Wednesday, March 9, 2016

lab test – Samsung Galaxy S7 / S7 edge: a camera … – DigitalVersus

After analyzing their excellent displays and solid battery life, we will deliver our impressions and results of performance tests photo of Samsung Galaxy S7 and S7 edge. If they do better than their predecessors in many ways, even when there are some caveats due to image processing.

Samsung Galaxy S7
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Samsung Galaxy S7 / S7 edge have the heavy responsibility of succeeding in a series that has become the most successful picture in 2015. the Korean manufacturer has not only to renew the sound module GS6: he left on new bases. Thus, the GS7 exchanges the sensor 16MP its predecessor against the same sensor size (1 / 2.5 “), but 12.2MP, which mechanically brings larger photosites, but divided into two photodiodes. Furthermore, equipping the optical GS7 passes an f / 1.7 (cons f / 1.9 above) while maintaining the optical stabilization. Finally, GS7 / S7 edge incorporate a dual focus system AF pixel, hence the separation of photosites in two, as explained Bruno, our image expert, in a dedicated section.
Let’s look to start on the most notable point that had marked us since our first grip: the speed of the autofocus Galaxy S6 was very fast, but the Galaxy S7 would almost pass – and the iPhone 6S and LG G4 – for softies sedated.. as you read the article cited above on the Dual Pixel AF, you know that it is based on the entire sensor and its 24 million photodiodes, against only 0.8 million for GS6. In practice, the development speed is so fast that we simply do not perceive his action: it is truly stunning. Even achieving a burst while moving the camera, the Galaxy S7 succeeds – except for very rare exceptions, nothing is perfect – to follow topics. Speed ​​development if Swift does not suffer from a lack of processing speed. The SoC of this GS7 being more effective and having fewer pixels to handle, the image processing is in the same vein. To see the quiver (very little), you have to indulge in photography in near total darkness, and we’re talking about tenths of a second, which would remain acceptable in broad daylight on a good camera phone. The Galaxy S7 and S7 edge are simply the fastest smartphones in the photo, to date. Far, far away.

History of growing vice, we also repeatedly put GS7 GS7 and edge in shooting situations at many levels, from the front, with a sequential removal of each plan appreciate the speed or not autofocus. Result, every appearance of a new plan, the image seems to have been clear from the start, blur / net effect, even ultra fast autofocus typical deep in thought. Impressive. A technical feat that necessarily benefits also to the continuous autofocus in video mode.
 

We see here that say, “Yes, it’s fast your GS7, but the image quality in all this?” Luckily, we have it. Going from 16 to 12 megapixels, it is reasonable to expect a loss of detail in the clichés still talking about a 25% decrease in the number of photosites. Our picture scene brings us several answers.

In daylight, we note that the S7 shows a small loss of fine detail. The transition from 16 to 12MP there is obviously no coincidence. The GS7 / GS7 edge parade are a software to limit the damage by increasing the contrast. If indeed we must seriously address the stereotypes to see a real difference, images appear a little less natural than a GS6. Further momentum mouth a little dark areas, making it lose some detail. The optics of the latest additions to Samsung shows impressive enough, the edges of images retain a level of detail comparable to the center, only the ends of the corners show weaknesses. The GS7 and his accomplice edge are again the best on this point.

As you can see from our examples, the S7 shows a slight tendency to offer less neutral colors that opponents of the day. They are flattering and high contrast seems to bring out details. A matter of taste, shall we say, the opinions are shared. However, the most enlightened photographers tend to favor neutrality GS6 of clichés and reject the “brutal” treatment of his successor.
 

It is in low light than GS7 GS7 edge and make the best progress. Indeed, noise gives way to a more mild and pleasant smoothness to the eye. The white balance is fair and you end up with this less often orange appearance. Our ISO uphill test confirms that the photographs of GS7 are still easily readable at ISO 800, while the GS6 shows limits to ISO 400. Recall again that in these conditions, the most significant remaining capacity of the S7 / S7 edge to offer focus precisely the point and very responsive. The flash can in some cases lead to a somewhat dark subject but the management made by S7 and S7 edge varies. Sometimes overcompensates the device the center of the image (as evidenced by our Barbie tanned in the face-to-face) when the subject is far enough away, sometimes the treatment can not alleviate the vignetting effect if subject is too close. Using the flash will remain to be reserved for desperate cases.
We put face to face and GS7 GS7 edge with one of the references of digital compact cameras, the Sony HX90V. Surprise – or not – Samsung terminals are rising to the height of the NPC Sony, if not better. Certainly a compact like the HX90V retains an undeniable advantage of the optical zoom. This is one of the main areas of improvement for smartphones, and it is also likely that will enable compact yet survive for some time.

Like their predecessors, the S7 / S7 edge filming in 4K. In video, it is very simple, they recover much of the strengths mentioned above. The focus tracking is almost infallible, exposure metering is fast but not brutal, above the market stabilization is bluffing.

On the day of reckoning, a question arises: are the Galaxy S7 and S7 edge the best camera phones of the moment? Yes and no. Finally, it is not so much the loss of detail that one can blame them, it is the aggressive side of their image processing. The GS6 retains the advantage in terms of loyalty and neutrality most expensive picture in the eyes of experts. But the leap in speed of execution is really counteract this, as progress in low light. A simple upgrade could potentially alleviate this brutal treatment and pass the S7 in another dimension. If he does not claim as frankly as did his time in the GS6 under best smartphone photo, GS7 is one of the very best.

See you tomorrow for a full test Samsung Galaxy S7 and after tomorrow to that of its big brother, the S7 edge.

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