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Smartphone Camera Apertures

 

Gizmag looks at smartphone lens aperture, and why it's important

Gizmag looks at smartphone lens aperture, and why it’s important (Credit: Simon Crisp/Gizmag).

Lens aperture is increasingly up there with megapixels when it comes to the camera specifications that smartphone makers like to boast about, but what exactly do those numbers mean? Here we look at what aperture is, how it works, and what it means to your smartphone photography.

Aperture is essentially an opening of a lens’s diaphragm through which light passes. It works much like the iris and pupil of an eye, by controlling the amount of light which reaches the retina. A bigger aperture hole lets your smartphone camera sensor gather more light, which it needs to produce quality images.

The size of a lens aperture is described by its F-number, which is calculated using the lens focal length to the diameter aperture. As such, a larger F-number refers to a smaller hole, and therefore less light getting through. This is why smartphone camera manufacturers brag about larger apertures, with smaller F-numbers. read more

Lasers Hide the Earth

A 22 W laser used for adaptive optics on the Very Large Telescope in Chile

A 22 W laser used for adaptive optics on the Very Large Telescope in Chile (Credit: RAS/ESO/G. Hüdepoh).

In recent years, mankind has become very good at finding other planets. Using instruments like the Kepler Space Telescope, scientists have, to date, discovered over 2,000 planets outside our Solar System, but what if some of those planets are inhabited by beings we’d rather not talk to, much less have drop in? Just in case any potential visitors are less ET and more Aliens, a pair of Columbia University scientists have figured out how to use lasers to hide the Earth from prying eyes by camouflaging its light signature. read more

The Joint Light Tactical Vehicle (JLTV)

The U.S. Army’ $30 billion replacement for its Humvee fleet is getting back on track after a federal court tossed out a request to stop work on the effort until a lawsuit over the program is resolved.

Wisconsin-based Oshkosh Defense can start working on the production of the Joint Light Tactical Vehicle (JLTV) after the U.S. Court of Federal Claims denied a request by Lockheed Martin, which lost out on the massive contract last year, to halt the effort. read more

British Side-Loading Cannon

The new 40 mm Cased Telescoped Cannon System will be installed on British Army Ajax and ...

The new 40 mm Cased Telescoped Cannon System will be installed on British Army Ajax and Warrior (seen here) armored vehicles. View gallery (2 images)

The British Army has taken delivery of its first completely new cannon system in 50 years – and it loads sideways. This loading system on the new 40mm Cased Telescoped Cannon System, which was handed over to the British Ministry of Defence (MoD) in Bourges, France by CTA International (CTAI), is claimed to provide more firepower while saving space. read more

Nikon’s 360 Action Cam

What's interesting about the KeyMission 360 is that Nikon is seemingly able to achieve 360-degree video ...

What’s interesting about the KeyMission 360 is that Nikon is seemingly able to achieve 360-degree video with only two lenses.

Nikon has just made its debut in the action cam arena, revealing what it says is the first in a family of durable, compact devices for harsh shooting conditions. The rugged KeyMission 360 is claimed to capture all manner of outdoor activities, and in ultra-sharp, 360-degree video no less. read more

Foldable Helmet

A variation of the Alpha Helmet with a chinstrap fully engaged on the right

A variation of the Alpha Helmet with a chinstrap fully engaged on the right.

Scientists and inventors have been taking their cues from nature for centuries, but who would have thought the somewhat exotic pangolin (aka scaly anteater) and honeybees would influence a bicycle helmet design? That unlikely pairing is what inspired Golem Innovation to create the Alpha helmet, a folding noggin protector that retracts around your neck when not in use. read more

Hey McFly – Your Self-Lacing Shoes Are Here

Back to the Future II was close to hitting the mark when it predicted 2015 would bring hoverboards, self-tying shoes, and wearable devices.

While the most common hoverboards on the market don’t actually hover, Nike’s latest reveal just a few months into 2016 finally brings Marty McFly’s iconic sneakers to life.

The company has unveiled the Nike HyperAdapt 1.0, which automatically tighten when the wearer’s heel hits a sensor.

And, they will be available to Nike+ members later this year.

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Nike¿s latest reveal just a few months into 2016 finally brings Marty McFly¿s iconic sneakers to life. The company has unveiled the Nike HyperAdapt 1.0, which automatically tighten when the wearer¿s heel hits a sensor. And, they will be available to Nike+ members later this year

read more

New iPhone 7 Leaked

Apple’s iPhone 7, expected to be revealed in September, will not have a headphone socket, a new leaked case design has shown.

The move has been rumored for several months, with Apple believed to be preparing a range of wireless headphones to launch with it.

The latest leak from nowhereelse.fr comes, the site claims, from a reliable case manufacturer.

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The latest leak from nowhereelse.fr shows a case with no headphone socket, but in their place holes believed to be for stereo speakers.

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Edit Videos on Your TV

The Sugarlock action cam dock lets you edit video footage on a TV
The Sugarlock action cam dock lets you edit video footage on a TV (Credit: Sugarlock).

Would you be more likely to edit all of that action camera and drone footage you’ve got sitting on memory cards if you could do it on your TV rather than a computer? That’s the logic behind Sugarlock, a video editing box which plugs into your TV and lets you edit and share footage using a smartphone as a remote. read more

Shape-Shifting BMW Concept

The BMW Vision Next 100 concept looks forward to the features of tomorrow's autonomous car
The BMW Vision Next 100 concept looks forward to the features of tomorrow’s autonomous car (Credit: BMW Group).

BMW’s Vision Next 100 concept car might look like someone came to the tires and got a bit confused, but there is definite method to what seems like automotive madness. Developed as a celebration of the BMW Group’s centenary, the Vision Next 100 is the company’s attempt to take a long-term look at what the car of tomorrow might look like after autonomous drive technology has fundamentally changed automotive design. read more