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Thread: How to test if IS is working?

  1. #1

    Default How to test if IS is working?

    Hi all,

    Please tell me how to test if IS of a lens is working or not. Let get an example of 17-55mm.

    Thank you.

  2. #2

    Default Re: How to test if IS is working?

    Take a shot with slow shutter speed with IS on and off and compare?

  3. #3
    Moderator Octarine's Avatar
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    Default Re: How to test if IS is working?

    When you half-press the shutter you should be able to hear a whizzing sound and the image in viewfinder might shake for a tiny moment. When moving the camera after half-pressing the shutter the image in viewfinder seems to follow a little bit delayed. It's caused by the IS which tries to keep the image stable despite moving camera.
    EOS

  4. #4
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    Default

    Shorter focal length might be a bit harder to see the IS effect, but those from 100mm and above, having IS turn on/off is quite obvious when u are half pressing and view through your viewfinder. So long as you dun try to test this while mounted on a tripod
    Equipment: D800|D700|11-16|28-75|105 Micro VR|50 F1.4G|85 F1.8G
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  5. #5
    Senior Member ZerocoolAstra's Avatar
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    Default Re: How to test if IS is working?

    If the stabilization is sensor-shift-based, you won't be able to tell by looking through the viewfinder.

    But since TS specifically said "IS", perhaps can presume that he meant Canon's implementation, which is lens-based.
    Exploring! :)

  6. #6
    Moderator Octarine's Avatar
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    Default Re: How to test if IS is working?

    Quote Originally Posted by ZerocoolAstra View Post
    But since TS specifically said "IS", perhaps can presume that he meant Canon's implementation, which is lens-based.
    I think the initial post is pointing very clearly towards a lens-based stabilization solution. Unless there is a new sensor format of 17x55mm
    EOS

  7. #7
    Senior Member ZerocoolAstra's Avatar
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    Default Re: How to test if IS is working?

    Quote Originally Posted by Octarine View Post
    I think the initial post is pointing very clearly towards a lens-based stabilization solution. Unless there is a new sensor format of 17x55mm
    oh yeah... he said "... IS of a lens"....
    ok my bad. Didn't read properly
    Don't know if the DSLRs employing sensor-shift stabilisation (sony, pentax, etc) have a 17-55 lens in their range. I would assume so.
    Exploring! :)

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