How To: Test the sharpness of a lens
The resolution, or sharpness, of a lens is vital to creating and reproducing quality photographs. Watch as this video breaks down how to diagnose the sharpness of your SLR lenses.
The resolution, or sharpness, of a lens is vital to creating and reproducing quality photographs. Watch as this video breaks down how to diagnose the sharpness of your SLR lenses.
Take a paper: we need 60 rectangles (length-width ratio of 6:1) And fold in 4 equal parts.
PayPal is one of the most popular payment systems across the globe. It makes payments fast, easy, and secure, and with 250+ million users, it's not going anywhere. If you're new to the online service, one of the first things you should learn is how to add your bank account, credit card, or debit card to PayPal, and make your life easier when it comes to online payments and withdrawals.
Phishing is the easiest way to get your password stolen, as it only takes one mistake to log in to the wrong website. A convincing phishing site is key to a successful attempt, and tools to create them have become intuitive and more sophisticated. SocialFish allows a hacker to create a persuasive phishing page for nearly any website, offering a web interface with an Android app for remote control.
Twitter's official iOS app is adequate if you're not much of a tweeter, but if you are, there's a lot of useful features that are missing. Luckily, there are plenty of free Twitter clients available that you can use on your iPhone. These third-party apps have features such as customizable interfaces, post scheduling, and different browser options for opening links, to name just a few.
QR codes have become a staple in our everyday lives. Companies use them for everything from marketing promotions to movie tickets thanks to security they provided for these types of transactions. But for years, Android users had to download an app to scan these codes. Well, not anymore.
After months of beta testing, Siri Shortcuts has finally arrived on all iPhones that support iOS 12. Anyone familiar with Workflow will understand how useful it is to set custom Siri commands for your favorite apps. Of course, your favorite apps need to be compatible with Shortcuts in order to take advantage of the new feature.
As you're surely aware, your phone can be used against you. Thanks to our cameras and microphones, a clever hacker can obtain access to your device and invade your privacy. But spying isn't limited to just these two sensors — gyroscopes, proximity sensors, QR codes, and even ads can be used to paint a very clear picture about who you are and what you're currently doing.
Your Instagram bio could always be used to link to other websites or profiles or just to show off your witty personality. Now, you also have the ability to use this section to tag other Instagram accounts as well as add tappable hashtags. Whether you want to link out to your best friend, company, or the latest trend in your city — if it has a profile name or tag, it can be in your bio.
The internet is chock-full of fun and interesting content, but there's only so much time in the day for consuming it. That's when saving webpages for later comes in handy. If you don't want your bookmarks and favorites folders to clutter up fast, consider using the "Reading List" feature built right in Safari on your iPhone.
Instagram Direct is fast becoming the end-all-be-all messaging app, and it just added some incredibly convenient features that should make it a bit more practical. These new additions have a clear purpose: To help Instagram Direct grow its base and take on more feature-rich messengers like Snapchat or WhatsApp.
As if being pregnant did not come with enough worry, a new study found that certain antibiotics are linked to an increased risk of spontaneous abortion, or miscarriage — a terrifying finding for any expectant mother.
Last month, Google introduced the Family Link app. This app, much needed in a world where the average age of kids first getting a smartphone is just over 10 years old, allows parents to set some limits on their children's phone usage. However, the app premiered with one caveat: Both the parent and the child had to have an Android phone. Now, Google has updated the app so it works on iOS devices.
Mobile gaming is a huge industry that raked in more than $91 billion in revenue in 2016, and of course, all of the major players get most of the glory. But smaller, independent game developers make some of the most fun and unique games out there — it's just harder to find their stuff because they don't have the promotional budget of studios like Rovio and Gameloft.
When you want to read product reviews, you go to Amazon—regardless of whether or not you intend on buying the product from their website. By the same sense, when you want to read discussions about certain topics you come across on the internet, there's no better place than Reddit.
Welcome to the final tutorial of the series on standard C. This article will cover the linked list abstract data type (ADT). There will be a lot of abstraction to try to deliver the understanding in the most basic way for easiest interpretation of what they are and how they work, then we will get into the guts of it and learn the technical code underneath. For those who have yet to grasp the concept of pointers, it's advisable that you do that first before approaching this. Having learned thi...
Hello, *Note This is my first how to post on here, so please correct anything that I have missed and let me know if anything I explained is unclear and I will try to clearify. Also I am a NOOB when it comes to this art, so I might have missed something, if so please inform me so I can better myself*
If you want to watch a movie on Netflix with a friend, family member, or significant other, but can't meet up in the same living room, the next best thing is doing it remotely from the comfort of your own homes.
Google's Chromecast has been out for almost two years, and I can safely say it has changed the way I use my TV. At first it was a hassle to even get local media to play on it, but now casting has branched out to torrent streaming, which was a real game changer. Unfortunately, most apps only let you stream one video or song at a time, or you can't add magnet links or torrents to a playlist of local content.
Notes on iOS has never been a particularly great app due to a lack of overall features compared to other note-taking apps like Evernote or Microsoft OneNote.
While the app switcher in iOS makes it easy to go from one open app to another fairly quickly, it's still not a great option if all you want to do is return to the previous app you were in.
Ad blocking on Android usually requires root access, but a pair of new browsers based on the open source Chromium and Firefox builds are looking to change this.
Smartphones don't generally play nice with tripods, so videos taken with our handheld devices make terrible source material for time-lapse photography.
Apple's iOS 8 ushered in a new way of typing with the addition of third-party keyboard compatibility. We've seen everything from keyboards with swipe gestures, customizable themes, different sizes, and even embedded GIFs. Now we've got one for all of you music lovers called AudioShot, which allows for easy sharing of music directly from the keyboard.
Cards Against Humanity is a popular party game with good old-fashioned raunchy adult themes that go quite well with a few alcoholic beverages. Up until now, though, you had to either print out a set of cards or order the official deck to play—unless, of course, all players happened to have devices that sported the same operating system.
Spam emails are emails that are sent to you without your permission. They can quickly fill up your email account if you don't do anything about it. Each email server deals with spam in a different way. Gmail is good at separating the spam for you so that you can get rid of it more quickly. It is easy to delete the spam and if you want to take it a little farther, you can get some of the spam to stop coming all together.
There has been much talk about how unsecure the cloud is because of PRISM’s newfound ability to demand all of your data without any resistance. This has spin doctors in the Cloud Storage industry losing their mind. They suddenly went from a central hub for 10GB of your files, to an easy window for Big Brother to track you through. Centralized cloud storage is no longer a safe way to keep your files, but we still need a way to access our files anywhere we go.
If your facebook account was hacked by someone and you really want it back this tutorial would help you get it back.
It only takes a minute for something well intentioned to turn into something sinister. Facebook created 'memorial pages' as way for friends and family to share their thoughts and feelings for those that are no longer with us.
When I heard that Google finally released a maps app for Apple's iOS 6, I almost cried. After upgrading to iOS 6 from iOS 5.1 on my iPhone 4, I was sad to realize that Apple Maps was the new default map app. I don't even have to explain why having Apple Maps as the native mapping program was a terrible terrible thing.
You may have heard those cool effects artists like Axwell, Ingrosso, Guetta, Antillas and many others use in their songs, the "pumping effect" on the Lead Synths or the vocals, like fading in and out.
The Windows 8 Developer Preview is out, and judging by the system requirements, Windows 8 can run on a whole range of devices. Try running Windows 8 on your netbook with this tutorial. Pick a Windows 8 version below and watch this guide for instructions on how to install it!
Mozilla Firefox is one of the Big Three web browsers, beloved for it's open nature and lack of affiliation with Microsoft or Google. Firefox 4 has been in a rather cranky Beta for some time, but has finally reached Release Candidate (RC) status! Watch this video for a guide to the new features you can play with in the RC, then click the link below to download it.
Need to print something but you're on the go and only have your smartphone or iPad with you? No worries! This tutorial shows you how to use a little app called Dropbox to print to your home printer anywhere, anytime, with any mobile device. Print THAT!
In this clip, you'll learn how to post a reply link to another Tweet on Twitter. What do President Obama, the Dalai Lama and Justin Bieber have in common? Why, they're all on Twitter, of course. Join the party. Whether you're new to Twitter's popular microblogging application or just missed a few of the essentials along the way, you're sure to benefit from this free video tutorial.
What do President Obama, the Dalai Lama and Justin Bieber have in common? Why, they're all on Twitter, of course. Join the party. Whether you're new to Twitter's popular microblogging application or just missed a few of the essentials along the way, you're sure to benefit from this free video tutorial, which offers instructions on how to use URL shorteners to shrink links to Twitter-friendly sizes.
In this clip, learn how to go into your iPhone photo library and find out where your photos were actually taken. This is a cool feature that will allow you to keep track of where you go on your travels and jog your memory if you can't remember.
In this tutorial, learn how to use your Facebook Fan Page to comment and write on other people's walls like you would a personal account. Your fan page is linked to your personal page, and sometimes you don't want to use your real identity to write messages. Check out this clip and get the hang of a FB glitch that will allow you to "tag" your friends so you can write on their walls.
To celebrate 30 years of Pacman, Google released a playable version of the classic game. This game was only available on Google for a couple of days, however. If you would like to play Google Pacman as often as you like, for as long as you like, check out this tutorial. In it, you will learn exactly where to go on the web to download this fun game.
Isn't it annoying when you sit down at a public computer and all of your favorite sites are blocked with a filter? You can use proxies to get around these blocks, but those don't always work.