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For under 300 USD, this lens is amazing. I get about equal or better IQ than the 450 dollar e-mount kit lens and 2 additional stops of light at the long end (about 1 and 2/3 at the wide end). It's a screw drive a-mount, which I have an LA-EA4 adapter for in the mail tomorrow. It's currently MF only on an LA-EA3 on my a7ii, much much lighter and way sharper than my Sigma 24-70 f/2.8 (which I paid 500 for), and I'm just hoping the AF is going to be good enough to take it to a wedding I have on Saturday.

 

If anyone is interested, I can post some comparison pics. It would also be a good opportunity to test out a new softbox (80cm x 80cm square gridded).

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Many 28-70 were great. Also 28-105. It seems

as if the push to get 24 on the wide end was a

fall from grace for midrange zooms. You got 5

extra mm on the long end, where it's harmless.  

With such a lens, using the SLT AF adapter, I

strongly recommend using the AF Microadjust

feature. It's usually worth it !  

  

&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& 

 

  

I have a Tokina ATX 28-70/2.8, reputed to be

the least desirable of old fast midranges. If my

lens is [pun alert!] the bottom of the barrel, the

better ones must all be quite terrific. FWIW my

"least desirable" member of the tribe happens

to also be the smallest .... I find that desirable.  

  

I posted about it, with pix, earlier in this forum: 

 

http://www.sonyalphaforum.com/topic/4500-28-7028-tokina-atx-a-mount-on-a7-mkii/

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Here are the tests between the kit, Sigma, and Tamron that I have. It's pretty unscientific, but I think the results are fairly clear.

 

Sony FE SEL2870 (kit lens) @ 70mm f/5.6

 

7sjsFkV.jpg

 

Sony 100% crop

 

SeOrUis.jpg

 

Sigma 24-70mm f/2.8 EX DG HSM @ 70mm f/5.6

 

LkPZb76.jpg

 

Sigma 100% crop

 

h7SLJPc.jpg4

 

Tamron AF 28-75mm f/2.8 XR Di LD @ 75mm f/5.6

 

q2vr5WJ.jpg

 

Tamron 100% crop

 

eYbO5NB.jpg

 

 

Conclusion: Sony has the best light transmission and excellent center sharpness, but with a maximum aperture of f/5.6 at full zoom leaves it struggling to focus in lower lighting conditions. The Tamron is weaker in light transmission, but also has a tiny bit of extra zoom reach and is just as sharp as the Sony, with the addition of a maximum fixed aperture of f/2.8. The Sigma is very quiet when focusing (not loud like the Tamron), but it has the worst sharpness of all three and is the heaviest of the bunch (and most expensive).

 

Sony's kit lens is a winner in the price war, because the Tamron is a screw drive and needs an La-ea4 adapter to work (or an a mount camera). Tamron kicks butt for under 300 bucks for the lens itself and over a decade old. Sigma is... disappointing at best. It's quiet, good for video?

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  • 1 month later...

Just had some free time and gave the Tamron another whirl on an a7rii. Cat was almost cooperative.

 

Tamron @ 75mm f/2.8

 

aPhyPKa.jpg

 

 

100% crop

 

0dO7AnB.jpg

 

Tamron @ 75mm f/5.6

 

4sasvwN.jpg

 

100% crop

 

CL5zoF3.jpg

 

 

I adore the image quality out of this tiny little sub-300 USD lens, but I really must sell it. Anyone have a good home for this and an LA-EA4?

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  • 4 years later...

Hi,

I am comparing the Tamron 28-75 F2.8 with the Sony Zeiss 24-70mm SSM lens. I have an A6000 and would buy a LA-EA5 to make this work. I know Zeiss are expensive, but ebay has some for under $400. Any thoughts on which one I should get? 

Also, with the LA-EA5, will these lenses do phase-detection AF?

 

Best,

 

 

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  • 4 weeks later...
On 11/17/2020 at 6:01 AM, mailash said:

Hi,

I am comparing the Tamron 28-75 F2.8 with the Sony Zeiss 24-70mm SSM lens. I have an A6000 and would buy a LA-EA5 to make this work. I know Zeiss are expensive, but ebay has some for under $400. Any thoughts on which one I should get? 

Also, with the LA-EA5, will these lenses do phase-detection AF?

 

Best,

 

 

There are 2 things that you need to take into account. According to what you say, you have an APS-C e-mount A6000 and you would want to

1- Buy a 300 USD LAEA-5 adapter

2- Buy a DSLR full frame lens of 400 USD

Well I think you make multiple mistakes here.

The first one being that the LAEA-5 won't bring you no advantage against a LAEA-3 on your A6000 body

Second would be, why would you use FF 24mm or 28mm  which would give you an equivalent of 36mm to 42mm field of view ? And moreover they are heavy DSLR FF lenses.

You would shell out loads of money that you could put in a good native e-mount lens being FF or APS-C... Just my 2 cents but seems to me to be a really bad move. And keep in mind A6000 won't take any advantage of Sony LAEA-5 adapter expecially not AFing with Minolta AF lenses.

 

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