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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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It would help to know what equipment you're using.
And subject but it looks like birds
So are you using a tripod or hand holding, if using a tripod switch the IS off.
my camera is a canon 400D and the lens in question is a Sigma 120 - 400 sorry i should have put that in above
Yes i use a good Tripod and i turn IS off when its on the tripod
Typically, what shutter speed are you selecting for this lens at maximum focal length?
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
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 ".....
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....
Quote: Or use a cable release.
What has that got to do with the IS?
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.
Quote: Realistically you can only gain a stop or two
That very much depends on the person holding the camera.
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?
Thanks everyone for all your replies i appreciate it
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