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Its much better than hearing it came from a 3d website somewhere.
Originally posted by Unity_99
reply to post by zaiger
...OP: its rather interesting affect. I don't believe half the things they say are lense flares or compression artifacts are, but in this case, what is it? Thanks for posting this photo for discussion.
That when he used a certain program to remove noise, a demo I believe, the stars popped out.
ISO noise is a factor of the sensitivity of CMOS to light. As the ISO number gets higher, the sensitivity increases but so does the possibility of noise. The result is that you can shoot at faster shutter speeds and higher apertures to obtain greater DOF but, as with most other things in photography, there is a cost or a trade off. As ISO increases the amount of noise generated in the image also increases. Noise can be seen as random colour flecks that are not really in the scene that is being photographed but are placed in the image by the CMOS...
...when one is photographing the stars, doing an extreme close ups, or using the Hubble, you need to know that noise is not creating something in the image that is not really there.
Close encounters of a Norfolk kind: Glowing green UFO spotted hovering over windmill
By Daily Mail Reporter
Last updated at 3:06 PM on 10th March 2010
While he was there he didn't hear or see anything unusual and it is only when he got home to King's Lynn that he realised there was something odd about the images he'd taken.
The green light was on some images but not others indicating it was not a smudge on his lens and it appeared to have moved from right to left.
Plane? Helicopter? Gyrocopter? The theories abound in and around the villages close to the windmill, which is 30 miles from an RAF base, about what went on that February night.
Lindsay Abel, manager of the windmill, told Mail Online: 'It is very strange it has to be said.'
She said the building was an aerial landmark for pilots and had even been used as a navigational tool during World War II.
'The Germans used it in the war when they headed up to the Midlands to bomb,' she said.
'Maybe the UFO looking down saw these strange sails and wondered what the hell it was!'
Malcolm Robinson, founder of Strange Phenomena Investigations, said he thought the photograph showed a Chinese lantern.
He said: '[Chinese lanterns] can be from 2 to 6 feet across and a candle can be lit inside them whereupon the individual then releases them into the sky.
'Chinese lanterns have given rise to many a false UFO report here in the UK.
'What I think has happened here is that the paper which makes up the Chinese Lantern could have been made of green paper and the candle would shine through the green paper turning the image/light to green.
'When photographed, the cold night air would intensify around the light making it blur for the camera.'
The 19th century windmill stopped working in 1941 when its sails were struck by lightning but has since been restored and is the last working windmill in Norfolk.
I have done amateur astrophotography for 20 years, and unless you had the camera on a tripod with an autotracker, and a shutter speed of at least 1 minute, you would never get an image like that, since the primary is simply too small to gather that much light.