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Thread: Ghosting of photos

  1. #21
    Senior Member SilverPine's Avatar
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    Default Re: Ghosting of photos







    From above sample photo, I was not using flash shutter speed 1/250 second, it was from another photographer using flash and I think he was shooting horizontal. The ghosting of the photo was result from another photographer's flash, not from my camera.
    Canon 5D II, 20-35 f/2.8L, 28-80 f/2.8L, 70-200 f/4L IS, 100-300 f/5.6L, 100 f/2.8 Macro

  2. #22

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    Quote Originally Posted by SilverPine View Post




    From above sample photo, I was not using flash shutter speed 1/250 second, it was from another photographer using flash and I think he was shooting horizontal. The ghosting of the photo was result from another photographer's flash, not from my camera.
    I assumed you shot this in portrait orientation and not cropped from landscape orientation. If so, I'm not surprised, but it doesn't answer the question pertaining to my image.
    hi

  3. #23

    Default Re: Ghosting of photos

    Quote Originally Posted by SilverPine View Post






    From above sample photo, I was not using flash shutter speed 1/250 second, it was from another photographer using flash and I think he was shooting horizontal. The ghosting of the photo was result from another photographer's flash, not from my camera.
    I'm not seeing ghosting in your sample. But I think you're referring to the darker band on the right relative to the bright left side.
    Again, without knowing what the other photographers were using, their stobes and what modifiers they were using, what the ambient light was (spot light on performer?) its hard to be certain exactly what's going on.
    But its likely explained by the first scenario in my reply to Silvermoon in post #19.
    The right side (darker part) was your ambient exposure (without flash). The left side was lit with another photographer's flash + ambient light.
    There's no reason to expect your shutter actuation to be in sync with another photographer's flash so part of the frame is block by your shutter during its opening/closing movement, similar to an out of sync flash exposure above max flash sync speeds, except there's ambient exposure present in your shot.

    This isn't an illustration of:
    Quote Originally Posted by SilverPine View Post
    It was more to do how the flash fire, light up the place starting from left and move toward the right...
    In other words, you hadn't captured light mid-way whilst it travelled across your frame. Just calculate the time it would take for light to travel the distance across the frame and the theoretical shutter speeds required to capture this and you'll see this is not even close to being possible with any current commercial camera equipment, if at all.

  4. #24

    Default Re: Ghosting of photos

    Hi silvermoon1407,
    if you're determined to get an explanation, I'd suggest asking this in the 'Photographic science and technology' forum in dpreview. There's quite a number of scientific minded posters there that I think can give you a definitive answer.

  5. #25

    Default Re: Ghosting of photos

    When I saw this, it reminded me of this thread. Perhaps it's a similar issue?

    http://petapixel.com/2014/12/22/niko...s-lens-flares/

  6. #26

    Default Re: Ghosting of photos

    Quote Originally Posted by kandinsky View Post
    When I saw this, it reminded me of this thread. Perhaps it's a similar issue?

    http://petapixel.com/2014/12/22/niko...s-lens-flares/
    Yeah when i saw the first photo posted by TS it immediately reminded me of the D750 flare issue. This issue apparently is not isolated to only D750.

    More here => http://www.imaging-resource.com/news...m-its-not-lens

  7. #27

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    Quote Originally Posted by kandinsky View Post
    When I saw this, it reminded me of this thread. Perhaps it's a similar issue?

    http://petapixel.com/2014/12/22/niko...s-lens-flares/
    Quote Originally Posted by ikilledversace View Post

    Yeah when i saw the first photo posted by TS it immediately reminded me of the D750 flare issue. This issue apparently is not isolated to only D750.

    More here => http://www.imaging-resource.com/news...m-its-not-lens
    Perhaps. But the d750 is due to internal reflection of the af sensor. But Sony mirrorless systems have no mirror or dedicated af sensors!
    hi

  8. #28
    Moderator daredevil123's Avatar
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    Default Re: Ghosting of photos

    Quote Originally Posted by kandinsky View Post
    When I saw this, it reminded me of this thread. Perhaps it's a similar issue?

    http://petapixel.com/2014/12/22/niko...s-lens-flares/
    My suspicion as well...

    Quote Originally Posted by ikilledversace View Post
    Yeah when i saw the first photo posted by TS it immediately reminded me of the D750 flare issue. This issue apparently is not isolated to only D750.

    More here => http://www.imaging-resource.com/news...m-its-not-lens
    It is already shown that this effect is evident in many cameras including D800, D3300... etc. and some Canon cameras too...

    Quote Originally Posted by silvermoon1407 View Post
    Perhaps. But the d750 is due to internal reflection of the af sensor. But Sony mirrorless systems have no mirror or dedicated af sensors!
    It can be from any thing, not just the af sensor... It so happens that the culprit in D750's case is the AF sensor...

  9. #29
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    Default Re: Ghosting of photos

    Hi it looks like shadow cast on the filter from the hood

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