Bruit et dynamique cadre rangeAs de notre processus de test cam?ra nous tirons un tableau qui nous permet de mesurer la dynamique d’une cam?ra et de la quantit? de bruit qu’il produit. Plage dynamique d’un appareil photo est une mesure de sa capacit? ? enregistrer des niveaux de luminosit? diff?rents au sein de la m?me image. Un appareil photo avec une grande gamme dynamique (DR), par exemple, peut enregistrer des d?tails tels que les nuages ??brillants ainsi l’herbe dans un paysage. Les nuages ??seront ?puis?s d’un uniforme blanc par une cam?ra avec une gamme dynamique faible. Le bruit est la mouchetures de couleur (le bruit de chrominance) et des marbrures claires et sombres (le bruit de luminance) qui peut ?tre vu dans certaines images. Le bruit devient plus visible quand haute sensibilit? (ISO) param?tres sont utilis?s ou les images sont souffl?es ? faire des grands tirages. Le chartWe fusiller nos bruit et plage dynamique tableau ? chaque sensibilit? (ISO) de r?glage disponibles et d’analyser les images en utilisant le logiciel DxO Analyzser. Le logiciel mesure le signal et le bruit qui rend l’image et lui donne un rapport signal sur bruit (SNR) de valeur. Le sup?rieur de la lecture SNR, le nettoyeur du signal d’image et de r?duire le bruit de la valeur. Un SNR ?lev? est g?n?ralement pr?f?rable ? un faible RSB. Cependant, un SNR ?lev? ? des sensibilit?s ?lev?es peuvent ?tre attribu?s ? un certain temps dans l’appareil de r?duction de bruit et de lissage de l’image, qui peut d?truire en d?tail. Notre tableau de bruit et plage dynamique, est fourni par DXO et elle est compos?e d’une s?rie de filtres en verre optique pur avec une gamme de densit?s neutres mont? dans une plaque de plastique ?pais. Le tableau est organis? sur une bo?te ? lumi?re sp?cialement fait qui produit diffuse un ?clairage uniforme. L’utilisation d’un verre de probl?mes cibles d’?clairage et d’?viter les incoh?rences qui sont souvent associ?s ? des cartes imprim?es pour l’?valuation de la plage dynamique. Le verre supprime ainsi la question de la texture du support qui peut cr?er des probl?mes de bruit pour une mesure pr?cise des cibles imprim?es. Notre laboratoire d’essais est mis en place suivant les directives de DxO et des images de la carte sont ?valu?s en utilisant le logiciel DxO Analyzer pour g?n?rer rapport signal sur bruit (SNR) et des valeurs dans une plage dynamique large d’une cam?ra de sensibilit? compl?te – pour les images RAW et JPEG. Si le logiciel n’est pas compatible avec les fichiers RAW d’un appareil photo, nous les convertir au format TIFF et analyser ces images. Nous avons seulement comparer des fichiers du m?me format, JPEG avec JPEG, TIFF et RAW avec des mati?res premi?res avec le TIFF. Suivez les liens pour plus d’informations sur DxO Analyzser
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Review Samsung Galaxy S II Epic 4G
Smartphone Samsung is selling faster than ever, finally landed in the United States. Samsung Galaxy S II will be sold by Sprint, T-Mobile and AT & T and Verizon are required to provide the same type of phone in the near future. Sprint’s first model was launched under the moniker Epic 4G Touch and I use almost non-stop last week. “Samsung S Galaxy II, Touch, 4G Epic” is a strong competition among the ranks of Sprint’s 4G phones. Can you keep up? Read my full review during which the other sweet, I see the device as simple as the touch 4G Epic.
There are probably many people who think of light and fine touch 4G Epic feels cheap. I do not blame them. HTC devices sold aluminum or solid rock with beautiful soft-touch rubber case monocoque and the Apple iPhone is made of four metal and two sheets of glass. The Epic Touch 4G is not as strong, but better than most phones and of course issues a bond in the atmosphere. The Sprint model is almost identical to the European S GALAXY II, but offers a slightly modified design industry. The edges and rounded corners, angles unlike the AT & T and European models.
The Epic 4G Touch is powered by a 1.2GHz dual-core processor Exynos Samsung was much slower execution of any process, I threw it. Applications opened and closed almost immediately and was significantly faster than loading the droid, which has a single processor core running at 1 GHz
Samsung 4G Epic Touch offers a superb 4.52-inch AMOLED Samsung Super show. Despite sporting a lower resolution 800 x 480 pixel display that many other handsets with screens QHD, Super Plus AMOLED screen is still my favorite on the market. Blow Me Away colors every time, and the screen has received more than a few compliments from friends and strangers who have seen it. The volume rocker is easy to reach on the left side of the phone, no 3.5 mm headphone jack on top, resting on the power button at the top right, and we microUSB port on the bottom. The muscle cell phone hardware, one would think that would be an HDMI output as well. Unfortunately, this is not, but you can purchase an accessory to connect your phone to HDTV
read full article : here
The reason Apple launches new iPhone within the next two months
Although there have been credible and report leaks, Apple has played a game of chess not only an expert confuse competitors but also the technology press. One leak contrary to another report, one major publications Other publications main contrary, one notes the analyst conflict with other research note. Let’s break this logic, together. Apple has the iPhone 4 that more than one year and still best-selling smartphone in the world. In fact, it’s still the best-selling smartphone in almost every operator in the world that sell them. Apple could easily be updated with the A5 processor company and an 8-megapixel camera, but Apple is really going to break from the traditional summer release schedule just to throw garbage on the new CPU and a camera? What’s the point? Read on for more.
IPhone is Apple will sell 4 at $ 99 and “iPhone 4S” of $ 199 in addition? Nearly identical phones in terms of physical appearance? Someone walked into a store will have to choose between the iPhone with a faster processor and a better camera and one with a slower processor and the camera is still big? Hardly. If there is even an actual iPhone 4S – one that not only for the sole purpose of high profile developers to use the IOS sled tests for new Apple hardware that comes in the iPhone 5 – I would bet that he will replace the iPhone 4, but the iPhone still will 4S entry-level iPhone.
Why? Because Apple was able to take, what, 15%-ish margin hit to give the iPhone a better to a better price than $ 99 on contract. Companies can introduce only with 8GB of storage, too, makes some of the cost of the CPU component A5 and 8-megapixel sensor. Why would Apple do such a thing? This not only will damage competition, it will destroy, damage, and eliminate them. And if the iPhone 4S actually only developer tools, then the iPhone 4 will move to entry-level space to make room for the star of the show.
Then there are 5 iPhone that everyone is waiting (and hoping) for the $ 199 / $ 299, which would leap above anything the competition can offer. IPhone iPhone 4 or 4S – no problem. A redesigned iPhone 5 will come too. It will be faster, it will probably thinnest smartphone in the world, and it will probably introduce a motion in addition to voice control capabilities. That looks like my scenario, and hey … even Al Gore said some of iPhone launch next month.
source :http://www.bgr.com/2011/09/21/apple-is-unveiling-two-new-iphones-next-month-and-heres-why/