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11/15/2005 05:54:15 AM · #1 |
 2.5 sec@f5, ISO 200
 1sec@f5, ISO200
Both shot with my 100mm Canon in Seoul, South Korea on 11/14.
I only noticed these strange green 'lights' when I opened the RAW files. There was nothing in the sky that I could see and the subsequent pics taken did not show any green lights?
Can one of the smart people tell me what it is/what caused this please. I would like to blame Bush and the UFO's that we all know they are hiding in sector 51... but maybe he is innocent this time;-)
Message edited by author 2005-11-15 06:08:12. |
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11/15/2005 06:14:12 AM · #2 |
| i experienced the same anomoly when my 300D was dying. it's almost like a double exposure, how some lights are hitting the sensor in two different places. i only noticed it on shots that had bright points of light. hope there's a better explanation out there from someone else... |
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11/15/2005 06:14:53 AM · #3 |
If you look at the second image and play around with contrast you can see a line of hills behind the city. The hills look as though they have buildings and therefore lights on them.
Also - did you take these through a window which may be reflecting something behind you?
Message edited by author 2005-11-15 06:16:03.
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11/15/2005 06:36:55 AM · #4 |
| I have got something similar when shooting through a hotel window. I discovered it was the alarm clock and the standby light on the TV. I think Falc may be right about it being a reflection. |
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11/15/2005 06:40:53 AM · #5 |
It's lens flare....
Rotate the 'green lights' in the top right of the image around the center of the picture and you'll find they line up pretty well with the hot spots of the traffic at the bottom left.
I've got a really good example of this on my site here
(Sorry bout the crappy small image, too lazy at 0:40 to upload a 640px version..)
You can see the green lights mirrored around the center point in that image a well...
edit: This might also be 'filter flare' if you've got a cheap filter on front... Also this is sometimes called 'ghosting'..
Cheers, Me.
Message edited by author 2005-11-15 06:42:58.
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11/15/2005 06:41:32 AM · #6 |
not through a window and definately not reflections, I even close the eyepiece as I shoot with a timer and tripod. Also, there are no buildings in the second pic behind those peaks.
really hope this old lady is not dying on me, but look at my spider pics.. no problem, the othe night pics, no problem.. Thanks for your replies;-) |
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11/15/2005 06:49:02 AM · #7 |
Maybe you were wrong! It IS Bush and the UFO's!! :p
Wierd! I have no explanation! |
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11/15/2005 07:02:02 AM · #8 |
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11/15/2005 07:05:44 AM · #9 |
as Chris said it is lens flare
I took you photo and added a new layer then drew over the lights on that layer
then I rotated the layer 180deg and they lined up with the lights at the bottom
I also adjusted the brightness of the base layer so my lines would show better
hope this helps... your camera is not dieing (no 20D yet)
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11/15/2005 07:17:53 AM · #10 |
Chris must be right, thanks for all the trouble! If only it was a UFO, WOW! How much money could we have made for those pics.. alas, Chris you are tooooooo smart.;-)
Thanks to all, kind and great people of this family. |
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11/15/2005 07:46:02 AM · #11 |
Originally posted by Firsty:
as Chris said it is lens flare
I took you photo and added a new layer then drew over the lights on that layer
then I rotated the layer 180deg and they lined up with the lights at the bottom
I also adjusted the brightness of the base layer so my lines would show better
hope this helps... your camera is not dieing (no 20D yet)
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Very nicely illustrated, Firsty.
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11/15/2005 07:53:01 AM · #12 |
I've had a similar problem when shooting at night with a filter in front of the lens. Look how some lights on the vehicles are reproduced and displaced. The colours are off too.
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11/15/2005 07:59:01 AM · #13 |
I would blame that nutty leader with the screwy hairdoo up north...Kim Jong-il (sp?)
Are you absolutely sure those aren't plane or helicopter lights? |
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11/15/2005 08:31:44 AM · #14 |
the lights in the top one look like an airplane going by, how the lights blink every once in awhile. Nice images though. I just shot a skyline of Chicago last night and as soon as my camera defrost I'll have to see if I have anything like this too.
Message edited by author 2005-11-15 09:37:07.
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11/15/2005 09:07:54 AM · #15 |
| I had the EXACT same thing on some night shots of NYC from across the river in NJ earlier this year. I was wondering the same thing. |
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11/15/2005 09:12:36 AM · #16 |
| Could it be internal reflections inside the camera? |
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11/15/2005 09:24:34 AM · #17 |
Originally posted by Telehubbie:
Could it be internal reflections inside the camera? |
Yep. Sometimes you get a reflection off the sensor, that is re-reflected off the rear element, back to the sensor. There are other possible reflection paths, but I think that's the most common one. When one sees severe ghosting, it's quite often attributable to a filter, though.
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11/15/2005 07:43:51 PM · #18 |
Originally posted by kirbic:
Originally posted by Telehubbie:
Could it be internal reflections inside the camera? |
Yep. Sometimes you get a reflection off the sensor, that is re-reflected off the rear element, back to the sensor. There are other possible reflection paths, but I think that's the most common one. When one sees severe ghosting, it's quite often attributable to a filter, though. |
this is so wild, but i just happened to be reading through the may05 issue of outdoor photographer...
Originally posted by George D. Lepp/Outdoor Photographer:
One problem has been ghosting. The extra glass that sits on top of the sensor to protect it can reflect the image back toward the rear element of the lens, which then bounces it back toward the snesor. This ghosting has been minimized in the newer lens designs. |
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11/15/2005 07:47:02 PM · #19 |
I think they me be tiny UFO's.
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