Samsung Galaxy S9

Teardown video shows how the Galaxy S9 variable aperture works

The YouTube channel JerryRigEverything recently tore down (or rather tore apart…) the new Samsung Galaxy S9, giving us the closest look at yet at the new smartphone’s camera hardware. So if the still images in the iFixit teardown weren’t quite interesting enough for you, this might just do the trick.

The camera teardown is about one minute and a half long, running from the 3:30 mark until about 5:00. In that time, we get to see the Optical Image Stabilization system demoed and torn open to reveal the magnets inside:

Then, we get really close look at one of the phone’s most intriguing features: the variable aperture. It turns out the system works using a little lever on the side of the housing. So when the phone senses that there is enough light to justify it, it’ll flip this switch electronically and switch from it’s world’s-brightest F1.5 setting to F2.4.

Here’s a very close look at that switch in action:

You can check out the full teardown in the video at the top. And stay tuned, because we’ll be bringing you a full smartphone camera review of the Samsung Galaxy S9 just as soon as we can put a unit through its paces.

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From:: DPreview

Hands-on with the Samsung Galaxy S9 and S9+

Hands-on with the Samsung Galaxy S9+

Samsung has announced its new flagship smartphones, the Galaxy S9 and S9+, at the Mobile World Congress in Barcelona. While changes on the surface are pretty subtle, under the hood the new models offer a range of interesting features and functions.

With its dual-camera setup, the S9+ looks like the more appealing S9 model to mobile photographers. We’ve had the chance to take a closer look at the device during the launch event. Here’s what you should know.

Subtle design changes

The S9 generation’s design language is very similar to its predecessors, and with its rounded edges the new models are comfortable to hold. However, Samsung has made some refinements to refresh the devices’ visual appeal and improve handling and operation.

Most importantly, the fingerprint sensor has been moved from next to the the camera lens to below the camera module, preventing any accidental touching and fingerprint-smearing of the latter.

In addition, the S9+’s 6.2-inch Super AMOLED display has been reinforced with thicker Corning Gorilla Glass 5, and both bezels and the screen itself come in a deeper black color to better conceal the iris sensor at the front and create a more minimalist look. Both S9 models are available in four colors: Midnight Black, Titanium Gray, Coral Blue, and Lilac Purple.

Dual-camera with tele-lens

While the S9 comes with a “traditional” single-lens camera, the S9+ is the first Samsung Galaxy S model to feature a dual-camera for improved zoom performance and a background-blurring portrait mode. Both cameras come with a 12MP pixel count and optical image stabilization.

The big news has to do with the wide angle lens on the main camera, which features a variable F1.5/F2.4 aperture → continue…

From:: DPreview

Sony Xperia XZ2 brings 4K HDR video to smartphones

Sony Mobile’s contribution to the Mobile World Congress 2018 comes in the shape of the Xperia XZ2 and XZ2 Compact smartphones. With a 1/2.3″ 19MP image sensor and F2.0 aperture the basic camera specs remain unchanged from the predecessors, but the cameras in the new models offer a couple of improvements that will be especially welcome by mobile videographers.

The Xperia XZ2 and XZ2 Compact are the first smartphones capable of recording 4K HDR video footage, using the Hybrid-Log-Gamma (HLG) standard. This means 4K HDR clips shot on the XZ2 will be playable on most HDR-capable TVs and can be processed by Youtube.

The phones are capable of processing the massive amounts of data that is recorded for HDR video thanks to a built-in DRAM buffer in the imaging chip. The same technology also helps drive Sony’s motion-eye super-slow-motion mode that was first introduced last year. The 2017 Sony flagships could record 960 frames per second at HD resolution for 0.2 seconds, resulting in 6 seconds of playback time – the same as on the brand new Samsung Galaxy S9.

The new models come with an 18:9 aspect ratio display.

On the new XZ2 Sony has taken things one step further and offers the same frame rates at 1080p Full-HD resolution. On the downside, recording time is cut in half, to 0.1 seconds, resulting in 3 seconds of playback time. Super-slow-motion clips can be embedded in standard video, though, so there is plenty of opportunity to get creative with the super-fast frame rates.

Both new devices are powered by Qualcomm’s latest top-end chipset, the Snapdragon 845 and come with Full-HD displays with 18:9 aspect ratio – 5.7″ in size on the XZ2 and 5″ on the Compact model. → continue…

From:: DPreview