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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 05 Sep 2015 (Saturday) 04:16
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BigAl007
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Sep 06, 2015 16:51 as a reply to  @ post 17697258 |  #16

From what I was told by a rep from Tamron UK (Intro2020?) the problem is hardware related and was due to the clever auto sensing system in the other lenses not being able to handle the magnification of the 600mm. I was under the impression that the firmwear update was to handle some camera specific AF issues, and had no effect on the VC system. Certainly in my use (glad it was a rental) for an airshow, for aircraft passing across the front of me out to about 60 degrees either side the useable image rate was 0! Outside of that where the camera movement is reduced significantly things started to improve. Head on and going away aircraft were fine.

Alan


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pknight
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Sep 06, 2015 17:04 |  #17

Perfectly Frank wrote in post #17697258 (external link)
This is interesting. I don't know what firmware version my Tammy had, but I bought it in the spring of 2014.
Gee, if the firmware makes a difference, I'd like give the lens another try.

I had mine upgraded in the spring of 2015. I don't think it was available until early 2015. Late 2014 at the earliest.


Digital EOS 90D Canon: EF 50mm f/1.8 II, EF 50mm f/2.5 Compact Macro, Life-Size Converter EF Tamron: SP 17-50mm f/2.8 DiII, 18-400mm f/3.5-6.3 DiII VC HLD, SP 150-600 f/5-6.3 Di VC USD G2, SP 70-200 f/2.8 Di VC USD, 10-24mm f/3.5-4.5 DiII VC HLD Sigma: 30mm f/1.4 DC Art Rokinon: 8mm f/3.5 AS IF UMC

  
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Rick ­ in ­ Ontario
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Sep 06, 2015 18:18 as a reply to  @ post 17697258 |  #18

Spring of 2014 would not have had the new firmware.




  
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daverator
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Sep 06, 2015 18:22 |  #19

BigAl007 wrote in post #17697283 (external link)
From what I was told by a rep from Tamron UK (Intro2020?) the problem is hardware related and was due to the clever auto sensing system in the other lenses not being able to handle the magnification of the 600mm. I was under the impression that the firmwear update was to handle some camera specific AF issues, and had no effect on the VC system. Certainly in my use (glad it was a rental) for an airshow, for aircraft passing across the front of me out to about 60 degrees either side the useable image rate was 0! Outside of that where the camera movement is reduced significantly things started to improve. Head on and going away aircraft were fine.

Alan

I bought and use mine for BIF and while I want to get the update done, my keeper rate is OK until that happens. 0 keepers on aircraft is incredible. Just visit the Tammy thread to see actual results.


Dave
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pknight
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Sep 06, 2015 21:34 |  #20

BigAl007 wrote in post #17697283 (external link)
From what I was told by a rep from Tamron UK (Intro2020?) the problem is hardware related and was due to the clever auto sensing system in the other lenses not being able to handle the magnification of the 600mm. I was under the impression that the firmwear update was to handle some camera specific AF issues, and had no effect on the VC system. Certainly in my use (glad it was a rental) for an airshow, for aircraft passing across the front of me out to about 60 degrees either side the useable image rate was 0! Outside of that where the camera movement is reduced significantly things started to improve. Head on and going away aircraft were fine.

Alan

There have been at least two firmware upgrades. The first one dealt with the problem of the AI servo not changing focus when quickly moving from near to far (or vice-versa). This was the one I sent my lens in for. When arranging the service, I was told that there was a newer upgrade that also addressed the panning issues. As I said, it improved performance.


Digital EOS 90D Canon: EF 50mm f/1.8 II, EF 50mm f/2.5 Compact Macro, Life-Size Converter EF Tamron: SP 17-50mm f/2.8 DiII, 18-400mm f/3.5-6.3 DiII VC HLD, SP 150-600 f/5-6.3 Di VC USD G2, SP 70-200 f/2.8 Di VC USD, 10-24mm f/3.5-4.5 DiII VC HLD Sigma: 30mm f/1.4 DC Art Rokinon: 8mm f/3.5 AS IF UMC

  
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Perfectly ­ Frank
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Sep 07, 2015 02:18 |  #21

Thanks to all who posted about the Tamron. I'll have to check around and see if I can rent the lens that has all the latest & greatest upgrades.

But 4 more days till my Sigma 150-600 C arrives. Can't wait to see how it works out for me.


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pknight
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Sep 07, 2015 11:27 |  #22

Perfectly Frank wrote in post #17697779 (external link)
Thanks to all who posted about the Tamron. I'll have to check around and see if I can rent the lens that has all the latest & greatest upgrades.

But 4 more days till my Sigma 150-600 C arrives. Can't wait to see how it works out for me.

I have a friend who got the Sigma for his Nikon last month, after waiting a very long time. I have not seen shots from it yet, but he says that he likes it. If the Sigma had been available when I was in the market I might have gone that way (I have the Sigma dock for the 30mm 1.4), but it wasn't, and I have had my Tamron for over a year, taking great shots. No regrets.


Digital EOS 90D Canon: EF 50mm f/1.8 II, EF 50mm f/2.5 Compact Macro, Life-Size Converter EF Tamron: SP 17-50mm f/2.8 DiII, 18-400mm f/3.5-6.3 DiII VC HLD, SP 150-600 f/5-6.3 Di VC USD G2, SP 70-200 f/2.8 Di VC USD, 10-24mm f/3.5-4.5 DiII VC HLD Sigma: 30mm f/1.4 DC Art Rokinon: 8mm f/3.5 AS IF UMC

  
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100-400mm alternatives
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