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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 07 Jun 2012 (Thursday) 04:23
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New 24-105, Faulty IS????

 
Simpleboy
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Jun 07, 2012 04:23 |  #1

So i upgraded from a 7D + 17-55 to a 5DIII + 24-105, and I really do think I have problems with my IS on the 24-105.

With the 7D I'd be getting sharp photos half the time at around 0.5s at 17mm and pretty much all the time at 1/5th then at 55mm I'd get sharp photos at about 1/10th of a second. Yet with the 5DIII at 24mm I struggle to get them at 1/40th, and to be honest, I can handhold that. And at 105mm, I've never got anything sharp slower than about 1/80th a second, which is not even a stops improvement from what i can get handheld.

Heres a quick sample at 24mm, IS off first, IS on after both at 1/40th of a second, SOOC other than the crop.

IS OFF

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IS ON
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I dont really have any other samples yet, cause generally they dont get back home as I delete them. But I feel a trip back to the camera store is on the table shortly, but just wanted to check I surely should be getting better stabilization than that?


As a side note, it has been freezing here recently, as you may be able to tell from the snow, would this in anyway impact IS operation?



  
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Lowner
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Jun 07, 2012 04:25 |  #2

Can you hear the IS working?


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Simpleboy
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Jun 07, 2012 04:29 |  #3

Lowner wrote in post #14543739 (external link)
Can you hear the IS working?

Yes, it makes a similar but quieter noise than my 70-200 f4 IS.




  
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Lowner
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Jun 07, 2012 04:31 |  #4

Then maybe its just the unique circumstances of that shot. You need to experiment with other scenes, other combinations of f/number and shutter speeds.


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pepeto2001
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Jun 07, 2012 04:38 |  #5

I've exactly the same "problem"... upgraded from 7D+15-85 to 5d3 + 24-105, and the IS is really horrible!!, is seems to work much worse than the one in 15-85....

I've seen that when you see the focus point jumping a little bit down once taken the photo, the IS didnt worked well.... it happens sometimes, other it seems to work fine.

It definitvely doesnt work as well as the one in 15-85 lens...




  
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Simpleboy
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Jun 07, 2012 04:48 |  #6

Lowner wrote in post #14543745 (external link)
Then maybe its just the unique circumstances of that shot. You need to experiment with other scenes, other combinations of f/number and shutter speeds.

I'm not sure and really do think it may be the temperature as today, basically all of my IS shots were throwaways. When I was out shooting the temperature was about 2degrees C (about 35F), though this only affected the 24-105, my 70-200 was fine. However, now inside, just shooting inside in a heated room, it seems pretty good, and im getting down to 1/20th at 105mm which is about what I expect.




  
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KCY
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Jun 07, 2012 05:18 |  #7

Did you leave time for the IS to spin up? I have heard that IS does need to to spin up and stabilize otherwise it might induce some blur of its own.

see here:
https://photography-on-the.net …/showthread.php​?t=1170019


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cfcRebel
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Jun 07, 2012 09:49 |  #8

Simpleboy wrote in post #14543731 (external link)
.... SOOC other than the crop.

I don't see you mentioned how much you cropped. Can you post the same image without any cropping? Just resize it to fit the forum rule.


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Simpleboy
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Jun 07, 2012 23:51 |  #9

KCY wrote:
Did you leave time for the IS to spin up? I have heard that IS does need to to spin up and stabilize otherwise it might induce some blur of its own.

Yes, The shots were taken about 5s apart, IS OFF first flock it on, give it 2-3s to settle, took the next pic.

cfcRebel wrote in post #14544589 (external link)
I don't see you mentioned how much you cropped. Can you post the same image without any cropping? Just resize it to fit the forum rule.

They should be 100% crops, heres the rough scene, with each sample taken from pretty much in the middle

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Anyways, Went out again today with it, and despite it seeming to work last night, today it had other ideas.

At 105mm, at 1/30s, handheld, IS OFF
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and with IS ON
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And honestly, I'd expect the exact oposite from that result.

EDIT,

Two more samples, Also both 100% crops, (ie no resizing)

IS OFF
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IS ON
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clarnibass
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Jun 08, 2012 06:35 as a reply to  @ Simpleboy's post |  #10

Assuming there isn't something else causing this, I would go to the store and try a different one (or several) to check if it's just this lens.


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cfcRebel
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Jun 08, 2012 10:42 |  #11

The IS on that lens seems working backwards. I'll bring the camera+lens back to the store, and try another copy of the 24-105 on the camera, shoot on the spot and check whether or not the problem goes away.


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Simpleboy
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Jun 09, 2012 22:47 |  #12

Went back to the store, tried another copy. Better, but not great results. They agreed I should be getting better stabilization. So its on it's way back to Canon and I'm borrowing a second hand 24-70L till I get it back.




  
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pepeto2001
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Jun 10, 2012 03:07 |  #13

I've the same problem as you, simpleboy, i'll probable test the tamron 24-70 f2.8 stabilizer to see if it is better..




  
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pepeto2001
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Jun 10, 2012 03:10 |  #14

I'm thinking it is about the combination 5d3 + 24-105.... the camera produces VERY HIGH vibration when the mirror goes up, and the lens are not capable of compensate it....

In fact, if you use 2 second timer + mirror lockup settings, although you wont see what you are photographing during that 2 seconds, the stabilizer of the lens will work AS IT SHOULD and the image should be MUCH better than not using mirror lockup setting...




  
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j-dogg
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Jun 10, 2012 03:17 as a reply to  @ pepeto2001's post |  #15

I have the 5dc and 24-105L I can regularly pull off 1/6th second no motion blur.......you should see it working at 105mm through the lens. Sounds like you did the right thing by sending it off to the big house.


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New 24-105, Faulty IS????
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