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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 20 Sep 2014 (Saturday) 11:27
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Thinking of selling my 100-400 and getting the Tam 150-600

 
bob_r
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Sep 20, 2014 13:57 |  #16

One thing to consider since you're getting a 7DII is that with that camera you can add a 1.4X TC to your 100-400 and it will still auto-focus. That would put you very close to the 600mm. Since the Tamron is an f/6.3 lens, you would lose AF if you added a TC to it. IMHO, the 100-400 handles a TC very well and the only problem has been losing AF when using a TC. Here's a sample shot taken with a 100-400 and a Sigma 1.4X TC (manual focus).


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gjl711
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Sep 20, 2014 14:01 |  #17

bob_r wrote in post #17167415 (external link)
One thing to consider since you're getting a 7DII is that with that camera you can add a 1.4X TC to your 100-400 and it will still auto-focus. That would put you very close to the 600mm. Since the Tamron is an f/6.3 lens, you would lose AF if you added a TC to it. IMHO, the 100-400 handles a TC very well and the only problem has been losing AF when using a TC. Here's a sample shot taken with a 100-400 and a Sigma 1.4X TC (manual focus).

The Tammy, like the Sigmas report back to the camera f/5.6 so even though the real aperture is f/6.3, the body still auto focuses as it believes the lens is at f/5.6.


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bob_r
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Sep 20, 2014 14:16 |  #18

gjl711 wrote in post #17167420 (external link)
The Tammy, like the Sigmas report back to the camera f/5.6 so even though the real aperture is f/6.3, the body still auto focuses as it believes the lens is at f/5.6.

I've never owned a long Tammy, so wasn't aware that it could AF with a 1.4X. Thanks for the info.


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Sep 20, 2014 14:18 |  #19
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Tanglefoot47 wrote in post #17167178 (external link)
???Here's the deal my wife ordered me the new 7D MKII and I am so happy. Now I would love to have more reach and I am thinking the Tamron with this new 7D might work out very well. I had a Tamron for a short time and liked it but sold it. Is this a crazy move???

go for it!

i did the same and it was the best choice I made!


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gjl711
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Sep 20, 2014 14:26 |  #20

bob_r wrote in post #17167451 (external link)
I've never owned a long Tammy, so wasn't aware that it could AF with a 1.4X. Thanks for the info.

It can't on bodies able to AF with f/5.6 lenses. On the f/8 bodies it should AF.


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DreDaze
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Sep 20, 2014 14:26 |  #21

bob_r wrote in post #17167451 (external link)
I've never owned a long Tammy, so wasn't aware that it could AF with a 1.4X. Thanks for the info.

it might not...but you're putting the 1.4X on the 100-400mm to get to 560mm...where you wouldn't need to for the tammy, or sigma

with the announcement of the sigma 150-600mm's was also an announcement that they were coming out with a 1.4X TC that would allow for AF at f8...so it might allow you to put the 1.4TC on it, and still get AF...although none of that really matters with the ability of the 7DII to do it anyways


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Sep 20, 2014 15:17 |  #22

gjl711 wrote in post #17167470 (external link)
It can't on bodies able to AF with f/5.6 lenses. On the f/8 bodies it should AF.

I think it would try is the best we can expect. Results will vary. It will in fact be beyond f/8. So even if the camera is folled into trying it might not work well.

I never got my old Bigma (50-500mm) to AF well on a 1D with a 1.4x. Tons of hunting.
YMMV

Lastly, I am interested in getting my hands on the Tamzooka to test drive, but now the whole prospect got more complicated with the announcement of the two 600mm Sigma's !!


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Drum
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Sep 20, 2014 16:44 |  #23

it might depend whether or not you like the push-pull on the 100-400? I had the 100-400 and traded it in a while ago have since bought the Tamzooka- although I find the Tammy good in sharpness IQ and AF speed, the 100-400 was much faster getting to the focal length and back, also depending on what you are shooting there is no I.S. mode for Panning unlike the 100-400. However apart from those 2 gripes about it The Tamron is a fantastic lens for me......... actually gripe #3 is there is no lens pouch in the box like the 100-400. (But it is €500 less expensive and 200mm longer!!!!!)




  
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Sep 20, 2014 16:57 |  #24

gjl711 wrote in post #17167470 (external link)
It can't on bodies able to AF with f/5.6 lenses. On the f/8 bodies it should AF.

On my T1i it can in good light. Not with a 2X, though.


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Sep 20, 2014 17:43 |  #25

Drum wrote in post #17167651 (external link)
it might depend whether or not you like the push-pull on the 100-400? I had the 100-400 and traded it in a while ago have since bought the Tamzooka- although I find the Tammy good in sharpness IQ and AF speed, the 100-400 was much faster getting to the focal length and back, also depending on what you are shooting there is no I.S. mode for Panning unlike the 100-400. However apart from those 2 gripes about it The Tamron is a fantastic lens for me......... actually gripe #3 is there is no lens pouch in the box like the 100-400. (But it is €500 less expensive and 200mm longer!!!!!)

grab the end of the lens, and use it as a push pull...it's a lot quicker


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Tanglefoot47
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Sep 20, 2014 18:17 |  #26

Drum wrote in post #17167651 (external link)
it might depend whether or not you like the push-pull on the 100-400? I had the 100-400 and traded it in a while ago have since bought the Tamzooka- although I find the Tammy good in sharpness IQ and AF speed, the 100-400 was much faster getting to the focal length and back, also depending on what you are shooting there is no I.S. mode for Panning unlike the 100-400. However apart from those 2 gripes about it The Tamron is a fantastic lens for me......... actually gripe #3 is there is no lens pouch in the box like the 100-400. (But it is €500 less expensive and 200mm longer!!!!!)

Push pull I like seems natural bw!




  
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Sep 20, 2014 18:27 |  #27

Tom Reichner wrote in post #17167328 (external link)
I think you may find the 3rd post on page one to be particularly insightful, as it is based on the actual personal experiences of someone who really knows their stuff.



I'm with Tom. EJ Peikers' word is gold in my book.


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ed ­ rader
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Sep 20, 2014 23:45 as a reply to  @ Scrumhalf's post |  #28

a tc added to a long, slow zoom would never give me acceptable results.


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Sep 21, 2014 00:06 |  #29

ed rader wrote in post #17168168 (external link)
a tc added to a long, slow zoom would never give me acceptable results.

are you talking about a TC on the 100-400L?


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ed ­ rader
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Sep 21, 2014 00:13 |  #30

DreDaze wrote in post #17168181 (external link)
are you talking about a TC on the 100-400L?

yes. or the tamron or the sigma


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