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Originally posted by skywatch
whats the round green sphere....
quite an irregular lensflare...
sorry to say it was several football fields.. i correct myself after reading the chinesse tranlation.. "only" half a field
whats the green ball doing there?
Originally posted by C.H.U.D.
More examples of "ghosts":
Sorry but no, thats Lens Flare
IP
Originally posted by InfoProvider
Sorry but no, thats Lens Flare
Veiling glare is stray light in lenses and optical systems caused by reflections between surfaces of lens elements and the inside barrel of the lens. It is a strong predictor of lens flare— image fogging (loss of shadow detail and color) as well as "ghost" images— that can degrade image quality in the presence of bright light sources in or near the field of view. It occurs in every optical system, including the human eye.
Flare occurs due to light bouncing off the glass surfaces of a lens (i.e., internal reflection) rather than transmitting through. Because of this internal reflection, image contrast and tonality are reduced. When you point the lens close to the sun or a very strong light source, lens flare and/or ghost may occur in your image. In the left [top] image below, the sun is near the upper-right corner, and the upper right portion of the image is somewhat washed out. The middle image below even include the sun in the image. The area near the bright spot (i.e., the sun) is washed out completely.
The right [last] image above illustrates another effect, ghost, a string of color dots appearing in the image. The washed-out effect (i.e., flare) is still there near the upper-left corner, but is not as strong as in the middle one. However, there is a string of dots, usually in green, purple or violet, appears in the image. These dots have the shape of the aperture of the lens and are not part of the actual scene. Therefore, they are called ghosts! Most low cost zoom and wide angle lenses suffer this problem. The image below shows flare, ghost and severe washed-out. Sun light comes in from the upper-left corner, and, as a result, you can see the shape of the aperture there. The washed-out bottom portion is caused by water reflection. With a better lens, surfaces of glasses are multicoated with special anti-reflection chemicals to prevent flare and ghost. However, even though with a multicoated lens like the on-camera one, flare and ghost cannot be eliminated completely. See Coated or Non-Coated for more details about lens coating.
Originally posted by Nola213
Now If I saw this, I would definitely need to change my shorts. Good grief, that is nuts!
Originally posted by Bspiracy
The "centering" of the flare and secondary lights doesn't jive either in the pictures trying to demonstrate the center point.. If you turn the camera left or right, the axis should still stay aligned throughout each image. instead you have to change the axis..
Originally posted by nablator
It happens every time you take a picture of a very| bright light at night.
Originally posted by nablator
Originally posted by Nola213
Now If I saw this, I would definitely need to change my shorts. Good grief, that is nuts!
It happens every time you take a picture of a very| bright light at night. Try it yourself. And call it whatever you like ghost/flare/thingumabob. It is symmetric to the bright light relative to the center of the picture. Its shape is the same as the overexposed bright light, but inverted. Many examples have already been posted in this thread. Its color is greenish with a yellow light because of the anti-reflection layer on the lens. I don't need to post my own photographic experiments, it's very easy to duplicate.