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Image Stabiliser

Mike_Smith Plus
10 430 1 United Kingdom
25 Mar 2011 8:13PM
Im not happy with the sharpness of my shots, im wondering if my image stabiliser is working or not might seem daft question but how can i check if its working or not Thankyou

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RogBrown 10 3.1k 10 England
25 Mar 2011 8:23PM
It would help to know what equipment you're using.
Paul Morgan 16 18.9k 6 England
25 Mar 2011 8:25PM
And subject but it looks like birds Smile

So are you using a tripod or hand holding, if using a tripod switch the IS off.
Mike_Smith Plus
10 430 1 United Kingdom
25 Mar 2011 8:25PM
my camera is a canon 400D and the lens in question is a Sigma 120 - 400 sorry i should have put that in above
Mike_Smith Plus
10 430 1 United Kingdom
25 Mar 2011 8:27PM
Yes i use a good Tripod and i turn IS off when its on the tripod
User_Removed 13 17.9k 8 Norway
25 Mar 2011 8:32PM
Typically, what shutter speed are you selecting for this lens at maximum focal length?
Mike_Smith Plus
10 430 1 United Kingdom
25 Mar 2011 9:07PM
I dont always use it at full focal length but typically around 200. Also regardless of me not been happy with sharpness how do you know if the IS is working if i do try it handheld
cameracat 13 8.6k 61 Norfolk Island
25 Mar 2011 9:32PM

Quote:how do you know if the IS is working if i do try it handheld

As you half press the shutter release, At the same time as the camera locks focus, You should see the image become stable......!!!

Because if you can hand hold a lens at 200mm and above without any movement at all, Without IS.....Your a very lucky person, Or built like " Arnie ".....Grin

Even on a good solid tripod you have to be very careful not to get slight movement, Try using faster shutter speeds, 1/300s or 1/400s Minimum on tripod with no IS, Or use a cable release.

Or get a shorter lens and move closer to the subject....Wink
tomcat 12 6.4k 15 United Kingdom
25 Mar 2011 9:48PM

Quote:Or use a cable release.

Coleslaw 12 13.4k 28 Wales
25 Mar 2011 9:50PM
What has that got to do with the IS?
sherlob Plus
11 2.9k 129 United Kingdom
25 Mar 2011 10:00PM
I found that in general use I needed shorten the shutter speed when hand holding my 100-400. I simply couldn't get sharp results at the kind of shutter speeds I thought possible with the IS engaged - it was as if the IS gave me a false sense of security. Furthermore when using such a lens on a tripod I found that engaging mirror lock up allowed me to get the best of the lens a longer shutter speeds.
Paul Morgan 16 18.9k 6 England
25 Mar 2011 11:45PM

Quote:Realistically you can only gain a stop or two

That very much depends on the person holding the camera.
jimthistle73 13 2.4k 1 United Kingdom
26 Mar 2011 12:17AM
The Nikon 70-200 VR gives me a far greater hit rate than my old 80-200 (non VR). I still tend to stick to the old 'shutter speed the same as the focal length' rule but it does give lattitude.

As a test, why not try shooting five shots at a (relatively) slow shutter speed using the IS, followed by five shots without it and compare the results?
Mike_Smith Plus
10 430 1 United Kingdom
26 Mar 2011 4:13PM
Thanks everyone for all your replies i appreciate it

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