problem with my new 70-200 f/4 IS any advice?

[Benjamin]

If you look at your user manual, it will say that the IS will keep operating for some time even after you remove your finger from the shutter release button. Mine does exactly the same. It should also be noted that before the IS turns off, it's not OK to turn off your camera or remove the lens. The 17-85's IS does sound different than the 70-200.

[BES]

If you look at your user manual, it will say that the IS will keep operating for some time even after you remove your finger from the shutter release button. Mine does exactly the same. It should also be noted that before the IS turns off, it's not OK to turn off your camera or remove the lens. The 17-85's IS does sound different than the 70-200.
<div style="clear: both;"]</div>

Well, maybe I am neurotic after all? I am going to check in the manual, duh! I have never heard that motor noise before and it does sound weird to me, I am so stunned why I did not pick up on this first if that was supposed to be doing it since the beginning? I will keep taking some pictures today and see how it behaves and if I am still unhappy, perhaps check out lens in a store. Thanks so much, you're that best!

[Benjamin]

I have never heard that motor noise before and it does sound weird to me,
<div style="clear: both;"]</div>

You're welcome.


I'm not sure what you mean by a motor noise. Is it the "shhhhh" sound from the USM when you're focusing? Well, the IS does in some way sound close to a USM motor, but it should still be distinguishable. In case if you're still worried, do check out a camera store and find a person who knows enough to answer your concerns. But so far from what you discribed, it seems just like how the IS unit works.

[BES]

I have never heard that motor noise before and it does sound weird to me,
<div style="clear: both;"]</div>

You're welcome.


I'm not sure what you mean by a motor noise. Is it the "shhhhh" sound from the USM when you're focusing? Well, the IS does in some way sound close to a USM motor, but it should still be distinguishable. In case if you're still worried, do check out a camera store and find a person who knows enough to answer your concerns. But so far from what you discribed, it seems just like how the IS unit works.
<div style="clear: both;"]</div>

No, the noise is more of a gargling shhhh, not a smooth shhhh and it goes for more than two seconds after I take my finger off shutter button, more like 4 seconds. This is what worries me, it just does not sound right to me.

[Benjamin]

No, the noise is more of a gargling shhhh, not a smooth shhhh and it goes for more than two seconds after I take my finger off shutter button, more like 4 seconds.
<div style="clear: both;"]</div>

It's not a smooth shhh that's correct. More like what you have described, a gargling shhhh. The time for the IS to turn off varys from immediately to as long as 2~3 seconds, I just checked out mine and it does 2 seconds most of the time. So do find a camera store and check out their 70-200s see how they sound like.


PS: a Canon L lens has IS problems right out of the box does not happen too often at all (i.g. much, much less than having focusing issues). I know you may expect absolute perfection once you spend more than a grand on something, hopefully this is going to give you some peace of mind.


Good luck!

[EdN]

The noise the IS makes is slightlydifferent with each IS lens. I have the 300 F4 IS and there's a faint clunk and buzz; the 24-105 F4 IS has a buzz; and the 70-200 F4 IS has a slightly louder buzz. The IS activates when ever you touch the shutter button and it stays on for several seconds. You can notice the IS work by looking through the view finder, touching the shutter button, and it does take the shake away from the image in the viewfinder. You should take some pictures with the IS activated and check the results. I'm sure everything will be fine. Once you get use to how it works, how it sounds, you won't ever notice it again.

[BES]

Thanks guys, you are so great and responsive. This is my first L lens and I am so new to this, I want it to be a good lens and use it for a while. As you recommend, I will take it to the store and compare with one on their display, maybe it will make me more comfortable. In the mean time, I did not notice any focusing issues, so it started to make me feel better.


That buzz is weird though. Maybe I just will need to get used to it.

[Cushty]

I nearly asked the same question but researched it on the net first.
The 70-200 f4 IS is noisier than other canon IS lenses. I never
realised that any of my other IS lenses made any noise until I got them
all out in a quiet room and checked. You can hear the giros on all of
them but the 70-200 is the only one that actually attracts your
attention. Dont worry - Its OK, Just enjoy the 4 stop advantage that this IS lens delivers. I have had mine at the
Rallycross track for the past 2 weeks and got some awsome sharp images
panning in mode 2


edit:: Look like the forum has cropped these images. I didnt frame them like this!![]


[img]/cfs-file.ashx/__key/CommunityServer.Components.UserFiles/00.00.00.29.93/IMG_5F00_6585_5F00_DxO_5F00_lab_5F00_resized.jpg[/img]


[img]/cfs-file.ashx/__key/CommunityServer.Components.UserFiles/00.00.00.29.93/IMG_5F00_6457_5F00_DxO_5F00_resized.jpg[/img]