Sammlung von Newsfeeds

Hasselblad introduces Stellar II luxury enthusiast compact

Digital Photography Review - Di, 25/11/2014 - 21:03

Hasselblad has announced the Stellar II, an enthusiast compact which the company says has been 'conceived and crafted exclusively for aficionados, collectors, and connoisseurs'. Like other recent Hasselblads, the Stellar II is a rebadged Sony camera - which in this case is the RX100 II. Available grip finishes include olive, walnut, padouk, and carbon fiber. You can pick one up for yourself at a price of $2395/€1650.

Kategorien: Fotografie

Grounded: FAA may kill commercial drone operations by requiring a full pilots’ license

Imaging Resource - Di, 25/11/2014 - 20:16
    If you've been looking forward to the time when you can fly what the media loves to call a drone -- most likely, a quadcopter or some other form of multicopter -- legally, shoot aerial photos and videos, and then sell your works... Well, the time may be here to dial back those expectations. In fact, you might want to just drop them altogether, if a report from the Wall Street Journal is to be believed. (The piece can still be read free as of this writing, but will likely be disappearing behind the WSJ paywall shortly. If it does,...
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Kategorien: Fotografie

Nikon D750 shooting experience published

Digital Photography Review - Di, 25/11/2014 - 19:33

The Nikon D750 is a full-frame DSLR that mates features from the D810 with a 24MP sensor, providing a faster frame-rate than any non-pro full-frame Nikon DSLR since the D700. Its comprehensive still and video photography specifications are aimed directly at enthusiasts and full-frame upgraders. We've made a significant update to our D750 first impressions review including a shooting experience and studio scene analysis. Read more

Kategorien: Fotografie

This week's sponsor: Proposify

A List Apart - Di, 25/11/2014 - 16:52

Thanks to Proposify for sponsoring A List Apart this week. Learn more about their software to streamline your proposals and get faster sign-off.

Kategorien: Webdesign

Planning for Performance

A List Apart - Di, 25/11/2014 - 16:00
I want you to ask yourself when you make things, when you prototype interactions, am I thinking about my own clock, or the user’s? Paul Ford, “10 Timeframes” We’re not doing a good job

Page-load times in the ten-second range are still common on modern mobile networks, and that’s a fraction of how long it takes in countries with older, more limited networks. Why so slow? It’s mostly our fault: our sites are too heavy, and they’re often assembled and delivered in ways that don’t take advantage of how browsers work. According to HTTP Archive, the average website weighs 1.7 megabytes. (It’s probably heftier now, so you may want to look it up.) To make matters worse, most of the sites surveyed on HTTP Archive aren’t even responsive, but focus on one specific use case: the classic desktop computer with a large screen.

That’s awful news for responsive (and, ahem, responsible) designers who aim to support many types of devices with a single codebase, rather than focusing on one type. Truth be told, much of the flak responsive design has taken relates to the ballooning file sizes of responsive sites in the wild, like Oakley’s admittedly gorgeous Airbrake MX site, which originally launched with a whopping 80-megabyte file size (though it was later heavily optimized to be much more responsible), or the media-rich Disney homepage, which serves a 5-megabyte responsive site to any device.

Why are some responsive sites so big? Attempting to support every browser and device with a single codebase certainly can have an additive effect on file size—if we don’t take measures to prevent it. Responsive design’s very nature involves delivering code that’s ready to respond to conditions that may or may not occur, and delivering code only when and where it’s needed poses some tricky obstacles given our current tool set.

Fear not!

Responsible responsive designs are achievable even for the most complex and content-heavy sites, but they don’t happen on their own. Delivering fast responsive sites requires a deliberate focus on our delivery systems, because how we serve and apply our assets has an enormous impact on perceived and actual page-loading performance. In fact, how we deliver code matters more than how much our code weighs.

Delivering responsibly is hard, so this chapter will take a deep, practical dive into optimizing responsive assets for eventual delivery over the network. First, though, we’ll tour the anatomy of the loading and enhancement process to see how client-side code is requested, loaded, and rendered, and where performance and usability bottlenecks tend to happen.

Ready? Let’s take a quick look at the page-loading process.

A walk down the critical path

Understanding how browsers request and load page assets goes a long way in helping us to make responsible decisions about how we deliver code and speed up load times for our users. If you were to record the events that take place from the moment a page is requested to the moment that page is usable, you would have what’s known in the web performance community as the critical path. It’s our job as web developers to shorten that path as much as we can.

A simplified anatomy of a request

To kick off our tour de HTTP, let’s start with the foundation of everything that happens on the web: the exchange of data between a browser and a web server. Between the time when our user hits go and their site begins to load, an initial request pings back and forth from their browser to a local Domain Name Service (which translates the URL into an IP address used to find the host), or DNS, to the host server (fig 3.1).

Fig 3.1: The foundation of a web connection.

That’s the basic rundown for devices accessing the web over Wi-Fi (or an old-fashioned Ethernet cable). A device connected to a mobile network takes an extra step: the browser first sends the request to a local cell tower, which forwards the request to the DNS to start the browser-server loop. Even on a popular connection speed like 3G, that radio connection takes ages in computer terms. As a result, establishing a mobile connection to a remote server can lag behind Wi-Fi by two whole seconds or more (fig 3.2).

Fig 3.2: Mobile? First to the cell tower! Which takes two seconds on average over 3G.

Two seconds may not seem like a long time, but consider that users can spot—and are bothered by—performance delays as short as 300 milliseconds. That crucial two-second delay means the mobile web is inherently slower than its Wi-Fi counterpart.

Thankfully, modern LTE and 4G connections alleviate this pain dramatically, and they’re slowly growing in popularity throughout the world. We can’t rely on a connection to be fast, though, so it’s best to assume it won’t be. In either case, once a connection to the server is established, the requests for files can flow without tower connection delays.

Requests, requests, requests!

Say our browser requests an HTML file. As the browser receives chunks of that HTML file’s text from the server, it parses them procedurally, looking for references to external assets that must also be requested, and converts the HTML into a tree structure of HTML elements known as a Document Object Model, or DOM. Once that DOM structure is built, JavaScript methods can traverse and manipulate the elements in the document programmatically and CSS can visually style the elements however we like.

The complexities of HTML parsing (and its variations across browsers) could fill a book. Lest it be ours, I will be brief: the important thing is getting a grasp on the fundamental order of operations when a browser parses and renders HTML.

  • CSS, for example, works best when all styles relevant to the initial page layout are loaded and parsed before an HTML document is rendered visually on a screen.
  • In contrast, JavaScript behavior is often able to be applied to page elements after they’re loaded and rendered.

But both JavaScript and CSS present bumps on the critical path, blocking our page from showing while they load and execute. Let’s dig into this order of operations a bit.

Rendering and blocking

The quickest-to-load HTML document is one without extra external files, but it’s also not one you’ll commonly find. A typical HTML document references a slew of outside assets like CSS, JavaScript, fonts, and images.

You can often spot CSS and JavaScript in the HTML document’s head as link and script elements, respectively. By default, browsers wait to render a page’s content until these assets finish loading and parsing, a behavior known as blocking (fig 3.3). By contrast, images are a non-blocking asset, as the browser won’t wait for an image to load before rendering a page.

Fig 3.3: Blocking CSS and JavaScript requests during page load.

Despite its name, blocking rendering for CSS does help the user interface load consistently. If you load a page before its CSS is available, you’ll see an unstyled default page; when the CSS finishes loading and the browser applies it, the page content will reflow into the newly styled layout. This two-step process is called a flash of unstyled content, or FOUC, and it can be extremely jarring to users. So blocking page rendering until the CSS is ready is certainly desirable as long as the CSS loads in a short period of time—which isn’t always an easy goal to meet.

Blocking’s value with regard to JavaScript almost always undermines the user experience and is more a response to a lingering JavaScript method called document.write, used to inject HTML directly into the page at whatever location the browser happens to be parsing. It’s usually considered bad practice to use document.write now that better, more decoupled methods are available in JS, but document.write is still in use, particularly by scripts that embed advertisements. The biggest problem with document.write is that if it runs after a page finishes loading, it overwrites the entire document with the content it outputs. More like document.wrong, am I right? (I’m so sorry.) Unfortunately, a browser has no way of knowing whether a script it’s requesting contains a call to document.write, so the browser tends to play it safe and assume that it does. While blocking prevents a potential screen wipe, it also forces users to wait for scripts before they can access the page, even if the scripts wouldn’t have caused problems. Avoiding use of document.write is one important step we can take to address this issue in JavaScript.

In the next chapter, we’ll cover ways to load scripts that avoid this default blocking behavior and improve perceived performance as a result.

Kategorien: Webdesign

The best camera under 1,000 dollars: What to buy this holiday season!

Imaging Resource - Di, 25/11/2014 - 01:58
In all our years of covering the camera market (16+ and counting now), there’s never been a time like this! Competition between manufacturers and ever-advancing technology have brought combinations of price, quality and capability never before seen in the history of photography. It’s a great time to be a photographer! But what to buy? Not everything is universally wonderful; sometimes the pressure of competition leads to products pushed out the door a bit too quickly, or where just a few too many corners have been cut to meet a price point. That’s where we come in, with our unique,...
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Kategorien: Fotografie

The Absolute Best Black Friday Camera Deals of 2014 (UPDATED DAILY)

Imaging Resource - Di, 25/11/2014 - 00:11
We've searched the web for the best camera deals for Black Friday and distilled them to this one page. We'll keep this page live throughout the week with continuous updates as new camera deals and specials become available. Bookmark this link and check back often for the best Black Friday deals! (Please note that some deals listed below may not yet be active) UPDATES, Nov. 24, 6:15pm: Adorama: Pentax K-5 IIs body-only (+ Free AF-200 Flash until midnight TONIGHT) $496.95 (compare $996.95) Adorama Pre-Black Friday Canon DSLR &...
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Kategorien: Fotografie

Samsung 18-55mm III lens review: A decent entry-point to the NX mount, but will it satisfy enthusiasts?

Imaging Resource - Di, 25/11/2014 - 00:10
    The Samsung 18-55mm III f/3.5-5.6 OIS NX is the third iteration of Samsung's 18-55mm series kit lens. Looking at the technical specifications, it's hard to see any discernible difference between the version II and III lenses (though the version III lens appears to have packed on an additional six grams in weight, despite not having changed size). It offers a focal length range equivalent of around 28-85mm (in 35mm film terms). The Samsung 18-55mm III f/3.5-5.6 OIS NX is a light and compact zoom lens, weighing in at just 204 grams...
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Kategorien: Fotografie

Best camera under 1,000 dollars: Best compact camera

Imaging Resource - Di, 25/11/2014 - 00:00
The competition has really been heating up for high-end compact cameras lately. (We're defining "compact" cameras here as ones with fixed, non-interchangeable lenses.) Nowadays, larger and larger sensors are getting squeezed into surprisingly compact camera bodies. This type of camera offers photographers the higher image quality of larger cameras, while still maintaining much smaller body sizes compared to most interchangeable lens models. If want a camera that you can literally drop in a jacket pocket, but don't want to give up image quality to do so, read on; we've got a couple of great...
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Kategorien: Fotografie

Best camera under 1,000 dollars: Best mirrorless camera

Imaging Resource - Di, 25/11/2014 - 00:00
Is this "the year of mirrorless"? It might well be, with a literally unprecedented array of capable, affordable models available. While DSLRs still command the bulk of sales, mirrorless cameras' svelte size and excellent image quality are drawing more and more fans as time goes on. As we wrote in an article earlier this year, all of us at IR actually own and shoot with at least one of each type, and feel both have their place, but there's no denying that there are some really superb mirrorless cameras on the market, to be had at some incredible prices this holiday season! On the first...
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Kategorien: Fotografie

Maxima, revisited: Filmmaker’s 1996 Nissan returns to virality in a hilarious followup

Imaging Resource - Mo, 24/11/2014 - 23:43
    Now here's a fun story to perk up the end of your Monday! It was about a year ago when we told you about Luke Aker, an Orlando-based filmmaker who smartly promoted himself with a hilarious parody commercial featuring his very own 1996 Nissan Maxima GLE sedan, for sale at the time on Craigslist. We don't know if the video, which quickly went viral, scored Aker any extra work, but it certainly caught the attention of Nissan's marketing department, who quickly snapped up the car for US$1,400 plus a US$1,000 charitable...
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Kategorien: Fotografie

Sony announces updated 70-300mm A-mount lens; 16-35mm, 24-70mm updates in development, too

Imaging Resource - Mo, 24/11/2014 - 23:41
    Alongside the surprise launch of the Sony A7 II full-frame mirrorless camera last week, the company also had some good news for A-mount shooters: Three new lenses on the roadmap for their Alpha cameras. All three are replacements for existing models. The first of the three is due to ship next February in the Japanese market, while the others will follow in due course. The Sony 70-300mm F4.5-5.6 G SSM II lens (SAL70300G2) will be first to reach the market, priced at ¥142,000 (roughly equivalent to US$1,200). That's about 20%...
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Kategorien: Fotografie

What’s in a picture? Google algorithms attempt to describe real-world photos in plain English

Imaging Resource - Mo, 24/11/2014 - 22:37
    It's the holy grail of image databases, and it looks like Google might be getting closer to making a breakthrough. For years now, researchers have attempted to tackle the thorny task of creating an algorithm that can identify (and then describe) the contents of a photograph without user intervention. It's one of those tasks that is so easy for people that we almost don't think about it, and yet it turns out to be incredibly challenging for a computer. Consider the image below, courtesy of Google, for example. For most...
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Kategorien: Fotografie

Panasonic DMC-CM1 to go on sale in UK

Digital Photography Review - Mo, 24/11/2014 - 18:58

Panasonic has announced that its DMC-CM1 'compact camera with smartphone technology' will be sold in the UK. Originally the company had marked out France and Germany as the only countries to get the device, but citing 'high demand' it has included a limited number of UK stores to stock it. Read more

Kategorien: Fotografie

Blue Beanie Day 14: Toque ’em if You’ve Got ’em

A List Apart - Mo, 24/11/2014 - 14:30

On Sunday, November 30, web designers and developers across the globe will celebrate Blue Beanie Day 2014, wearing a blue beanie to show their support for web standards. Join in!

“What’s Blue Beanie Day,” you may ask? Well, it’s possible you’ve seen it in years past: a host of avatars on Twitter and Facebook, with selfies galore, each sporting a little blue toque. Here’s the thing: each is a tribute to the hat that launched a thousand sites: the blue beanie worn by A List Apart’s own Jeffrey Zeldman in that infamous selfie, and that eventually emblazoned the cover of Zeldman’s Designing With Web Standards.

But this isn’t a plug for a book, or for the man wearing the rather fetching hat: rather, sporting a blue chapeau is a reminder that web standards—standards like semantic markup, neatly separated styles, and DOM scripting—are responsible for much of the work we do today. In the pre-WaSP, pre-DWWS world, we were forced to build to the idiosycrasies of each broken desktop browser—could you imagine anything like responsive web design without web standards? It’s true: we face a lot of challenges as the web moves beyond the desktop. But as wild and woolly as this multi-device version of the web is, it’d be significantly more challenging without the solid web standards support we enjoy today.

So if web standards have made your life a little easier—and I know I couldn’t do my job without ’em—then upload a shot of yourself wearing a blue beanie, hat, or cap to any of these fine social media locations:

And there’s no need to wait until November 30: if you’ve got a beanie-enabled shot of yourself, then post away!

Kategorien: Webdesign

ADC-Wettbewerb 2015 gestartet

dasauge.de - Mo, 24/11/2014 - 11:34
ADC-Wettbewerb 2015 (Logo)

Der ADC-Wettbewerb 2015 kommt mit einigen Neuerungen wie dem Bereich „Out of any Box“. Teilnahmeschluss für Arbeiten und Kampagnen aus 2014 ist am 22. Januar.

Der Startschuss zum 51. ADC-Wettbewerb ist gefallen. Zu den Wettbewerbsbereichen Printmedien, Audiovisuelle Medien, Digitale Medien, Dialogmarketing/Promotion/Media, Branded Content/PR, Räumliche Inszenierung, Design, Editorial, Craft und Ganzheitliche Kommunikation kommt „Out of any Box“ hinzu. „Out of any Box“ Innerhalb dieser (Nicht-) Kategorie können Arbeiten eingereicht werden, die eine neue Dimension haben, die in keinen vorgefertigten „Kommunikationscontainer“ passen. „Wir möchten Arbeiten sehen…

weiterlesen…

Kategorien: Fotografie

Readers' Showcase: Portraits and People

Digital Photography Review - So, 23/11/2014 - 18:00

DPReview members are a talented group and we've been highlighting their photography in a series of readers' showcases. Recently we asked the Portrait & People Photography forum to share their favorite shots. They responded with excellent work both in and out of the studio, and we've picked a few of our favorites to share. See gallery

Kategorien: Fotografie

Flickr Wall Art expands to include Creative Commons images

Digital Photography Review - Sa, 22/11/2014 - 21:32

Flickr Wall Art now allows users to order prints from more than 50 million photographs, the service has announced. This follows Wall Art's arrival in October, and moves to include all applicable freely-licensed Creative Commons images, licensed artists images, and a curated selection of content from NASA. Read more

Kategorien: Fotografie

Behind the Shot: Clouds over Skagsanden

Digital Photography Review - Sa, 22/11/2014 - 14:00

In this article, nature photographer Erez Marom shares the story of his panoramic shot 'Clouds over Skagsanden', taken earlier this year in the Lofoten Islands in Arctic Norway. His article covers everything from preparing to shoot at the location, to the shoot itself through to final post-processing of the resulting image. Click through to read Erez Marom's article 'Behind the Shot: Clouds over Skagsanden'

Kategorien: Fotografie

Google Nexus 6 DxOMark Mobile Report

Digital Photography Review - Fr, 21/11/2014 - 22:35

The Nexus 6 is Google's showcase phone for Android 5.0 'Lollipop' and the first Nexus device made by Motorola. It comes with a dual-LED ring flash, a 13MP sensor with a fast F2.0 aperture, optical image stabilization and 4K video recording. DxOMark Mobile put the Nexus 6 through its image quality tests and has just published the results. Read more

Kategorien: Fotografie