When to switch on the IOS in the XF18-55

Discussion in 'Native Lenses' started by ReneBee, Jul 30, 2017.

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  1. ReneBee

    ReneBee FujiXspot Regular

    109
    Oct 20, 2013
    Nieuwegein, The Netherlands
    René
    Hello all,
    Is there a rule of thumb when to switch on (or off) the IOS?
    In this case on my recently acquired XF18-55?
    I've read that that with high(er) shutter speeds, the IOS does more harm than good
    When switched on and a shutter speed of around 1/120 I see bad focus on the right-hand side of the image.
    The IOS does work, a shot with a shutter speed of 1/20 looks much better.
    Thanks.
    René.
     
  2. ReneBee

    ReneBee FujiXspot Regular

    109
    Oct 20, 2013
    Nieuwegein, The Netherlands
    René
    crop_middle. I think that there's more wrong with this lens.
    Even with IOS switched off, the edges are far from sharp when it is set to infinity.
    Have a look at the attached crops. The middle is ok, but the edges are horrible.
    Is this a case: back where it came from? Crop_upper_left.
    Thanks in advance for your feedback.
    Rene.
     
    Last edited: Jul 30, 2017
  3. KillRamsey

    KillRamsey Super Moderator

    Feb 15, 2013
    Hood River, OR
    Kyle
    That does not look right. One question, though: Did you set it to manual focus and crank it all the way out, or did you AF on a spot out there? I ask because when I first got my (used) XF27, I did it manually, and everything was a little soft. I came here to ask, and found out that the lens can focus a little past infinity. Once I went back out and AF'd on the horizon, the shots were sharp.

    That doesn't solve your center-vs-edge issue, though, and you're right, I own one of those and that looks wrong. I'll post something from mine, hang on.
     
  4. KillRamsey

    KillRamsey Super Moderator

    Feb 15, 2013
    Hood River, OR
    Kyle
    Ngorongoro Crater, Africa. 18-55, shot from a moving truck, XE2, OIS probably on. Look at the ridge line and the tree, all the way from lower left to the top right corner: crisp.

    18425578149_d27eef5ebb_b. TOMK3035 by gordopuggy, on Flickr

    As for when to use it, I turn it off if I'm relatively still. If I'm in a moving vehicle or (more commonly for me) shooting while biking, I turn it on. If I'm standing still and I need to shoot slower than 1/60, I use it. If I'm going long exposure (rare with this lens), I'd turn it off. General rule: if my feet are on the ground, it's off. If my feet are on pedals or on a vehicle's floorbaord, it's on.
     
  5. ReneBee

    ReneBee FujiXspot Regular

    109
    Oct 20, 2013
    Nieuwegein, The Netherlands
    René
    Hello Kyle, thanks for your answers.
    I used the autofocus and targeted the af-box somewhere above the house in the second crop. The foliage is almost parallel and well within dof (f:7.1)
    The example you're showing here is of a quality I expect from this lens, but obvious not from my copy. Thanks for sharing.

    I've reported it to the store I bought it from and I'm sending it it for check-up/repair.
    René.
     
  6. KillRamsey

    KillRamsey Super Moderator

    Feb 15, 2013
    Hood River, OR
    Kyle
    You did the right thing.
     
  7. mma2

    mma2 New to FujiXspot

    5
    Feb 27, 2017
    Sacramento, CA
    Rick
    I agree w/KillRamsey, you did the right thing.

    As for when I use OIS with my 18-55...I just returned from a month-long RV vacation to British Columbia, the Canadian Rockies, Waterton Lakes NP, and Glacier NP. About 2,000 images, of which two-thirds were shot with the 18-55 (used on both my X-T2 and X-Pro1). All of my 18-55 images were very sharp at shutter speeds ranging from 1/5 to 1/700 sec, hand-held. OIS was always on, never turned it off.

    Hope your 18-55 is repaired soon. It is a wonderful lens.

    Best Wishes,

    Rick
     
  8. ReneBee

    ReneBee FujiXspot Regular

    109
    Oct 20, 2013
    Nieuwegein, The Netherlands
    René
    Thanks for your reply Rick.
    That was one of the reasons I traded my 35mm/1.4 for this lens: small but a very good image quality.
    I will post the progress here.
    René.
     
  9. bs1946

    bs1946 FujiXspot Regular

    42
    Mar 12, 2016
    I don't own the 18-55mm, so I can't if there are any unique problems with it's OIS system but I owned two Panasonic OIS lenses and two Olympus cameras with IBIS (In Body Image Stabilization). The advice from both companies, and I believe Fuji as well, is to turn off OIS or IBIS when the camera is mounted on a tripod.

    However, in the two plus years that I owned my Olympus E-M10, I never turned the 3-Axis IBIS off, even when using a tripod, and I never saw any negative effects from doing that.
     
  10. ReneBee

    ReneBee FujiXspot Regular

    109
    Oct 20, 2013
    Nieuwegein, The Netherlands
    René
    Thanks for your reply bs1946.
    Yes, you're right I've read that too.
    But it definitely seems that my copy of this lens has a problem, looking at the example Kyle posted in #4.
    It with Fuji now. I hope I'll get it back soon.
    René.