interesting video, but many of his same examples were in this 2012 NASA video: https://youtu.be/Q3YYwIsMHzw

Also, not to detract it's usefulness (and cool factor), but many people seeing this photo think that's how the Earth actually looks at night - it isn't. That composite uses satellite data from Suomi NPP's VIIRS sensor, which can detect much dimmer light than the human eye, and part of the compositing process was to normalize brightness of individual pixels (so dim lights get brighter, and bright lights don't washout adjacent pixels). More details here:
https://www.nasa.gov/mission_pages/NPP/news/earth-at-night.html

Even some cool night-time videos from ISS (example: https://youtu.be/FG0fTKAqZ5g ) are made using still photos with long exposure time (1+ seconds) See FAQ.

This did lead me to a live webcam from ISS that I didn't know existed: https://eol.jsc.nasa.gov/ESRS/HDEV/

They stay that way in all proceeding pictures? Or just the long exposure ones?

I would assume the latter, cosmic rays slow down and lose quite a bit of their energy by the time they hit us down here on the ground....exposure to one in space though will certainly kill a pixel for good.

Saturation of light sensitive photodiodes (ill call them PD's henceforth) (essentially what the CCD is PACKED with) causes damage over time. You can just over-saturate the PD, to the point of damage (usually around 3dBm above its rated saturation point), and it will bounce back ok. The sensitivity of the pixel will be harmed dependant on the time and the level above saturation it was exposed at.

You can see a similar phenomenon in video footage of nuclear reactor survey footage from drones, or....stupid people that are way too close....where the reactors have a nasty event.

^vote for long exposure, my favorite style of photography.

i want to take long exposures of her.

i want to take long exposures of her. what are her digits?

There's plenty of intentionally blurred faces in the ones I've taken part in (elementary and middle school)-Once kids figured out that when they shook their heads back and forth rapidly that they would look like paranormal ghouls everyone was twitching and wiggling the next year!

There used to be good money in these student body long-exposure pans. Analog kicks ASS!

you can have a lot of fun with long exposures. here is a 15 second exposure where i am in 2 different locations. http://flic.kr/p/74BNEM

Hi Osama, i believe those photos were longer exposures, hence the lighting of the clouds and mountains by small amounts of light from either the near-by city or possibly the moon behind the camera. I think many of those shots are possible and only possible with constant long exposure shots put together into a sequence clip. With a good enough camera and lens, these shots can be achieved with 1+ sec exposure time, although with so much detail, I would expect longer exposures whilst the diaphragm can be less open so as to avoid overexposure.

On another note, doesn't the sequence of scenes seem like a modern version of the qatsi series?


>> ^osama1234:

I do like this video, but could someone with photography knowledge explain/verify to me that the kind of timelapse he's done is in many scenes impossible to see with the naked eye, or even a time-lapse consisting of (not two images meshed together) long exposure photos, without mixing together multiple pictures, and possibly pictures from different times (day vs night). (I find it impossible to imagine how he shot stars in daytime in between clouds (1:50), or the scene where the stars are visible in broad daylight while the mountain is also visible in daylight).

I do like this video, but could someone with photography knowledge explain/verify to me that the kind of timelapse he's done is in many scenes impossible to see with the naked eye, or even a time-lapse consisting of (not two images meshed together) long exposure photos, without mixing together multiple pictures, and possibly pictures from different times (day vs night). (I find it impossible to imagine how he shot stars in daytime in between clouds (1:50), or the scene where the stars are visible in broad daylight while the mountain is also visible in daylight).

A crappy camera taking video at night with a closed 6-blade aperture (as evidenced by the starshaped lights)? Real my ass. Consumer cameras rarely even have apertures, and keeping it closed in the dark is only something you do for long exposures (several seconds) to create that star effect, necessitating a tripod. In addition you can see the interference patterns when they zoom in, indicating that they were filming a computer screen or projected image (my guess is the former). Absolutely no other movement in the image aside from the white blob and the camera shake. And did I hear someone speak Mandarin Chinese in the background? Is that common in Jerusalem? American and Chinese tourists hanging out at the same spot?

Not a very well done hoax. It doesn't take much to fake a couple of camera shots like that. And I'd definitely say * lies.

I'm guessing that he isn't using daylight but rather either moonlight(when available) or another very low power light source. The long exposure times for the star trails mean that foreground objects can appear very bright. Sort of the opposite of why stars are absent in photos from the moon. The moon is so bright that the exposure times are too short to capture enough starlight.

>> ^Kalle:

So how does he get the stars to light up in bright daylight??
Or is this some sort of rotoscoping thingy???

>> ^HaricotVert:
Attach an LED to the end, turn off the lights, and then take a long exposure picture until the motion gets boring.
Do this as many times as you want with different colored LEDs. Post all results onto DeviantArt. Profit.


http://en.wikipedia.org/wiki/File:DPLE.jpg

Attach an LED to the end, turn off the lights, and then take a long exposure picture until the motion gets boring.

Do this as many times as you want with different colored LEDs. Post all results onto DeviantArt. Profit.

As HollywoodBob said, they are washed away from streets or coastal areas. also a lot of is from the ships that traverse the Pacific ocean. Over the short 40-50 years of plastic history, all those ships that went around the Pacific ocean pretty much just dumped all the garbage they produced while traveling into the ocean, since it is a "vast" place. What people over that period failed to realize till recent;y is that the "North Pacific Subtropical Gyre" formed by all the currents around Pacific ocean have pushed all the trash into one location forming the "great garbage patch". Since the only way for these man made polymers to degrade is UV ray from the sun over a long long exposure.(No microbes can break down plastic yet) being in the water shielded most of it from UV ray making it takes even longer to photodegrade.


>> ^ravioli:
To me it's not clear how this garbage actually leaves the dumps and ends in the ocean. It's not just stuff left on the beach that's pulled by the waves. It's not just stuff thrown overboard by seamen. It must be transported and conveniently dumped in the ocean while no one is looking. Probably the cheapest way to get rid of garbage, and it's been going on a large scale for decades. Ships travel between Asia and America with marchandise on one way, and have to be filled with something on their return. I wonder if half of all the plastic bottles sent to China for recycling ever get there.
Please AQUAMAN!! We need you!!

FYI.. buildings that have been taken down by controlled demolition, don't leave molten steel

You might wanna read that section again.

"Any molten steel in the wreckage was more likely due to the high temperature resulting from long exposure to combustion within the pile than to short exposure to fires or explosions while the buildings were standing."

You seem to be of the mindset, that the fire was immediately hot enough to melt the steel(which obviously it wasn't), yet it actually took quite a long period of time for the steel to become molten.

It's entirely feasable, unlike, say... the idea that a whole load of CD guys can rig three whole buildings with explosives, without a single person noticing.