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Are equally 8 MP Camera iPhone 5S More Strikes

Posted by Unknown Senin, 16 September 2013 0 komentar

In the middle of the "megapixel wars" antarprodusen smartphones, Apple took a bit of a surprise move with fixed pairing 8-megapixel iSight camera for its new flagship phone, the iPhone 5S.

The number is the same as the camera that had been used the previous two generations of the iPhone, the iPhone 4S and iPhone 5, so that eliminates a little attraction iPhone 5S in the eyes of a novice user.

However, if the iPhone 5S camera actually the same as their predecessors? It was not well. According to Apple, is actually a series of improvements have been implemented under the number "8 megapixel" that seem conservative. What is it? Here's the translation of KompasTekno, as excerpted from TechCrunch.

Larger sensor

High resolution does have its own advantages. Take the example of the Nokia Lumia 1020 with its 41 megapixel camera which is claimed to capture photos so detailed that can perform digital zoom without degrading the quality.

Rather than increase the megapixels, Apple decided to take the opposite, namely to maintain a resolution of 8 megapixels, but by increasing the size of the sensor to be 15 percent larger than on previous iPhone cameras.

Photodiode size (pixels) on the sensor which captures light duty was increased from 1.4 microns to 1.5 microns.

This step is similar to that made by HTC through Ultrapixel cameras, where each pixel size was increased to 2 microns. However, the camera on the HTC One cut to just 4-megapixel resolution, while Apple still maintains an 8 megapixel camera.

So, what is the importance of the larger pixel size? Imagine pixels is a bucket and a light rain was coming down from the sky. The wider the bucket, the more water that can be accommodated within the same time period. That is, the light information that can be captured much more.

This leads to image quality-at least theoretically-better. Tone colors captured more diverse with a smoother transition, the level of noise (grain) that appears in the photograph can be reduced.

To increase the light sensitivity further, Apple also expanded the size of the aperture on the camera to f2.2 iPhone 5S or fourth stop wider than F2.4 aperture on the iPhone 5.

Apple claims increase by 15 percent the size of the sensor also increases light sensitivity as much as 33 percent. However, even with magnification, the iPhone 5S camera sensor is much smaller than a pocket camera owned (Canon PowerShot G15) though, as can be seen in the above comparison, especially when compared to a DSLR camera (Nikon D7000) that times-fold more large.

Quality iPhone 5S catches image can not be assessed while the device was still absent in the market. However, the sample photo below seems quite promising for the size of a smartphone camera.

Apple A7 processor

Not only sensor on the camera are changed by Apple. Apple's new A7 processor also contribute to improving the quality of the images.

This processor has the Image Signal Processor (ISP) integrated, or commonly known as Digital Signal Processor in digital cameras. ISPs typically process all tasks related to image processing on iPhone 5S, including color correction, white balance settings, format conversion, and much more.

Well, the iPhone 5S ISP has a number of new capabilities, such as the so-called tone mapping to improve coverage in photos and tonal matrix Autofocus metering with 15 zone focus.

This latter feature commonly found in digital SLR cameras and is useful for generating accurate exposure even in difficult lighting conditions, for example when the user take a picture in front of the sunset.

A7 processor speed higher also allows iPhone 5S take multiple images at once in a single snapshot and choose the most good or sharp. This can be done either in single shot mode and the "burst mode" with a speed of 10 FPS.

For the burst mode, the iPhone 5S will automatically select the images based on a number of criteria, the accuracy of exposure, sharpness, face detection, as well as the people in the photo when the subject is smiling or closing his eyes. Analysis is performed in real-time without user intervention.

The best selection results were presented to the user to choose from. The purpose is to facilitate the automatic selection of the photo selection process burst which can amount to hundreds.

"Flash" two colors

The most striking difference from the iPhone 5S with its predecessor is the flash unit "True Tone" which has two LEDs with different colors, namely white and yellow.

What's the point? Flash on a smartphone or digital camera has a color temperature set to the same as sunlight. When used in the same light conditions with flash color temperature (such as fill-light in the daytime), the picture seemed to have a uniform color.

However, when users take photos with flash in different lighting conditions with the flash, such as in a room with a light yellowish color, the flash illuminated the subject will look different from the surrounding environment. A common color is the subject of "neutral", while the background color is too yellow.

Problem is to be addressed by the iPhone's flash 5S True Tone. With the two different LED colors, the flash is able to produce different color temperatures also vary to suit the environmental conditions.

On DSLR cameras, color temperature difference is usually overcome by making a colored flash light output equal to the perimeter. The trick is to put a colored filter (gel) in front of the flash.

Apple claims that the True Tone can produce 1,000 color variations to match the flash of light sources, from the candle flame until the sun in broad daylight. In addition to balancing the flash with color output environments, True Tone also known to produce skin tones are more natural subjects.

Two LEDs flash at True Tone will likely not "shoot" in full force on every snap because the iPhone 5 should balance the output ratio of the two to produce the required color combination.

For light conditions that are not too "yellow", for example, may be just the yellow LED will be lit with low intensity. So, should the output power of the flash True Tone would not be much different from previous generations.

In addition, True Tone can not seem to do much in the condition under fluorescent lights whose color is more likely to lead to the green spectrum, while it only has an LED flash additional yellow.

Penstablil image

Anti-shock mechanism or feature image stabilization on the iPhone 5S is quite interesting. According to Apple's description, to reduce the effect of blurring due to movement of the user when low-light conditions, the camera iPhone 5S take a lot of photos and take the parts most sharply in each of the image to produce the final image at an optimum sharpness.

Image Stabilization is actually tackle the problem only blurry because of camera movement, not subject movement, such as wind-blown leaves.

However, through a combination of anti-shock features and taking a lot of pictures at once (multi-shot), iPhone 5S should be able to deal with blurry because of camera movement and subject simultaneously.

Video "slow motion"

called the iPhone 5S can record 720p HD video in 120 fps frame rate that can be played back at 30 fps in slow motion so that it displays (25 percent).

Interestingly, users can choose to display the slow motion on certain segments in the video, while the rest are running at normal speed.

Panorama

The ability to record panoramic images with resolutions up to 28 megapixels actually been around on the iPhone 5. On iPhone 5s, image capture mode is enhanced even further through the automatic exposure correction features for each frame were combined into a panorama.

As a result, called the iPhone 5S is able to capture landscape photos with consistent exposure over different inter-area in the image, as in the example below.

There are also features shooting in a square aspect ratio (1:1), like in Instagram. This one is the default operating system iOS 7. Both slow motion mode, panorama, or square aspect ratio accessed through the main display and the camera application can be selected simply by swiping the finger.

teach iPhone

Improved camera iPhone 5S in terms of hardware and software is so that the smartphone can take pictures better. The purpose of this is explained briefly in the explanation of the concerned mobile phone camera on the Apple website.

"It makes more sense to 'teach' iPhone on how to take good photographs rather than train users in order to become an expert photographer," reads one sentence, as quoted KompasTekno from Apple's official website.

Users who know how to take good photos with a smartphone might be a little offended. Of course, a good photo is more determined by the user of the camera / smartphone device makers than the picture itself.

Currently, either consciously or unconsciously, every smartphone user is actually a photographer. However, the majority of users are not "expert photographer". In most cases, users want to take photos as good as possible, but do not have the training or experience to optimize the available tools. iPhone 5S try to present a solution to these problems.

IPhone 5S own ability remains untested. However, any improvement or automation on photographic devices potentially freeing the user to concentrate on the one thing that is more important than the technical issues, the aim and capture the image.

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Judul: Are equally 8 MP Camera iPhone 5S More Strikes
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