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The main difference between Samsung Galaxy S9 and all other smartphones

In the evening of March 8, the first reviews of the Samsung Galaxy S9 smartphone will be published in Russian editions – this is the limit for the time of their publication (embargo) against journalists who have taken test samples from the company. Some of them received them before the official announcement (which is not bad), but I received only two days ago (nothing to worry about) and is still not fully informed about my impressions.

But even before I was able to actively use the new smartphone from Samsung, I quickly examined it at the company’s stand at the Mobile World Congress in Barcelona. All around, for some reason, it surprises that Samsung has not copied Apple’s “bang” from the iPhone X, as many other manufacturers did – but in my opinion it’s obvious that with the Galaxy S8 the company goes its own way, releasing a smartphone in the original design, and copying it into The forehead is no longer comme il faut.

Personally, I was most intrigued by the variable aperture of the Galaxy S9 camera, because in the usual, that in the Plus version of the Galaxy S9 there is only one camera behind. When the company employee showed how the diaphragm switches from f / 1.5 to f / 2.4 and back, it really made a wow effect on me: I’m used to this in cameras, but not in smartphones where the camera has always been static part of the external design.

In fact, the S9 is not the first smartphone with an adjustable aperture. In 2017, Samsung released an “elite clamshell” W2018 with the same camera feature, but sold it only in the Chinese market. Back in 2009, Nokia released the N86 with an adjustable diaphragm (and also with 8Mp immense for those years), and a year before Motorola released the first phone with an adjustable aperture – ZN5 : it had a camera from Kodak, however, for the title of smartphone it pulled feebly.

In this regard, many technology publications ( Trusted Reviews , CNet , ForbesTechnology Department ) even had to remind their readers about the difference between the apertures f / 1.5 and f / 2.4, which means these figures, and in general – What is the diaphragm and how does it work in the camera. Briefly, the diaphragm is the opening in the chamber through which light passes: the larger the opening, the more light will pass during the same time. The larger the digit on the exponent, the smaller the hole – f / 2,4 passes about 50% less light than f / 1.5.

The meaning of different diaphragms is that one will work well in the dark, when you need to skip more light, and the other – into the light, when the bright sun can make the photo overexposed. In principle, it’s easy to fight with bright sun and with the help of decreasing exposure – but in the case with the dark time of the day it will not be possible to increase the exposure, because then the photo will be more lubricated because of trembling hands.

In Galaxy S9, when auto mode is on, the camera decides which diaphragm to use and switches between them automatically. But there is also a “professional mode” where you can manually adjust all the shooting parameters – including the aperture used.

Using an adjustable diaphragm, Samsung does not actually do something supernaturally steep – because in systems with dual cameras (like the one that the iPhone has several last generations), there is also an automatic change of apertures, they are just in different cameras, but not one. In addition, without a dual camera, you can not realize a “fake” optical zoom without losing quality (as is done in the iPhone and LG G5), and some other functions like the AR could benefit from a dual camera or additional sensors that are on the back of the Galaxy S9 is not.

The rest of the thought about the Samsung Galaxy S9 – later.

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