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Halo around the plane

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  • Halo around the plane


    Hello everyone, kindly,
    with reference to the attached photo, it is the first time that I happen to see a halo like this around the plane in the equalization.
    I have always used a Canon EOS2000D with a Canon 70-300 IS USM and there never was, now I bought a Canon EOS90D paired with the same lens and I have photos with this halo.
    I usually photograph at F8 and partial metering mode.
    The camera was purchased new, unused. This halo appears only in (all) photos of airplanes in flight, not in those on the ground.
    This is not a vignette because it does not impact the edges of the photo, but I would like to know if a photo like this is acceptable or if it is discarded: it would be a big problem, new camera and all discarded photos.
    Could it be some kind of polarization phenomenon?
    Thank you very much in advance
    Carlo

    Click image for larger version  Name:	Halo.jpg Views:	0 Size:	566.5 KB ID:	1138796

  • #2
    From my experience, this is always an editing issue, not camera related. It happens when you edit the picture and adjust highlights and / or dark tones too much.

    Try to equalize an unedited image and see if the results are the same.
    Oliver Richter

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    • #3

      hello KampfHase, thank you for your reply, very kind.
      Below I attach the original and unedited photo, only cropped and equalized: there is some difference but the halo is practically identical.
      Virtually all photos taken of aircraft in flight have this halo.
      Thank you very much
      Carlo

      Click image for larger version

Name:	unedited.jpg
Views:	527
Size:	527.8 KB
ID:	1138804

      Comment


      • #4
        Maybe I was able to understand the reason for the halo and it lies in the exposure mode. I found some photos from a few months ago, taken in the same place as the others, but which do not have the halo: in these photos nothing changes except the exposure mode which is evaluative and not partial. I attach below an example. Now I just have to figure out if I have to throw away all the photos because of the halo. I ask the screeners for an opinion. Thank you!

        Click image for larger version

Name:	no halo.jpg
Views:	517
Size:	551.3 KB
ID:	1138807

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        • #5
          highlights and shadow may cause this kind of issues.
          Kind regards from Sydney
          Charlie Chang

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          • #6
            Originally posted by Carloluigi View Post
            Maybe I was able to understand the reason for the halo and it lies in the exposure mode. I found some photos from a few months ago, taken in the same place as the others, but which do not have the halo: in these photos nothing changes except the exposure mode which is evaluative and not partial. I attach below an example. Now I just have to figure out if I have to throw away all the photos because of the halo. I ask the screeners for an opinion. Thank you!

            Click image for larger version

Name:	no halo.jpg
Views:	517
Size:	551.3 KB
ID:	1138807
            That won't do it. That just defines what the camera uses as reference for calculating shutter speed.

            Are you shooting in P/Av/Tv mode, or using one of the scene modes (that has a mountain, flower, guy running, A+ with a square, etc)
            [SIGNATURE GOES HERE]

            Felipe Garcia

            Comment


            • #7

              Hi Felipe, thanks for your reply.
              I shoot in Av mode, aperture 8 (sometimes 7.1).

              On Saturday I will go to the airport near my house and do more tests, I want to understand this phenomenon.

              Thanks
              Bye
              Carlo

              Comment


              • #8
                Probably you have to disable Auto Lighting Optimizer in your camera settings. Halos will disappear. Try it

                Comment


                • #9
                  Originally posted by jimmyjoint View Post
                  Probably you have to disable Auto Lighting Optimizer in your camera settings. Halos will disappear. Try it
                  I didn't know Canon had this function, but from what I see in this article, that might be the cause. Nikon's version causes halos like that.
                  Camera sensors can only capture so much light. When the camera's dynamic range fails, software can offer a boost. Canon's Auto Lighting Optimizer (ALO) does just that.
                  [SIGNATURE GOES HERE]

                  Felipe Garcia

                  Comment


                  • #10

                    Thank you Felipe and thank you jimmyjoint, you have been very kind with your answers.
                    Saturday I will let you know the results of the tests I will do.
                    Thank you
                    Carlo

                    Comment


                    • #11
                      Good day, in my experience halos appear for editing, for example in Lightroom, using the highlights/shadows/blacks, etc. sliders, or using the Auto function. For sky shots use the curves tool and you should be ok given that you are shooting in RAW.

                      Best regards,

                      cq

                      Comment


                      • #12
                        Hi Felipe, hi jimmyjoint and crisquijano, thanks for teaching me something new.
                        Today I went for some tests disabling the Auto Lighting Optimizer and shooting in partial mode (the mode in which I had encountered the halo).
                        Below I am attaching a photo, there is no halo.
                        Thanks so much again.
                        Best regards from Italy
                        Carlo

                        Click image for larger version

Name:	IMG_2341 No Halo.jpg
Views:	399
Size:	1.48 MB
ID:	1138936

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