vario-Tessar T* E 16-70mm F4 ZA OSS, Sony FE 70-200mm F4 G OSS, Sigma 150-600mm Æ’/5-6.3 DG OS HSM Contemporary, Samyang 12mm Æ’/2, Sigma 30mm F2.8 DN | A, Meyer Gorlitz Trioplan 100mm Æ’/2.8, Samyang 8mm Æ’/3.5 fish-eye II | Zenit Helios 44-2 58mm Æ’/2 
Plus some legacy Nikkor lenses.
#5
I've seen remarks along the line of "smear the front lens of this Tamron with vaseline, and it's still going to do better than the Zeiss 16-70". Smile Not sure how well founded these are. An ex-coworker of mine has the Zeiss 16-70, I got to ask him how that lens fares.
#6
Considering the dozens of reviews I've read about the SEL1670, to me it's clear that the lens has a problem of variability. Mine is mostly good, with some decentering issues. But it's for sure the less satisfying one in my arsenal; so if a reasonable replacement comes out...
stoppingdown.net

 

Sony a6300, Sony a6000, Sony NEX-6, Sony E 10-18mm F4 OSS, Sony Zeiss Vario-Tessar T* E 16-70mm F4 ZA OSS, Sony FE 70-200mm F4 G OSS, Sigma 150-600mm Æ’/5-6.3 DG OS HSM Contemporary, Samyang 12mm Æ’/2, Sigma 30mm F2.8 DN | A, Meyer Gorlitz Trioplan 100mm Æ’/2.8, Samyang 8mm Æ’/3.5 fish-eye II | Zenit Helios 44-2 58mm Æ’/2 
Plus some legacy Nikkor lenses.
  


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