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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 13 Mar 2014 (Thursday) 06:52
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Tammy 150-600 or 400mm f5.6

 
fogboundturtle
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Mar 13, 2014 12:29 |  #16

Larry Weinman wrote in post #16755781 (external link)
If a lens does not focus properly on a moving subject it affects IQ.

I have seen a post about changing a custom function in the 7D to solve the AF issue with the Tamron. The AF is fast and reliable on my 5D3.


Canon 5D Mark III, Canon 70D, Canon EF 24-105L, Tamron 150-600mm, Tamron 70-200 F2.8 DI VC USD, Sony A7r, Sony FE 55mm F1.8

  
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Larry ­ Weinman
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Mar 13, 2014 12:39 |  #17

If you look at the Fred Miranda thread I posted you will see that there are many people involved and many lenses, not just one. It is not my intent to trash the lens if that is what you are thinking. I responded to the OP because there is a known problem that involves many users on certain camera bodies with this lens. Tamron has been notified and there will probably be a firmware fix, at least I hope there will be. The folks involved in the Fred Miranda thread are for the most part excellent photographers. This is not a case of some newbie fumbling around trying to learn how to use a long lens. That is why I advised the OP to wait until this glitch is corrected.


7D Mark II 6D 100mm f 2.8 macro 180mm f 3.5 macro, MP-E-65 300mm f 2.8 500mm f4 Tokina 10-17mm fisheye 10-22mm 17-55mm 24-105mm 70-300mm 70-200 f 2.8 Mk II 100-400mm Mk II 1.4 TCIII 2X TCIII 580EX II 430 EX II MT 24 EX Sigma 150-600

  
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Larry ­ Weinman
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Mar 13, 2014 12:40 |  #18

fogboundturtle wrote in post #16755789 (external link)
I have seen a post about changing a custom function in the 7D to solve the AF issue with the Tamron. The AF is fast and reliable on my 5D3.

It works well on a 5D3 and also on a 6D, the problem is with a 7D and 1D Mk IV


7D Mark II 6D 100mm f 2.8 macro 180mm f 3.5 macro, MP-E-65 300mm f 2.8 500mm f4 Tokina 10-17mm fisheye 10-22mm 17-55mm 24-105mm 70-300mm 70-200 f 2.8 Mk II 100-400mm Mk II 1.4 TCIII 2X TCIII 580EX II 430 EX II MT 24 EX Sigma 150-600

  
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Grizz
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Mar 13, 2014 13:16 |  #19

Larry Weinman wrote in post #16755781 (external link)
If a lens does not focus properly on a moving subject it affects IQ.

Yes and IF is a small word with a big meaning. ALL is a little bigger word with a bigger meaning also.


Larry you keep referring to the FM thread. If you look at the poll results there are 97 votes 19 people of the 97 say they returned or will return the lens. And the reasons for returns are not AF specific, they may have returned the lens for any number of reasons.
That means 78 people are keeping it. (my mathematical skills are impressive!)

If you read the thread there are only a few posters that actually claim to have the problem. There are a lot of posts but not many individual complaints. If fact one poster claimed that he lent it to a few friends with 7Ds one friend had no problems with AI servo on his, the other had problems on one of his 7Ds and no problems on his other 7D. So to state that it does not work on all 7Ds is absurd unless the fellow that posted this is making it up. Along with a few folks here that have 7Ds and seem to be doing all right with it. Along with the fact that I have tried it with a 7D and it worked just fine Tracking in AI servo. Unless I'm making it up also. Now are the folks who say they have problems with it wrong? I very much doubt it. There seems to be a problem somewhere but where is the question. So my issue is with the statement that this lens fails with ALL 7Ds. Because that does not seem to be the case no matter what thread you may point to.

I don't want to turn this into an argument with you, I'm sure your intentions are honorable and well intentioned as are mine. :)


Craig * Canon 7D Mark II * 60D * 10D * Tamron SP 150-600 f/5-6.3 Di VC USD * EF 400 5.6L USM * EF 17-40 4.0L USM * EF 70-210 4.0 * EF 28 2.8 * EF 50 1.8 MK1*Flickr (external link)

  
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Grizz
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Mar 13, 2014 13:26 |  #20

And to the OP.

If you have concerns with your 7D and the Tamron you really have 2 choices, buy it from a reputable dealer with a good return policy and try it with your 7D. If it works and your happy Great! If not you return it. Or Just get the 400L if 400 is going to suit your reach needs. Its really that simple. :)


Craig * Canon 7D Mark II * 60D * 10D * Tamron SP 150-600 f/5-6.3 Di VC USD * EF 400 5.6L USM * EF 17-40 4.0L USM * EF 70-210 4.0 * EF 28 2.8 * EF 50 1.8 MK1*Flickr (external link)

  
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FEChariot
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Mar 13, 2014 15:23 |  #21

MalVeauX wrote in post #16755788 (external link)
Just to add to this, you're basing this on what, a review of a single copy from one person? All these guys with the same lens and same cameras who are not having this issue, they just... don't matter? Come on...

Very best,

There are a few people in the site he linked to having the issue with 7D's: one was 7D and 1D4. I have my eye on this lens but don't have an immediate need for it so I'm going to keep an ear out.

Grizz wrote in post #16755987 (external link)
And to the OP.

If you have concerns with your 7D and the Tamron you really have 2 choices, buy it from a reputable dealer with a good return policy and try it with your 7D. If it works and your happy Great! If not you return it. Or Just get the 400L if 400 is going to suit your reach needs. Its really that simple. :)

To the OP: If you do go this route and you have focusing issues or not. Let us know.


Canon 7D/350D, Σ17-50/2.8 OS, 18-55IS, 24-105/4 L IS, Σ30/1.4 EX, 50/1.8, C50/1.4, 55-250IS, 60/2.8, 70-200/4 L IS, 85/1.8, 100/2.8 IS L, 135/2 L 580EX II, 430EX II * 2, 270EX II.

  
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Larry ­ Weinman
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Mar 13, 2014 16:44 |  #22

I think that there is something to the servo problem that some people have mentioned. In another thread asking for sequential shots you can see that the problem exists. I'm not against the lens. I like the idea of a zoom of that focal length that can be hand held and I would like to get one but not until I know that the servo issue has been taken care of. I know that Tamron has asked at least one person to send their 7D with the 150-600 to them. They are aware of the issue and I expect they will resolve it very soon.


7D Mark II 6D 100mm f 2.8 macro 180mm f 3.5 macro, MP-E-65 300mm f 2.8 500mm f4 Tokina 10-17mm fisheye 10-22mm 17-55mm 24-105mm 70-300mm 70-200 f 2.8 Mk II 100-400mm Mk II 1.4 TCIII 2X TCIII 580EX II 430 EX II MT 24 EX Sigma 150-600

  
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GaryS1964
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Mar 13, 2014 17:01 |  #23

Take a look at the sight below. They have only tested it on a 5D3 but I compared the 400 on a 60D vs the Tamron on a 5D3 and the Tamron looks sharper. Reviews say the Tamron is really good on a FF Canon but the difference is less noticeable on a crop Canon. I also compared both at 400mm f/5.6 on the 5D3 and the difference is small but IQ goes to the Canon. I will probably buy the Tamron. It's a little less money, I like the versatility of a zoom, and on my 5D3 the IQ advantage of the Canon is not great enough to tilt me to the Canon.

http://www.the-digital-picture.com …O-12233-Sample-Crops.aspx (external link)


Canon 5D Mk iii, Canon 7D, Tamron 70-300 Di VC, Tamron 150-600, Canon Nifty Fifty, Canon 100mm f/2.8 L Macro IS, Canon 24-105 F/4 L, Canon 70-200 f/2.8 L IS ii, Canon 100-400 f/4.5-5.6 L IS ii, Canon 430EX ii, YONGNUO RF-602 Wireless Remote Control

  
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TustinMike
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Mar 13, 2014 17:29 |  #24

Well, here's just another data point for your reference: I was really interested in the Tamron for my main thing (motorsports photography), but after some brief but intense research, ended up going with the 400 f/5.6 and so far (it's only been a few weeks) am very happy with the choice. I think that I'll be glad over the long run for the relative compactness (compared to the 150-600), the IQ, the lighter weight AND the 77 mm ring diameter means that filters and lens caps are compatible with my 24-70 and 70-200 lenses, which is an easily-overlooked factor. I think that for me, for now, I don't really need that extra reach out to 600. I can use a TC if I really do (though then I don't know if the AF will work, with my 7D body, so will have to pre-focus I think).

Anyway, just my 2 cents.

Good luck with your decision !


All New Year, All New Sig !

  
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Mike55
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Mar 13, 2014 20:26 |  #25

Grizz wrote in post #16755739 (external link)
And my post was to address the OP's main concern Not AF issues where he plainly stated So he can certainly look at the images in the links I offered and make a decision based on what his eyes see as far as IQ goes. If he thinks 400 is the max he will use then I would go with the 400L 5.6 if he wants the longer reach then I'd go with the Tamron.

Since when was AF not an IQ issue?


6D | 70D | 24-105 L IS | 17-40 L | 300 F4 L IS | 50 1.8 II | 1.4x II | LR5 | HV30 | bug spray | wilderness
Gallatin National Forest, Montana (external link)/Lassen Volcanic NP Campgrounds (external link)

  
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clarnibass
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Mar 13, 2014 23:59 |  #26

Grizz wrote in post #16755965 (external link)
Along with the fact that I have tried it with a 7D and it worked just fine Tracking in AI servo.

One of the problems is that some people claim a problem (i.e. "doesn't work in AI Servo") but don't really explain what the problem is.
Does it not try to focus at all?
Does it focus and then doesn't refocus?
Does it not focus only when moving between very close and very far away targets (some people mentioned this as the issue)?

Can you check your 7D with this lens in those scenarios to see if it always works? Especially focus on something close (even close to MFD), then, while leaving the AF button pressed, move to a distant target (even close to infinity), then back to close focus. Works just as it is supposed to?

If this works fine, then it is very strange that only some cameras of the same model have an issue with this lens. I guess it's hard to say whether the difference is with the body or the lens. Even if it's something with certain bodies, the lens should still work with them of course...


www.nitailevi.com (external link)

  
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FEChariot
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Mar 14, 2014 01:35 |  #27

clarnibass wrote in post #16757286 (external link)
One of the problems is that some people claim a problem (i.e. "doesn't work in AI Servo) but don't really explain what the problem is.
Does it not try to focus at all?
Does it focus and then doesn't refocus?
Does it not focus only when moving between very close and very far away targets (some people mentioned this as the issue)?


Nothing first hand here but from what I am reading is that it will initial lock focus when you press the button (back button or shutter button that you have assigned for AF on), but it doesn't keep following focus after that. Once again first hand experience would be great here to confirm or shoot this down.


Canon 7D/350D, Σ17-50/2.8 OS, 18-55IS, 24-105/4 L IS, Σ30/1.4 EX, 50/1.8, C50/1.4, 55-250IS, 60/2.8, 70-200/4 L IS, 85/1.8, 100/2.8 IS L, 135/2 L 580EX II, 430EX II * 2, 270EX II.

  
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Snydremark
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Mar 14, 2014 02:04 |  #28

clarnibass wrote in post #16757286 (external link)
...
Does it not focus only when moving between very close and very far away targets (some people mentioned this as the issue)?

It's this.

FEChariot wrote in post #16757367 (external link)
Nothing first hand here but from what I am reading is that it will initial lock focus when you press the button (back button or shutter button that you have assigned for AF on), but it doesn't keep following focus after that. Once again first hand experience would be great here to confirm or shoot this down.

First hand; as I've been shooting with it from release day on a 7D:

As long as you have locked on to your subject, it follows just fine. It's the above mentioned big swing from something near and in focus to something far out and way out of focus already. In that case, you have to "bump" your focus to get it to run again.

It's not optimal and isn't the way other lenses behave, but under 'normal' shooting conditions one doesn't regularly do that with servo. It's normally used for tracking a single subject for the duration; and if a further/nearer subject is desired, focus is usually reset for that subject anyway.

There is also some wonkiness if you hit the focus ring during AF in servo; it will cancel the AF and you have to, again, "bump" focus by releasing and re-engaging the AF button. Still, not difficult to do.

For fast acquisition of a subject, it's pretty slow at full zoom (600mm) but it's pretty equal to the 100-400; it certainly won't keep up with the f/5.6 there. At 400, the Tamron's pretty snappy.


- Eric S.: My Birds/Wildlife (external link) (7D MkII/5D IV, Canon 10-22 f/3.5-4.5, Canon 24-105L f/4 IS, Canon 70-200L f/2.8 IS MkII, Canon 100-400L f/4.5-5.6 IS I/II)
"The easiest way to improve your photos is to adjust the loose nut between the shutter release and the ground."

  
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clarnibass
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Mar 14, 2014 02:41 |  #29

Snydremark wrote in post #16757407 (external link)
It's this.

Some of the posts suggest it's a more serious issue... but maybe they are just not so clear.

I'm curious what happens if you point the the lens at AI Servo to the floor relativley close to you (far enough for MFD) and then slowly move all the way so it gradually goes from the closest AF to possibly infinity AF. Does it work then?
If it's only a jump between close and far focus that causes the problem, I'm wondering if someone noticed how close and far it has to be?

Snydremark wrote in post #16757407 (external link)
For fast acquisition of a subject, it's pretty slow at full zoom (600mm) but it's pretty equal to the 100-400; it certainly won't keep up with the f/5.6 there. At 400, the Tamron's pretty snappy.

Since you end with "At 400, the Tamron's pretty snappy", can you clarify if when you say "it's pretty slow at full zoom (600mm) but it's pretty equal to the 100-400" you mean the tamron at 400mm or at 600mm? If it's the latter, then I understand it's faster than the 100-400mm when both are at 400mm?
Also curious, if I remember the Tamron stays at f/5.6 a little over 400mm, maybe up to around 430mm or a bit less. does the AF speed stay the same until it change from f/5.6 to f/6.3?


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Grizz
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Mar 14, 2014 03:34 as a reply to  @ clarnibass's post |  #30

Mike55 wrote in post #16756916 (external link)
Since when was AF not an IQ issue?

Since the OP stated he knew about AF and AP differences and wanted to know about IQ differences between the 2

is there that much of a diffence in IQ, I understand the different apetures and AF differences, my main query is with IQ.

So I read it as when both lenses are in focus are there IQ differences. So in that case AF is not an issue when discussing IQ between the two. I don't think its wrong to assume the OP was asking the question about 2 properly focused lenses and the IQ differences between them. Why would he ask about one properly focused lens and the other out of focus?

And you misquoted me in your post, in fact it looks like you just pasted a bunch of my replies together without context. Not sure why?


Craig * Canon 7D Mark II * 60D * 10D * Tamron SP 150-600 f/5-6.3 Di VC USD * EF 400 5.6L USM * EF 17-40 4.0L USM * EF 70-210 4.0 * EF 28 2.8 * EF 50 1.8 MK1*Flickr (external link)

  
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Tammy 150-600 or 400mm f5.6
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