OM-D IBIS Explanation

Discussion in 'Olympus Cameras' started by thenextpage, Apr 30, 2015.

  1. thenextpage

    thenextpage Mu-43 Regular

    89
    Oct 13, 2014
    Hello friends,

    I have both the E-M5 & E-M1. With the E-M5 I use IS-1, and for the E-M1 I use IS-1 as well - although I still am not clear on the difference between IS-1 (all direction) & IS-4 (auto) on the E-M1. If someone can explain why and when to use either IS-1 and IS-4 on the E-M1, please do.

    In addition, I've read from several sources that it is not advisable to use the IS when the camera is not moving - for example when it's on a tripod. I've also read that IS shouldn't be used when the shutter is above a certain speed, in correlation with the focal length of the lens being used (I've seen some formula for this relation of shutter speed to lens focal length indication that the IS should be turned off). Anyways, why should the IS not be used when it's not needed? What's the harm?

    Thanks!
     
  2. eteless

    eteless Mu-43 All-Pro

    Jun 20, 2014
    IS-4 will detect if you're panning and turn off IS in that direction so you can get a nice directional background blur with sharp subject (GRID on this forum has many fantastic examples of this, and many other awesome things...).
    https://www.mu-43.com/threads/75986/
    https://www.mu-43.com/threads/75329/
    https://www.mu-43.com/threads/72241/


    With Olympus cameras it's pretty much irrelevant, this advice dates back to when optical stabilization was being introduced on film cameras and they would induce movement as they didn't turn off. Later generations improved and detected when tripods were being used. As for turning IS off... it saves a tiny amount of battery; in real world use it's not a practical concern with sensor shift as the IS needs to be powered to hold the sensor still (and thus still uses some power), Optical IS on some lenses can use more power as it needs to move heavier glass elements and it can be more of an issue.
     
    Last edited: Apr 30, 2015
  3. thenextpage

    thenextpage Mu-43 Regular

    89
    Oct 13, 2014
    OK, thank you eteless. With this being the case, I won't worry about IBIS for standard shooting, and will just keep it on - since the only concern is power consumption. I just thought that there was a reason some folks seemed so adamant about turning it off when not needed - such as on a tripod or at high shutter speeds. Anyways I carry several backup batteries at all times so small amounts of power isn't a concern.
     
  4. thenextpage

    thenextpage Mu-43 Regular

    89
    Oct 13, 2014