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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 28 May 2011 (Saturday) 06:47
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Tamron's VC . Is that shake normal ?

 
Alarm
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May 28, 2011 06:47 |  #1

Hello. I just received the Tamron 70-300 with VC.
I read its manual and it mentions that :

"With the vc mechanism there are occassions when the image in the viewfinder blurs after the shutter button is pressed down halfway"

Fine, this "blur" is actually not a blur but more like a shaking. The problem is that it does it every time i try to refocus after about 1 second. Surely this is not silent at all.
So if i press the shutter button halfway, i get that shaking, when i release it, that shaking comes again. After 1-2 seconds when i try to focus somewhere else, that shaking comes again. I do understand that its the VC mechanism, but i've never noticed something similar with the IS.

Is this normal ?


Furthermore, the lens has full time manual function. In the manual it says :
"First set the focus mode to AF, You can adjust the focus manualy while turning the focus ring in the shutter button pressed lightly"

Bellow this it mentions also : "When set on AF mode, interfering with focusing ring may cause serious damage to the lens mechanism"

This sentence says tells me in other words to use the full time manual with caution as it may damage the mechanism. Do i understand it wrong ?

I thought that i just AF and while having the shutter halfpressed i can override with the focus ring. Not ?


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Sirrith
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May 28, 2011 06:49 |  #2

Its normal. The canon 55-250 does the same thing as do some other lenses.

As for the full time manual, they simply mean don't turn the ring when the camera is actually trying to focus on something. You're fine turning it once the AF mechanism has stopped working.


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Accessoire
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May 28, 2011 08:05 |  #3

man, I hate Tamron's VC, returned a lens because of it
it was slow and made shooting with it a pain in the tookus =/




  
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Alarm
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May 28, 2011 08:24 |  #4

Accessoire wrote in post #12493660 (external link)
man, I hate Tamron's VC, returned a lens because of it
it was slow and made shooting with it a pain in the tookus =/

I guess you are talking about the USD , how can the VC be slow ? I am talking about the VC


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Accessoire
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May 28, 2011 08:27 |  #5

could be a combination of the two
but the copy I had would shake and shake so that it was difficult to even see what I was trying to focus on, I was missing shots that needed to be taken quickly because of it.
maybe it was just me? I don't know, but it bugged me to no end. =/




  
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TTuna ­ Eye
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May 28, 2011 08:29 |  #6

I have had great luck with that lens. The VC is a bit noisy but I have not noticed the image shake. I shhot it hand held a lot and really like the images I am getting.


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Daskid
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May 28, 2011 10:41 |  #7

Yeah, that VC shaking is normal. I had it on my brand new 17-50. I was annoyed by it the first time I got it. But I had gotten used to it after awhile.


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May 28, 2011 10:42 |  #8

TTuna Eye wrote in post #12493712 (external link)
I have had great luck with that lens. The VC is a bit noisy but I have not noticed the image shake. I shhot it hand held a lot and really like the images I am getting.

No you got me wrong. I did not say that the images are produced shaken. I haven't tested yet this part. I am talking about how it looks when you look through the view finder.

While you look inside and half press the shutter button , you notice a small shake that happens. This according to the manual is normal, but how normal is it this to occur every time i focus ?


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May 28, 2011 10:52 |  #9

Alarm wrote in post #12494220 (external link)
No you got me wrong. I did not say that the images are produced shaken. I haven't tested yet this part. I am talking about how it looks when you look through the view finder.

While you look inside and half press the shutter button , you notice a small shake that happens. This according to the manual is normal, but how normal is it this to occur every time i focus ?

Perfectly normal


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May 28, 2011 14:00 |  #10

Ok, i feel more relaxed now :) Thank you !


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TTuna ­ Eye
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May 28, 2011 22:36 |  #11

I think the shake is due to the gyros spinning up. I looked for it today but didn't notice it. Got some cool shots though!


6D, 60D, 100L, 24-105L, Sig 150-500, nifty 50, EF-S 60mm, Tam SP70-200 f/2.8 Di VC, Underwater gear T2i in a Watershot housing with Inon S2000 strobes.

  
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GaryS1964
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May 28, 2011 22:51 |  #12

TTuna Eye wrote in post #12493712 (external link)
I have had great luck with that lens. The VC is a bit noisy but I have not noticed the image shake. I shhot it hand held a lot and really like the images I am getting.

I agree. I've shot soccer games in AI Servo mode. It tracks well and keeps the subject in focus until you take the shot.


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Jun 07, 2011 14:53 |  #13

TTuna Eye wrote in post #12497023 (external link)
I think the shake is due to the gyros spinning up. I looked for it today but didn't notice it. Got some cool shots though!

Sorry for asking again. Didn't notice it you mean that it does not exist or you haven't noticed it in the past and it is there ?

I am not concerned about the IQ here, but if the motors are running well. I did some tests again this weekend and find it sometimes annoying to see that shake in the viewfinder every time i was releasing the shutter button for 2-3 seconds and seeing it again once i was pressing it again.

This phenomenon disappears when VC is off and also if i keep on focusing continuesly without any pause on different objects. :rolleyes:


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led ­ hed
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Jun 07, 2011 15:06 |  #14

i had a 17-55 canon f2.8 that would make the view 'jump', when i pressed for focus, quite considerably i thought, so i returned it for another and my new one doesn't do that.
i know mine isn't a tamron, but my IS was no good.


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Tamron's VC . Is that shake normal ?
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