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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 17 Mar 2014 (Monday) 18:00
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Thinking about ditching the Canon 24-105 f/4 for the Tamron 24-70 f/2.8

 
Bakewell
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Apr 01, 2014 17:12 as a reply to  @ post 16802427 |  #46
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Talley is apparently having very good luck with his Tamron. That's a good thing. However many people have experienced problems with their Tamron 24-70's including the battery discharge issue, loose optics, slow and inaccurate focusing which may or may not have been caused by the VC system. I experienced all the above and decided, for me, the Canon was a better choice.


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kevindar
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Apr 01, 2014 21:42 |  #47

Talley wrote in post #16798289 (external link)
I still don't see what people talk about focus speed and accuracy.

Mine is just as solid as any Canon I've had. Never misses even in the lowest of light.

Talley, my experience is based on 5 copies of the lens. Your experienced is based on one copy. If it indeed does that for you, thats great. Online/youtube reviews all reiterate that the focus speed of the lens is certainly not up to par with the canon 24-70 II which I own, as well as many other canon fast usm lenses (24-105, 70-200 etc). If for your use, you find the focus speed adequate then thats great. However, when it comes to focus speed, its a fact, and not copy to copy variation issue. Now for focus accuracy, there certainly can be more copy variation (though I doubt it, since I have gone through 5 copies). I further question all your assertions, since I know for a fact, the focus speed of this lens is a fair bit slower than the 24-70II, and slower than 24-105, and this is corroborated by other side by side tests.
I am glad you have a good copy that is working well for you. I find it important however to provide balanced, accurate information, and I strive to do so.
I still maintain, that there is nothing to complain about in terms of optical quality of a properly centered copy of this lens, when its in focus. its very good in center, slightly weaker at 70, but still very good, and excellent stopped down, and very good to excellent to corners at all focal lengths.


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Talley
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Apr 01, 2014 22:11 |  #48

kevindar wrote in post #16803060 (external link)
Talley, my experience is based on 5 copies of the lens. Your experienced is based on one copy. If it indeed does that for you, thats great. Online/youtube reviews all reiterate that the focus speed of the lens is certainly not up to par with the canon 24-70 II which I own, as well as many other canon fast usm lenses (24-105, 70-200 etc). If for your use, you find the focus speed adequate then thats great. However, when it comes to focus speed, its a fact, and not copy to copy variation issue. Now for focus accuracy, there certainly can be more copy variation (though I doubt it, since I have gone through 5 copies). I further question all your assertions, since I know for a fact, the focus speed of this lens is a fair bit slower than the 24-70II, and slower than 24-105, and this is corroborated by other side by side tests.
I am glad you have a good copy that is working well for you. I find it important however to provide balanced, accurate information, and I strive to do so.
I still maintain, that there is nothing to complain about in terms of optical quality of a properly centered copy of this lens, when its in focus. its very good in center, slightly weaker at 70, but still very good, and excellent stopped down, and very good to excellent to corners at all focal lengths.

Understood. Mine has been pretty flawless on my 6D. Haven't used it much on the 5D3.

I completely agree that the focus speed is not up to the standards of any canon USM but it's very silent and it's adequate enough for portrait / my kids. I never use the lens past 2.8 so I cannot comment on it's sharpness. It's plenty sharp for me and I'm very picky.

But I also agree that there are copy variations. The 24-70II I had I don't feel was a stellar copy so I sent it back and this is what made me keep the Tamron. It's performance was spot on so why fix whats not broke. If it gives me issues believe me It'll be out and the Canon will move in.


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kevindar
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Apr 02, 2014 00:45 |  #49

its precisely taking picture of my kids running around Ironically that has given me pause. i was also shooting stationary shots of kids at a school play, and ended up with a bunch of out of focus images, which really sucked, before I changed the lens.
the lens is a dream for video. I would be able to live the speed if the accuracy was good. Ironically, my copy seems to struggle most at the long end, 70mm. It has created a lot of very sharp images for me though.


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Nick_Reading.UK
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Apr 02, 2014 01:26 |  #50

Talley wrote in post #16802427 (external link)
Sorry to hear this. If yours did not match my sharpness on the photo I posted on the 1st page then yes it's not good enough.

Not even close !!!


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Neilyb
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Apr 02, 2014 02:19 |  #51

I only just got my Tammy but it is sharp (after a -10 AF adjustment) wide open. Cannot really comment much more than that expect wide open the vignette is rather strong, soon dissapates after f5.6 though. So landscapes no problem. Portraits I will usually add a vignette anyway so win, win... :) It does not AF anywhere near as fast as my Canon Ls but I expected that, it is certainly faster and quieter than the 28-75... but way bigger too!


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Talley
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Apr 02, 2014 09:38 |  #52

Neilyb wrote in post #16803448 (external link)
I only just got my Tammy but it is sharp (after a -10 AF adjustment) wide open. Cannot really comment much more than that expect wide open the vignette is rather strong, soon dissapates after f5.6 though. So landscapes no problem. Portraits I will usually add a vignette anyway so win, win... :) It does not AF anywhere near as fast as my Canon Ls but I expected that, it is certainly faster and quieter than the 28-75... but way bigger too!

I didn't know this lens can do 5.6... very interesting.

Seems as though mine is stuck on 2.8 and won't budge. Seems like operator error really :cool:


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Talley
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Apr 02, 2014 09:40 |  #53

I need to post up some photos of my lens in the many enviroments I put it through. I haven't used it a ton lately but I cannot get rid of it.... It's simply that good.

Mostly I use it for static shots where I need a good IS to allow me lower than 1/20 on the shutter. It makes for a great museum lens.


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Bakewell
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Apr 02, 2014 09:52 |  #54
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Talley wrote in post #16803942 (external link)
Mostly I use it for static shots where I need a good IS to allow me lower than 1/20 on the shutter. It makes for a great museum lens.

Especially on the low light winner 6D!


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Charlie
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Apr 02, 2014 10:55 |  #55

I am also very happy with my tamron, though it often conflicts with the 50L, the tamron's pretty much my goto lens in landscapes, and when I want to capture a lot of photos, such as an event. It's at least on the same level as talley's in sharpness.... I have some 11x14 and one 20x30 portraits of the kids, tack sharp. AF not as fast as the 24-XXX, but it's still plenty fast.

some folks have low tolerance for third party lenses, and that's fine. If you're one of those folks, just stick with canon, you'll be happy.


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Bakewell
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Apr 02, 2014 12:08 |  #56
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Charlie wrote in post #16804129 (external link)
I am also very happy with my tamron, though it often conflicts with the 50L, the tamron's pretty much my goto lens in landscapes, and when I want to capture a lot of photos, such as an event. It's at least on the same level as talley's in sharpness.... I have some 11x14 and one 20x30 portraits of the kids, tack sharp. AF not as fast as the 24-XXX, but it's still plenty fast.

some folks have low tolerance for third party lenses, and that's fine. If you're one of those folks, just stick with canon, you'll be happy.

Couldn't agree more. Just realize there's a reason for a $1000 difference in price. It's not all based in IQ but also quality control.


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Thinking about ditching the Canon 24-105 f/4 for the Tamron 24-70 f/2.8
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