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  • #16
    Re: C-AF disappointing

    Originally posted by Tordan58 View Post
    Here is a test I did demonstrating the OOF issue.

    Single AF point, positioned so that it aims at the central tip of the central leaf
    Shutter release prio OFF.
    Camera locked focus immediately.
    1/250s, F/4

    The shots really show the issue.
    One last check would be to try it with a different lens, then if thats the same I would take the body back under warranty and have it repaired.
    Dave

    My Flickr

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    • #17
      Re: C-AF disappointing

      That test looks pretty conclusive to me, as Dave said probably worth trying it on another lens to see if it's different. but it's an interesting test I'm probably going to try it myself now as you've made me curious.
      http://www.flickr.com/photos/flip_photo_flickr/

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      • #18
        Re: C-AF disappointing

        Just tried the comparison and I can't see any difference both focus methods were spot on.


        C-AF left. S-AF Right

        [IMG][/IMG]
        Dave

        My Flickr

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        • #19
          Re: C-AF disappointing

          I don't know the camera, but have read somewhere that it has the facility for focus adjustment like the older 4/3 cameras (e.g. E-5) is it possible that S-AF and C-AF use different methods of focusing and the lens/camera combo need fine tuning?
          Iain

          E-M1, E-M1 II, E-M5 II, 7.5, 8-18, 12-40, 25, 40-150, 45, 60, 300

          Website
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          • #20
            Re: C-AF disappointing

            OK so I tested using a focus chart. Distance to subject something like 2 meters. (On a side note this test also shows that the camera horizontal gauge is not calibrated however it does not really impact the test result as I aimed at the middle of the horizontal line, just where it intersects the vertical line).

            S-AF: Pretty much spot on.






            C-AF: Some spread is seen, within +/-1






            C-AF+TR: Spread increases, offset -3





            My Gallery on 500px

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            • #21

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              • #22
                Re: C-AF disappointing

                Originally posted by IainMacD View Post
                I don't know the camera, but have read somewhere that it has the facility for focus adjustment like the older 4/3 cameras (e.g. E-5) is it possible that S-AF and C-AF use different methods of focusing and the lens/camera combo need fine tuning?
                Hi Ian,
                This sound like a long shot to me... If that turned to be true it would be a bad thing.
                /Tord

                My Gallery on 500px

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                • #23
                  Re: C-AF disappointing

                  Originally posted by Tordan58 View Post
                  Hi Ian,
                  This sound like a long shot to me... If that turned to be true it would be a bad thing.
                  /Tord
                  Agreed - thought I'd left that behind when I ditched Canon!

                  In any case, if focus calibration were the issue then it would show in the S-AF shots.
                  Paul
                  E-M1ii, Pen-F and too many lenses
                  flickr
                  Portfolio Site
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                  • #24
                    Re: C-AF disappointing

                    Hi Tordan,

                    Can you please do a total reset of the camera? I mean save your settings, go to factory reset and reload again.

                    In a number of occasions that fixed the problem.

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                    • #25
                      Re: C-AF disappointing

                      Attached. I had to ZIP because of forum file size constraints. The ZIP contains two XML files with the EXIF.
                      Attached Files

                      My Gallery on 500px

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                      • #26
                        Re: C-AF disappointing

                        Originally posted by c12402 View Post
                        Hi Tordan,

                        Can you please do a total reset of the camera? I mean save your settings, go to factory reset and reload again.

                        In a number of occasions that fixed the problem.
                        Hi,

                        How do I do to save the settings, prior reset?
                        /Tord

                        My Gallery on 500px

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                        • #27
                          Re: C-AF disappointing

                          Using the free app Olympus viewer from Olympus. Go to menu-help-update camera. there you have three options for saving, reload, etc,..

                          Save first.

                          BTW, even if it has no effect in this test as it is static, I do recommend to set the reset lens parameter to off in all modes. I assume you also have read the local / global parameters logic in the camera, it's convenient to have in mind.

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                          • #28
                            Re: C-AF disappointing

                            I'm assuming you've done the latest updates on lens & body then?
                            http://dl01.olympus-imaging.com/ww/u.../index02a.html
                            http://dl01.olympus-imaging.com/ww/u.../index02a.html

                            As found here. http://cs.olympus-imaging.jp/en/supp...tware/firm/e1/
                            Ross
                            I fiddle with violins (when I'm not fiddling with a camera).
                            Flickr: https://www.flickr.com/photos/ross-the-fiddler/
                            Cameras: OM-D E-M1 & Mk II, Olympus Stylus 1, OM-D E-M5.
                            Lenses: M.ZD7-14mm f2.8 PRO Lens, M.ZD12-40mm f2.8 PRO Lens, M.ZD40-150mm f2.8 PRO Lens, MC-14, MC-20, M.ZD45mm f1.8, M.ZD12-50, M.ZD60 Macro, M.ZD75-300 Mk II, MMF-3, ZD14-54 II, Sigma 150mm F2.8 APO Macro DG HSM.
                            Flashes: FL36R X2, FL50R, FL50.
                            Software: Capture One Pro 10 (& Olympus Viewer 3).

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                            • #29
                              Re: C-AF disappointing

                              "H fps (from 8 to max)"

                              My understanding is that for C-AF on the mkii you have to have L fps set. In high only the first frame is focussed. Still does not explain the oof flower though.

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                              • #30
                                Re: C-AF disappointing

                                I'm finding that S-AF with 1 focus point is just about spot on every time but on C-AF with 1 focus point and shooting say a 20 frame burst on say a duck in flight you get some sharp then slightly soft then back to sharp again tracking +2 fast .
                                I'm SURE It may well be grabbing the wing tip at times or I move off the bird just a little but I am finding it is more often Me that is at fault .
                                I just did a static test tripod, gimbal 3200sec f4 iso 400 IS on
                                70 shot burst on a lamp post S-af 1 focus point all sharp but 3 a little soft IS on

                                same but C-AF about 5 were just a little soft IS on
                                same again but with IS off about 7 just a little soft
                                All silent electronic shutter Low setting .
                                When using more focus point's thing's can vary quite a lot but for birding (BIF ) you often have to and just risk the right point get the head .
                                My test's today have made me even more happy with the camera / lens Yes it could be a little better But we will always want that
                                Rob.

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