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  • ~Alan~
    Rank 5 Registered User
    • Mar 2010
    • 5022

    Spots on image

    A few weeks ago when the BBMF were based at Southend for the Clacton airshow, I took a lot of pictures
    of them taking off on the Friday. When I was processing them in Lightroom I noticed an abnormal amount
    of spots which I had to get rid of (it was a clear sky) I also do a lot of wildlife photography, and haven't
    noticed the same thing there. It may have been large insects, but I wonder, could it be oil being chucked
    out of the engines ? Unlikely I know, but what else could have been causing it ? Anyone else had the
    same thing happen ? ..............There was nothing on the sensor.
    Engine Failure:.... A condition which occurs when all fuel tanks mysteriously become filled with air.
  • Scouse
    Rank 5 Registered User
    • Mar 2006
    • 858

    #2
    Have you got an example you could post? Also what camera were you using?

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    • ~Alan~
      Rank 5 Registered User
      • Mar 2010
      • 5022

      #3
      Originally posted by Scouse View Post
      Have you got an example you could post? Also what camera were you using?
      This is a cropped image showing what looks like a dust spot. I use a D500
      Each photo I took had about a dozen such spots on them. Unfortunately I don't keep my RAW images,
      and the photos I keep have been cleaned up. It's not something I have previously had a problem with.

      [/url][url=https://postimages.org/]image url
      Engine Failure:.... A condition which occurs when all fuel tanks mysteriously become filled with air.

      Comment

      • Scouse
        Rank 5 Registered User
        • Mar 2006
        • 858

        #4
        Even though you say there was nothing on the sensor, it looks like a dust spot to me. There's any number of helpful web pages out there telling you exactly what to look for, and decent camera dealers will often have a while-you-wait sensor cleaning service.

        Comment

        • ~Alan~
          Rank 5 Registered User
          • Mar 2010
          • 5022

          #5
          Originally posted by Scouse View Post
          Even though you say there was nothing on the sensor, it looks like a dust spot to me. There's any number of helpful web pages out there telling you exactly what to look for, and decent camera dealers will often have a while-you-wait sensor cleaning service.
          Thanks for the advice, but if it were dust on the sensor it would still be there, as I haven't done anything with it. While I was going around
          Rainham Marshes nature reserve yesterday, I took some photos of aircraft going into City Airport. They were perfectly clean.

          Further investigation is needed methinks..... Thanks anyway

          Engine Failure:.... A condition which occurs when all fuel tanks mysteriously become filled with air.

          Comment

          • ~Alan~
            Rank 5 Registered User
            • Mar 2010
            • 5022

            #6
            You were of course correct about having dust on the sensor. The reason it wasn't showing on the lens I use for shooting wildlife
            is because that is a fixed f5 aperture and I use manual mode.
            When photographing prop aircraft, as I was yesterday at Duxford, I tend to use shutter priority at a slow speed, which on a bright
            sky can close the aperture right down, hence showing up the dust spots. Some from yesterday looked as if they'd had a severe
            case of measles.
            I have ordered a sensor cleaning kit.
            Engine Failure:.... A condition which occurs when all fuel tanks mysteriously become filled with air.

            Comment

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