#SonyXperiaZ5Premium

[sprreviews]

Sony Xperia 5 mark lll An optical telephoto lens up to 105 mm Compact design, powerful. × 4,500mAh battery × Real-Time Eye AF × 6.1”display × 21:9 CinemaWide × HDR OLED × 120Hz refresh rate × Snapdragon 888 × 8gb ram × 128gb storage × 12mp wide angle × 12mp ultra wide angle × 12mp telephoto × 3.5mm audio jack × Gorilla glass 6 × 8mp selfie camera × ⚫ Black × 🟣 Purple × 🟤 Brown @sonyxperia @sonyxperiaus #techtravelingtripod #sonymobile #sonyxperia5iii #sonyxperia1iii #sonyxperia10iii #sonyxperia #sonycameras #sonymobile #sonyxperiaz5 #sonyxperiaxa1 #sonyxperiaz5premium #Qualcomm #Snapdragon888 #corning #gorillaglass6 #eyeautofocus #realtimetracking #camerafeature #120hzdisplay #dailytechnews (at Xperia) https://www.instagram.com/p/CNpBssDJUZe/?igshid=4of9p8mj92l3

[sydstra247]

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[appliancesreviews]

Which smartphone screen is not harmful to the eyes?

According to statistics, a modern person uses a PC or smartphone for up to 10 hours a day. Of course, this mode significantly increases the load on the eyes. Therefore, this aspect excites many people. Usually, a person blinks about eighteen times per minute. This frequency provides constant hydration with tear fluid. But while working on any display, a person on average blinks only 2-3 times per minute. Accordingly, hydration is reduced by almost 10 times. As a result, the eyes begin to watery. Myopia due to eye fatigue, can be true or false. False myopia due to spasms of the eye muscles reduces the clarity of image perception. But these sensations quickly disappear even after a short rest. Unfortunately, the constant tension of the eye muscles provokes the occurrence of true myopia, in which the shape of the eyeball is slightly elongated.

In this case, the person is forced to constantly use glasses. But choosing a model with optimal screen can minimize these risks. Of course, camera, smartphone performance, smartphone storage, operating system, price, etc remain the main criteria when choosing a model. But screen with optimal PPI (pixels-per-inch), brightness and backlight technology will reduce eye strain.

PPI

In terms of ophthalmology, eye fatigue is inversely proportional to image clarity. In other words, the eye strains as much as possible when viewing a blurred image. As known, PPI is the ratio of resolution (in pixels) to diagonal size (in inches) and directly affects the image clarity. Therefore, a small screen with high resolution requires much less eye strain compared to a large screen at low resolution. In fact, at low resolution the eye is constantly forced to adjust the sharpness, which leads to fatigue of the eye muscles. Today the Internet offers an abundance of online calculators that automatically calculate the PPI of any smartphone based on its diagonal and screen resolution.

For example, the PPI of a 4.3-inch HD (720 × 1280) screen reaches 342, and the PPI of a 4.7-inch HD display does not exceed 312. Accordingly, the first model will be more comfortable for the eyes. Modern models with a 6-inch Full HD (1080p) screen provide 350 ppi and higher. 8-inch models already require Quad HD (2560 x 1440) resolution to provide this pixel density. Large 12-inch models use 4K Ultra HD (3840 x 2160) screens to provide the required PPI. Sony Xperia Z5 Premium was the first to use an Ultra HD display on a 5.5-inch screen, providing a pixel density of 806 ppi.

Of course, this model is the most comfortable for the eyes. But overall, 300 ppi and higher is considered a good value. According to many experts, the person ceases to perceive the visual difference at a pixel density of 300-350 ppi and higher. Therefore, many companies limit their models to these values. But in terms of ophthalmology, this consideration seems controversial.

Brightness and backlight technology

As known, the human eye is poorly adapted to the perception of direct bright light. Therefore, many use sunglasses. But the screens of a smartphone and other digital gadgets are forced to use bright backlight for contrasting perception of images in bright external lighting. On the other hand, it will be redundant in low light conditions. Of course, the smartphone model does not affect vision in this case. Today, even budget smartphones have a brightness control, providing optimal settings depending on the surrounding lighting. But the screen brightness also depends on its type. For example, LCD screens use continuous backlight technology. Therefore, the bright light from the backlight LEDs constantly affect the eyes. As known, all OLED displays, including AMOLED, Super AMOLED, Super AMOLED Plus, P-OLED and Dynamic AMOLED, use their own radiation from organic diodes and do not have a backlight. As a result, the eye perceives light only from active pixels on the screen. At the same time, all other screen pixels are completely black. Of course, such a screen has a minimal effect on the eyes. But many users consider the higher brightness of the LCD vs AMOLED a plus.

Unfortunately, screen flicker due to PWM in OLED screen increases eye strain.

Conclusion

Thus, OLED models with high PPI minimize eye strain. But today only expensive models have large screens with high PPI. Mid-budget models provide no more than 300 ppi for 5-inch screens. In addition, the relatively low brightness of OLED screens reduces the saturation of colors. For these reasons, Retina displays from Apple with pixel densities of 300 ppi or higher have very good prospects.

Today, the company already offers OLED Super Retina display on the iPhone X, iPhone XS, iPhone XS MAX and LCD Retina display on the iPhone XR. This video shows the iPhone XS Super Retina (OLED) vs iPhone XR Liquid Retina (LCD). Read the full article

[litterator]

Long Goodbye, Street Photography, Street Life, Street Vendor, Woman Standing, WeekOnEyeEm, Mobile Photography, Multi Colored, Flowerlovers, Nature, Photooftheday, Outdoors, Buildings, Women, Sony Xperia Z5 Premium, Flower Photography, Wide Angle at Metro Delisi | მეტრო "დელისი" by Tamar Mirianashvili on EyeEm

[pietroking]

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[thevictorofficial]

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[disnapper]

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[abhijit-v-blog]

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[appliancesreviews]

Key specs of the Smartphone Screen

Of course, smartphones are among the most technological devices in the segment of modern consumer electronics. Over the past decade, the phone has turned into a universal handheld PC with fairly high-quality multimedia features, including a camera, projector, etc. Blackview MAX 1 Projector Mobile Phone with a projector function, Desktop Mode in Android Q 10 and foldable smartphones perfectly illustrate this trend. As a result, today smartphones are leading in popularity. Of course, companies adequately respond to huge demand, constantly improving technology and offering innovative models. As a result, the technical specifications of the new models are improving rapidly. Companies already offer multi-camera smartphones, including Sony with an unprecedented 8 cameras, models with 8-core chipset, including OnePlus 7 Pro with Qualcomm Snapdragon 855, ultrafast UFS storage, 64-MP cameras with Sony IMX686 image sensor, etc. Of course, the screen is one of the main components of the smartphone, and the pace of its improvement is consistent with the general trend. Companies continuously offer innovative displays with new technological solutions, including LTPS, IGZO, or Super and Dynamic AMOLED, etc. As a result, their specs are rapidly improving.

Resolution and PPI

As known, the resolution directly affects the image clarity and is one of the main characteristics of screen when choosing a smartphone.

But smartphone manufacturers often also use PPI (pixel per inch). Physically, both of these parameters characterize the number of pixels on the screen. But the resolution indicates their total number on the screen, and PPI takes into account their number per unit area. In general, PPI is more informative since it takes into account screen size. For example, a 4.3-inch HD screen has a pixel density of 342 ppi. But it drops to 312 ppi for 4.7-inch screen. On the other hand, many consider 300-350 ppi optimal. According to many experts, at a standard distance, the eye ceases to perceive a further increase in pixel density. Nevertheless, many companies continue to increase it, including for marketing purposes. Today, only some budget models continue to use screens with 720p (HD) resolution (1280 x 720).

Most popular screens

- 1080p (Full HD, FHD) - 1920 x 1080 - good resolution for a modern smartphone. It provides 440 ppi / 400 ppi for 5-inch / 5.5-inch screens, and drops to 367 ppi for a 6-inch screen. Unfortunately, for a 10-inch screen, the pixel density does not exceed 220 ppi. Today many popular models, including OnePlus 3, Sony Xperia X, Huawei P9 and iPhone 7 Plus use Full HD screens; - 2K (QHD, Quad HD) - 2560 x 1440 - excellent resolution for screens up to 8 inches (367 ppi). QHD (Quad HD) is four times the HD resolution. Accordingly, 5.5-inch QHD display has a pixel density of 538 ppi. For comparison, the pixel density of a 5.5-inch Full HD screen is 400 ppi only. Strictly speaking, 2.5K would be a more accurate name for it. The list of popular models with this resolution includes OPPO Find 7, HTC 10, Nexus 6P, Moto Z, Galaxy S7, LG V20. But the difference between OPPO Find 7 with QuadHD and OPPO Find 7a with Full HD weakly visualized for 5.5-inch screens.

- 4K Ultra HD (4K, Ultra HD) - 3840 x 2160 - expensive smartphones with a screen up to 12 inches. Sony Xperia Z5 Premium was the first to use an Ultra HD display on a 5.5-inch screen, providing a pixel density of 806 ppi.

But many experts consider this resolution too excessive for such screens. Today, the Samsung Galaxy Note 10 Plus display also supports 4K Ultra HD. But companies are unlikely to continue to increase resolution due to the high power consumption of models with a large diagonal. Probably the trend of increasing resolution is nearing completion.

Color gamut and smartphone screen refresh rate

It affects color rendering, including color saturation and number of shades.

The displays of modern smartphones support the following standards: - sRGB - the most common format in smartphones, covering 33.3% of all visible spectrum; - DCI-P3 (Digital Cinema Initiatives) is used in digital cinemas and covers most of the spectrum. It exceeds sRGB by 26% and covers 41.8% of color space; - BT.2020 format is used by Sony in smartphones and TVs. It covers 57.3% and is 72% wider compared to sRGB; - Apple use Wide color Gamut in the iPhone. It covers 77.6% of the visible color spectrum. Screen refresh rate characterizes the refresh rate of the image on the screen. Typically, companies use 60 Hz. But some smartphones support 90 Hz. iPhone frequency reaches 120 Hz. Xiaomi Black Shark 2 already reached 240 Hz. In fact, this is a gaming smartphone. As known, high frequency provides smooth playback of highly dynamic scenes, for example, in games.

Conclusion

The screens of modern smartphones already provide excellent resolution, including 4K Ultra HD, wide color gamut and a huge screen refresh rate (up to 240 Hz). Energy consumption and sizes factors limit the further increase in smartphone screen resolution. On the other hand, companies continue to actively improve matrix production technologies, improving their characteristics and eliminating typical shortcomings. In addition, competition between OLED and LCD technologies is also driving innovation in this segment. Probably, further improvement of the screens will move due to this factor. This video demonstrates the great features of Xiaomi Black Shark 2 Pro in gaming mode. Read the full article

[litterator]

New York City, Subway, Subway People, Mobile Photography, Double Exposure, Welcome To Black, Subway Portraits, Social Documentary, Everyday Life, WeekOnEyeEm, Sony Xperia Z5 Premium, Travel Photography, Black And White at MTA Subway - Elmhurst Ave (M/R) by Tamar Mirianashvili on EyeEm

[fafaweng]

大家知道我就是愛 SONY 。剛好在我上週回彰化發現我手機不見了 （回台北後感謝好心人士幫我撿到了我的 #sonyxperiaz5premium #SONYXPERIAZ5P ❤ 開心取回了樂樂） #SONYXPERIATW #sonyxperiaxzpremium #SONYXPERIAXZP 這間 #SONYMOBILE 彰化店 不是我在浮誇，我從黑白到彩色到音樂到智慧📲 真的是忠貞🤣💦（在 Sony Mobile 彰化光復專賣店）

[kritsukara]

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[pietroking]

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[litterator]

Flowers on the wall. Flowerlovers, Flowerbed, Onthewall, Nature, Mother Nature, Plants, Cracked Wall, No People, Gardening, Flower Photography, Mobile Photography, WeekOnEyeEm, Wide Angle, Sony Xperia Z5 Premium, Multi Colored, Building Exterior at ეზო | Ezo by Tamar Mirianashvili on EyeEm