Have you ever wondered what the button next to the lens mount on your DSLR is for? Not the one that you use to detach a lens, but that other one? That’s the depth of field preview button. Let’s dig in. Depth of Field Redux The depth of field of an image is how much of it is in focus. An image with a shallow depth of field, like this one, has very little except the subject in focus....

The viewfinder is the bit you look through on your camera when you’re taking a picture. There are two main kinds: optical viewfinders and electronic viewfinders, although live view screens are also used. Let’s look at the differences between them. Optical vs. Electronic Viewfinders DSLRs have an optical viewfinder. It’s what makes them a DSLR. The “SLR” bit of their name means “single lens reflex” and is the mechanism by which light is directed from the lens to the viewfinder using mirrors and a prism....

Now that Windows 11 is here, you might be wondering how long you can keep using Windows 10 safely with continued security updates from Microsoft. We have the answer. Desktop Windows 10 Support Ends October 2025 According to Microsoft’s lifecycle website, the company will officially support Windows 10 Home, Windows 10 Pro, Windows 10 Enterprise, and Windows 10 Education editions until October 14, 2025. At that point, all regular desktop editions of Windows 10 will reach end-of-life status, which means that they’ll no longer receive security updates from Microsoft....

Old game consoles are great. Not just because there are plenty of old games that are still worth playing, but because the simpler electronic designs of cartridge-based systems tend to be much more resistant to wear and tear than modern disc-based consoles, plenty of them are still around and in great working condition. So why does your old Super NES or Sega Genesis look like junk on your brand new HDTV?...

In Bitcoin‘s early days, you could easily mine the cryptocurrency on your own PC. But now you need cheap electricity and a serious investment in specialized hardware to have any hope of making money. It’s impossible to make money mining Bitcoin on your computer, even if you have a decent graphics processor (GPU) optimized for gaming. Anything that promises to mine Bitcoin with your CPU is a scam, as it won’t even be worth the cost of electricity....

What’s So Special About Flight Sim on Xbox? Microsoft Flight Simulator has never graced a console before. Simulation games are normally a mainstay of the PC gaming scene, so the arrival of Flight Sim on Xbox marks something of a turning point for console gaming. A massive amount of optimization was required to make this happen, but the game looks fantastic and runs at its 30-frames-per-second target most of the time....

HowLongToBeat Getting a rough idea of how much playtime a certain game will have can be important for a few reasons. Some people want an open-world game that will last for more than 150 hours or it’s just not worth the $60. Others are looking for a few dozen hours to kill before they get bored. Whatever you’re looking for, a good website for getting an idea of how long a game will last is HowLongToBeat....

What’s an Energy Vampire? If you’re a fan of pop psychology articles or the quirky vampire-centered mockumentary What We Do in the Shadows, you might associate the term “energy vampire” with people who, metaphorically or literally, drain your energy. In terms of electrical usage and the impact on your electric bill, however, the term “energy vampire” refers to any device that carries a phantom, or standby, load when not in active use....

Mobile carriers like AT&T and Verizon rarely raise prices on existing phone plans, but it does happen from time to time. AT&T is now raising the monthly cost on select legacy plans, in an effort to push people to newer services. Bloomberg first reported on Tuesday that AT&T is raising prices on select older plans by up to $6 per month for single-line customers, and up to $12 per month for families....

It’s common knowledge that running the air conditioning in your vehicle has a negative impact on MPG. That’s why it’s better to open the windows at certain speeds. People don’t typically think of charging electronics in the same way, but should we? RELATED: Which Uses More Gas: Open Windows or AC? Where Does the Power Come From? Whether your car runs on gasoline or electricity, you should think of it as a giant battery with finite energy....

Fitness App Now Included With iOS 16 In iOS 15 and earlier, the iPhone Fitness app was limited only to Apple Watch owners. This is changing in iOS 16, with the Fitness app now available to all iPhone users regardless of whether they have a wearable or not. The app will allow iPhone users to track activity much like Apple Watch owners already do, with a Move ring to fill with active energy burned....

It’s all too easy to fill your iPhone’s storage to the brim with apps, photos, and video, but just because you can doesn’t mean you should. How full is too full? We put our iOS devices through the paces to get to the bottom of things. RELATED: How Much Free Space Should You Leave on Your Windows PC? Recently, we tackled the topic of how much free space your should leave on your Windows PC, but these days storage constraints on mobile devices are the pinch people feel more acutely....

Keeping your data organized in your Microsoft Excel spreadsheets is important. One way of doing that is by alphabetizing your data, in either ascending or descending order. We’ll show you how to do this in both rows and columns. RELATED: How to Alphabetize Lists and Tables in Microsoft Word How to Alphabetize a Column in Microsoft Excel To sort data A to Z (descending) or Z to A (ascending) in a column, use Excel’s quick sort option....

Internet cookies have been around since the beginning of the web, and for the most part they serve a useful purpose. But while most cookies are fairly innocuous, and even necessary, some are not. We’re talking of course, about third-party cookies, and if you don’t know how to block them on your preferred web browsers, then get ready to learn. Why Would You Want to Do This? Most cookies exist for the sake of persistence....

Your iPhone automatically sets the appropriate time zone using your location, but if you want, you can manually change the time zone by entering your city’s name. Here’s how to do that. RELATED: How to Change the Snooze Time on iPhone Manually Set the Time Zone on iPhone To manually specify a time zone, you’ll first disable the automatic date and time option on your iPhone. To do so, first, launch the Settings app on your phone....

For security reasons, you should change your account passwords periodically, and Macs are no exception. Fortunately, you can change your password on a Mac with just a few clicks, as you’re about to find out. While changing your password, make sure that you use one that’s long and unique. Your Mac’s login password isn’t the same as your Apple ID, so we suggest that you don’t reuse the password here....

We’re all used to installing the latest iOS update on our iPhones, but Apple’s new HomePod speaker doesn’t have a screen to show you a red dot. How do you know what HomePod version you’re on? And how do you update it? The HomePod Updates Itself Automatically Here’s the good news: your HomePod doesn’t really need to be updated, at least not manually. It’s going to keep itself updated as long as it’s plugged in and turned on....

iOS includes several useful tools for displaying how much battery life your iPhone has left, as well as which apps are consuming the most of your battery. However, none of these tools actually tell you anything about your battery’s long-term health, which is just as important. Battery Health vs. Battery Life Battery health is different than battery life. Battery life determines how long your battery lasts on a single charge, but your battery health determines how much your battery life diminishes over time....

Create surveys or to-do lists inside of your Google Docs or Slides file with checklists. With this easy workaround, you’ll be able to insert a simple checklist into your document for others to fill out. Here’s how. For this guide, we’ll be using Google Docs for the entirety of our examples. However, either method can be used for Google Slides as well. Fire up your browser, head over to Google Docs or Slides, and open up a document....

Google Docs is well-known for being a comprehensive text editor, but it also provides some basic, built-in drawing tools that allow users to create basic designs in their documents and give them that special touch. How to Draw on a Google Doc Accessing Google Docs’ drawing feature isn’t as obvious as, say, Microsoft PowerPoint’s, which has all of the drawing tools in the ribbon. To access Google Doc’s drawing tools, click “Insert” on the menu bar, hover your cursor over “Drawing” in the drop-down menu, and then click “New” in the sub-menu....