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Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves?

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On 12/15/2017 1:23 AM, Arthur Wood wrote:
> Eric Stevens wrote:
> 
>> I think you mean cams rather than valves.
>>
>> It looks to me as though the highlighted parts give rise to a strak of
>> light at an angle to the frame of the image. In some of the shots
>> (e.g. bay 10) streaks can be seen emenating from highlights other than
>> the cams. I suspect the problem may be due to a smear on the camera
>> lens. I suggest you try it with another camera.
> 
> You are correct in noticing that all the streaks of light are at the same
> 45 degree angle no matter how the camera is held.
> 
> That's why I think it may be some "physics" principle involved.
> 


Yep. See my answer above, and the formula at
<https://en.wikipedia.org/wiki/Point_source>.






> There are many other photos taken with the same camera but under daylight
> lighting where these streaks do not happen so it's not the camera.
> 
> Some of those photos are here.
> http://www.bimmerfest.com/forums/showthread.php?t=1181089
> 
> And here:
> http://www.bimmerfest.com/forums/showthread.php?t=1181289
> 
> So it's not the camera or the lens except under those lighting conditions.
> 
> I was assuming there is something weird in the physics of the lighting that
> causes those sleet like streaks always at 45 degree angles and far from
> being a mere reflection.
> 


-- 
PeterN

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Thread

Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Arthur Wood <arthurwood@bimmerfest.com> - 2017-12-14 16:48 +0000
  Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Paul <nospam@needed.invalid> - 2017-12-14 11:54 -0500
    Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Savageduck <savageduck1@{REMOVESPAM}me.com> - 2017-12-14 09:13 -0800
  Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Savageduck <savageduck1@{REMOVESPAM}me.com> - 2017-12-14 09:08 -0800
    Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? nospam <nospam@nospam.invalid> - 2017-12-14 12:26 -0500
      Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Savageduck <savageduck1@{REMOVESPAM}me.com> - 2017-12-14 09:49 -0800
        Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? nospam <nospam@nospam.invalid> - 2017-12-14 12:59 -0500
        Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? PeterN <"peter,newdelete"@deleteverizon.net> - 2017-12-14 22:49 -0500
          Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Arthur Wood <arthurwood@bimmerfest.com> - 2017-12-15 06:18 +0000
            Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Ken Hart <kwhart1@frontier.com> - 2017-12-15 14:25 -0500
            Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? PeterN <"peter,newdelete"@deleteverizon.net> - 2017-12-15 23:14 -0500
  Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Eric Stevens <eric.stevens@sum.co.nz> - 2017-12-15 11:24 +1300
    Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Arthur Wood <arthurwood@bimmerfest.com> - 2017-12-15 06:23 +0000
      Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Eric Stevens <eric.stevens@sum.co.nz> - 2017-12-15 21:56 +1300
        Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Arthur Wood <arthurwood@bimmerfest.com> - 2017-12-15 14:49 +0000
          Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? nospam <nospam@nospam.invalid> - 2017-12-15 10:39 -0500
            Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Arthur Wood <arthurwood@bimmerfest.com> - 2017-12-15 18:33 +0000
        Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? PeterN <"peter,newdelete"@deleteverizon.net> - 2017-12-15 23:23 -0500
      Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Jeff <j@donotspam.me> - 2017-12-15 17:24 +0000
        Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Arthur Wood <arthurwood@bimmerfest.com> - 2017-12-15 18:32 +0000
          Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? "Carlos E.R." <robin_listas@es.invalid> - 2017-12-15 19:51 +0100
          Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Eric Stevens <eric.stevens@sum.co.nz> - 2017-12-16 18:44 +1300
            Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? "Carlos E.R." <robin_listas@es.invalid> - 2017-12-16 14:17 +0100
              Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? nospam <nospam@nospam.invalid> - 2017-12-16 09:50 -0500
      Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? PeterN <"peter,newdelete"@deleteverizon.net> - 2017-12-15 23:20 -0500
  Re: Is there an easy way to stop this light scatter ghosting in all my photos & videos of engine valves? Alan Browne <bitbucket@blackhole.com> - 2017-12-16 18:21 -0500

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