Posts Tagged ‘laser’
Update: The video has been taken down by the uploader.
The harmful effects of concert lasers when exposed to your camera’s image sensor are well documented. In the past we’ve shared several videos (here and here) that showed three different Canon 5D Mark IIs rendered unusable after a concert laser passed over them for only a second.
And if it can happen to a 5D Mark II, you better believe it can happen to a sensor much more expensive than that. The video above shows what happens when a $20K RED EPIC’s image sensor goes head to head with a similar laser. Gear lovers might want to look away … Read more…
A team of researchers at Heriot-Watt University in Edinburgh have developed a new laser camera system that can take extremely precise 3D depth scan images from up to a kilometer away (0.62 miles). An impressive advancement in laser imaging, the camera uses a low power infrared laser beam to create 3D images precise to the millimeter. Read more…
Earlier this month, we featured an upcoming license plate frame that uses bright flashes of light to prevent traffic enforcement photographs. In the article, we mentioned that the concept could potentially be used by the rich and famous to avoid the constant gaze of paparazzi cameras. Turns out the rich and famous are already one step ahead of us.
Eclipse, the world’s largest private yacht owned by Russian billionaire Roman Abramovich, already features a high-tech anti-photography system that uses lasers to seek out and deny cameras.
The Nero Multi Trigger is a nifty camera triggering device that can make your DSLR and external flash unit respond automatically to sight, sound, and motion. It has built in optical, audio, and laser sensors, allowing you to shoot everything from lightning flashes to balloon pops. There’s also an intervalometer for time-lapse photography. The device mounts to your DSLR’s hotshoe and is powered by a pair of AAA batteries. They cost $200 each and are available for both Nikon and Canon DSLRs from the NERO website.
German scientists have been awarded a Guinness World Record for “fastest movie” after successfully capturing two images of an X-ray laser beam 50 femtoseconds apart. One femtosecond is equal to one quadrillionth (or one millionth of one billionth) of a second. Here’s some science talk explaining it:
[...] the scientists split the X-ray laser beam into two flashes and sent one of them via a detour of only 0.015 millimetres, making it arrive 50 femtoseconds later than the first one. Since no detector can be read out so fast, the scientists stored both images as superimposed holograms, allowing the subsequent reconstruction of the single images.
With these experiments, the scientists showed that this record slow motion is achievable. However, they did not only take the world’s fastest but probably also the shortest film – with just two images. Thus, additional development work is necessary for the use of this method in practice. [#]
And we thought one trillion frames per second was impressive…
Image credit: Photograph by Stefan Eisebitt/HZB
European Southern Observatory photo ambassador Yuri Beletsky shot a series of epic photos showing astronomers shooting powerful laser beams into the night sky. The photo above showing a laser beam pointed at the center of our galaxy was voted as last year’s Picture of the Year over at Wikipedia.
On a rainy day recently, light painting photographer Jeremy Jackson was playing around with a green laser pointer when he discovered something interesting: all the out of focus raindrops in the photograph had a lined pattern in them — and each one was unique! These “water drop snowflakes” were found in all of the photos he took that day.
Anyone know what causes this phenomenon?
Image credit: Photograph by Jeremy Jackson and used with permission
We have a bit of a scoop for you today: there’s going to be a new Kickstarter-funded gadget announced on Thursday called the Triggertrap. It’s a pretty nifty universal camera trigger that can trigger your camera’s shutter with anything you can think of using a built-in intervalometer, a laser trigger, a sound sensor, and an Aux input that you can connect custom triggers to:
Think about it: You press your car horn, it takes a photo. Your phone rings, it takes a photo. The sun rises, it takes a photo. Anything is possible – and that’s why this camera trigger is so eminently hackable and exciting to experimental photographers all over the world!
Photographer Adrian Onsen wanted to use the AI Servo autofocus mode on his Canon 40D in low-light situations, but found that the AF assist beam is only emitted once until focus is achieved rather than every time the camera needs to refocus. He then purchased a laser pointer from a dollar store, disassembled it to obtain a defocused beam of light, and attached it to the top of his camera. The hacked-together AF assist tool ended up working pretty well — Onsen was able to shoot sharper photos at a dance club without anyone noticing the extra light. To learn more check out his in-depth writeup here.