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  • Coque iphone 4s dragon ball super Apple iPhone 7 versus the Apple iPhone 7 Plus using our new test p-coque samsung a7 game of thrones-svbnqr

    Елена Бохорова

    Apple iPhone 7 versus the Apple iPhone 7 Plus using our new test protocol With our new DxOMark Mobile protocol, we can now test coque samsung a5 6 2017 and score the additional features enabled by the dual camera system of the Apple iPhone 7 Plus, and compare it fairly to the iPhone 7 and other flagship mobile devices. We published a review of the iPhone 7 coque samsung j6 Plus using our new protocol, and re tested the Apple iPhone 7 with it as well. In this article, we highlight how we tested the iPhone 7 Plus additional Telephoto and Portrait features, and how they contribute to its higher overall score. iPhone 7 Family: Recapping features common to coque coque samsung s10 samsung j3 2017 pas cher both coque samsung a8 2018 one piece models With the launch of the iPhone 7 and 7 Plus, Apple improved its already excellent cameras from the previous generation, and added a variety of new coque samsung a20e premium features that it hopes will continue to make the iPhone the world most popular camera. https://www.loiregrafix.fr/products/coque-samsung-galaxy-s7-ralph-lauren-bln9097 Both phones also use a new, wider color gamut, making for richer colors when used with Apple or other high end displays that support the DCI P3 standard. https://www.loiregrafix.fr/products/coque-samsung-s6-et-s7-compatible-bln8082 Apple is also proud of its new algorithms running on a beefy new image processor that melds together several images to create the best possible result. Based on our tests, we show you how the new technologies measure up. The iPhone 7 and 7 Plus offer great exposures with wide dynamic range, accurate white balance and color rendering, as well as good detail preservation when shooting outdoors in bright daylight. This has garnered both models excellent photo sub scores, with the only weaknesses showing up in low light a loss of very fine detail, some focusing irregularities in all lighting conditions, and some visible luminance noise. Remarkable stabilization in video mode, together with fast and smooth coque samsung galaxy a5 2016 amour autofocus, nice details, and vivid color in bright light, produced a high Video sub score of 76 points for both phone models. iPhone 7 Plus: The second camera makes the difference The iPhone 7 Plus features additional capabilities based on its dual camera architecture. It uses the second camera for a 2x optical zoom and computed depth information. Its new coque samsung duos galaxy a6 Portrait mode is designed to use the depth information gleaned samsung a40 coque cuir from analyzing the images from both of its cameras to selectively blur image backgrounds while keeping the foreground subject sharp. This is intended to mimic the shallow depth of field effect and pleasing bokeh that photographers who use high end standalone cameras can achieve. Since the difference between the two phones is the iPhone 7 Plus second rear camera, and its use for telephoto (Zoom) images and computational bokeh (depth effect, seen in Portrait mode), we start our comparison with an overview of how the additional camera works, as well as its strengths and weaknesses. Dual camera specification on the iPhone 7 Plus The additional rear camera on the iPhone 7 Plus is quite a bit different from its primary camera. It maintains the 12MP resolution, but features a longer focal length lens (56mm equivalent), which in turn drives the need for a slightly smaller aperture (f/2.8), as well as a smaller sensor size (about 2/3 coque huawei p20 as large) to kep the iPhone 7 Plus as thin as the standard iPhone 7. In turn, the smaller sensor size means that the pixels on the second camera are also slightly smaller (1 micron versus 1.22 microns on the primary camera), and therefore more coque samsung a20 dragon ball susceptible to noise. Along with the second rear coque samsung s8 camera comes a new 2x telephoto mode that provides optical zoom capability. In addition, when the phone camera app is set to Portrait mode, the phone uses both cameras to create coque samsung a40 disney chat a simulated bokeh (depth effect). Understanding the iPhone 7 Plus optical zoom Lack of a true optical zoom has been a glaring limitation of smartphone photography. The iPhone 7 Plus introduced a way to shift coque transparente samsung a50 the camera from wide angle to a true telephoto mode while zooming. While not technically a zoom lens, the longer focal length of its second lens gives the iPhone 7 Plus the ability to coque samsung a70 terrapin capture native images at a 2x zoom (56mm full frame equivalent as opposed to 28mm). This implementation provides some important benefits. Using optics for tighter composition typically produces a more detailed image than can be obtained by digitally zooming, which simply crops the image from the wide angle camera. In addition, longer focal lengths allow the subject to be positioned further away from the camera, which reduces such deformations as unnaturally large noses often seen in portraits shot with wide angle lenses relatively close to the subject. The following sample images were captured in 1x and 2x modes: If we attempt to recreate the 2x zoom digitally (as with the iPhone 7, for example), the resulting image is not nearly as sharp as the photo on the right taken with the iPhone 7 Plus true optical zoom. The image shot under bright light at 2x zoom also shows that the iPhone 7 Plus captures more details than either the iPhone 7 or the Google Pixel. Scoring Zoom on the iPhone 7 and 7 Plus We seen that the longer focal length of the lens on the 7 Plus provides more details in telephoto images captured in bright light. However, there are trade offs inherent in Apple dual camera design, because the secondary camera has a smaller sensor and slower lens (smaller aperture) than the primary camera. It also lacks Optical Image Stabilization a coque samsung a8 2018 noir design decision that was likely made to accommodate the longer focal length 56mm (full frame equivalent) lens that has to fit within the shallow depth of the iPhone. To evaluate how well coque clapet samsung galaxie a10 these trade offs succeed, we used our new Zoom protocol to test both devices at a variety of focal lengths. Our testing uses varied lighting conditions ranging from very low to bright light, to provide an understanding of how the devices perform in real world situations. What we found was that in bright light the 7 Plus dual cam offered a significant advantage. In dim light (for example, the 100 Lux measurement in the chart), the 7 Plus had a slight advantage in detail, while in low light (for example, the 20 Lux measurement), the cameras essentially performed identically. That is because in low light, the 7 Plus relies on its traditional wide angle camera, so the images produced are very similar the ones taken with the iPhone 7, and lose detail compared to those from the Google Pixel. We compare zooms by setting the camera zoom to a 50mm and 85mm full frame equivalent field of view by using whatever zoom method the camera supports (optical, digital, or hybrid) so that the full target is framed. We then evaluate how a specific area of the target is coque samsung coque huawei p8 galaxy a5 2015 chat rendered by each camera by measuring sharpness in object space. This means that we evaluate the detail on a subject of interest at a fixed distance from the photographer. As expected, the additional camera with telephoto lens contributes to the higher Zoom sub score for the iPhone 7 Plus. However, while the telephoto lens on the second camera of the 7 Plus is a win in good lighting, challenges in combining images from the two cameras and the use of the main camera in low light mean that it scores only 9 points higher 46 versus 35 for Zoom than the iPhone 7. While that is a noticeable difference, it doesn put the Plus much ahead of the Nokia 808 PureView, which scored 42 using a different approach with its very large 41MP sensor and cropping. https://www.loiregrafix.fr/products/coque-samsung-galaxy-j5-vampire-diaries-bln8719 There is also still quite a bit of room for improvement in smartphone Zoom capabilities when we compare them to what is possible with a standalone camera, as shown in these crops from Zoom test images: Scoring Bokeh on the iPhone 7 Plus (Portrait mode) A major differentiator of high coque samsung a10 bleu marine end standalone cameras such as DSLRs, when compared to smartphones, is their ability to let the photographer create images where the subject is razor sharp, and the background is pleasantly blurred. Typically, this shallow depth of field effect is achieved by coupling a wide aperture lens with a large sensor. Conversely, smartphones have very small sensors, so even those with relatively fast (wide aperture) lenses are incapable of creating images with a shallow depth of field and blurred background. Various desktop software tools can be employed to achieve a simulation of this effect during post processing, but they require a considerable amount of manual intervention to select the subject area, then determine how much blur to apply. The goal of Apple new Portrait mode, and specifically of its Depth Effect, is to automatically mimic the results that can be obtained by DSLRs at the time of capture. Depth Effect: Partial simulation of shallow depth of field The iPhone 7 Plus can actually create the effect of depth with its optics because of its small sensors and short focal length lenses. However, by using images taken simultaneously with its dual cameras, it can in fact create a simulated depth effect in real time. The iPhone first estimates the distance of each object in the scene, after which it calculates exactly how much blur to apply to each portion of the image, with more blur applied to those objects determined to be further away, while keeping samsung a50 coque en bois objects on or near the plane of focus sharp. Apple appears to have deliberately chosen to reduce the effect on foreground objects, most likely to prevent artifacts. https://www.loiregrafix.fr/products/coque-samsung-alpha-chic-pascher-jil5030 Technical Note: There are a variety of ways that a shallow depth of field can be simulated in software, but some of them begin by estimating the distances to objects in the scene to create a depth map. https://www.loiregrafix.fr/products/coque-samsung-galaxy-grand-prime-montagne-bln9604 Because its two cameras are offset, each with a slightly different view of the scene, the iPhone 7 Plus is able to use the relative shift of objects between them, or parallax, to estimate how far away elements in the scene are from the camera itself. This technique is employed when the camera app is set to Portrait mode, which is when the Depth Effect is activated.

    Елена Бохорова / 2020.06.20 / no responses / Метки: , , , , , , , , ,

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