Most cameras only perform a "quick format," which leaves your images recoverably intact. Whether you are protecting sensitive client data or trying to revive a glitchy card, sometimes you need a true secure wipe. Here is how to do it properly on a Mac — using tools you likely already have — without risking damage to the card.
UHS-I and UHS-II SD cards have been used in cameras now for several years. And you might have started seeing mentions of UHS-III. So what is it, and should you buy one?
The Sony a6700 has a single UHS-II slot, and picking the wrong card grays out its best video modes entirely. Here's which V90 and V60 SD cards actually unlock 4K120 and All-Intra recording, based on independent speed testing.
Deciphering the alphabet soup of memory card formats can be frustrating. Whether you are shooting basic JPEG photos or heavy 8K video, here is exactly what you need to know about the capacity limits, file systems, and camera compatibility of SD, SDHC, SDXC, and the new SDUC formats.
Formatting your SD cards is an essential step to keeping them healthy and the data on them safe. Want to make sure you format SD cards on your Mac the right way? Here's a step-by-step guide for formatting both SD and microSD cards on Mac using two free tools to make sure that the card is ready for use in your camera or device.
A newer, faster version of SD and microSD cards is on the way. They look like existing SD and microSD cards, although they're a lot faster. It might sound like you're getting a faster, better card, but you're almost certainly not (at least, not yet).
SD cards have a bunch of cryptic codes on them. The most important when choosing an SD card for your camera is the Video Speed Class. Here's what it means.
Confused about which SD card the Sony RX100 VII actually needs? Here's why U3/V30-rated SDXC cards of 64GB or larger are the sweet spot, why UHS-II cards are wasted money in this camera, and which cards to buy.
Staring at an online listing trying to decipher "V90," "A2," or "UHS-II"? You aren't alone. Memory card labels have gotten more confusing, not less — especially with the arrival of SD Express and the Nintendo Switch 2. Here is a plain-English breakdown of every cryptic code on the label to help you add the right card to your cart (and avoid the ones that might actually slow your gear down).
Not sure which SD card the Nikon Z50 needs? Here are practical, tested recommendations covering compatibility, speed class, and card sizes so you can stop researching specs and start shooting.
Confused by the a6500's manual and its cryptic memory card codes? Here are tested SD card picks that cover every one of the a6500's photo and video features, plus guidance on sizes and compatibility.
The Sony a6600 doesn't come with a memory card as standard. But you're going to need one before you start shooting. Here are my practical recommendations on which cards to get.
That sudden "card is write protected" error on your camera usually comes down to one tiny switch on the SD card's edge. Here's how to spot it, flip it, and what to do if flipping it doesn't fix the problem.
The SD Association puts out their own software for formatting SD and microSD cards and preparing them for use in your camera or device. It's simple to use and reliable. Here's my quick guide to using it.
Seeing A1 or A2 on your next microSD card and wondering if it will make your camera faster? The short answer is: No. While these ratings are a game-changer for the Nintendo Switch, Steam Deck, and smartphones, they work differently than the V-ratings photographers rely on. Here is the plain-English breakdown of what A-ratings actually do and which one you actually need for your device.
UHS-II cards look almost identical to UHS-I ones, but the pins on the back tell you everything. Here's how to spot the difference and know when the faster spec actually matters for your camera.
After independent speed tests of the top V90 UHS-II cards, a new leader has emerged. The updated SanDisk Extreme Pro (SDSDXDM) is the first card I've tested to genuinely hit the 300 MB/s write speed limit, setting a new benchmark for 2026."
My name is David Coleman, and this is my site. I take photos for a living. Seven continents. Dozens of countries. Up mountains. Underwater. And a bunch of places in between. I'm based in Washington, D.C.
This site is where I post practical photography help, tips, and troubleshooting.
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