Carte mémoire SD pour appareil photo : comment choisir ?

The memory card is absolutely critical for shooting—it’s second only to the camera lens in importance. If you are looking for an SD memory card for a camera but don’t know how to choose, you have found the right post. In this guide, you’ll learn everything you need to know before buying a new SD card. Now, let’s learn how to choose!

What does the Number of SD Memory Card for Camera Mean?

Before you pick an SD card, I think you should know what those codes, letters, and numbers actually represent. Let’s begin by breaking down those mysterious numbers and symbols you see on SD cards.

GB

The number markings on the SD card describe its capacity, speed, and performance level. As you know, the GB means the storage size of the card. The sizes like 32GB, 128GB, 256GB, 512GB are the most common. Is it the larger of the SD Memory Cards the better? Yes, the 256GB SD memory card stores nearly up to twice as many pictures as a 128GB. But you should know, the larger the storage size, the higher the price.

U + number

Le Class 10, U1, U3 on sd memory card for camera means the minimum writing speed. The Tu in U3 means UHS, which stands for Ultra High Speed. What do these speeds mean?

UHS-I

Contrary to U3, UHS-I means the maximum potential speed of the card’s electronic interface. You can think of it as the maximum width of the highway connecting the card to your device (like a camera or computer).

It dictates the maximum theoretical speed at which data can be transferred across that connection, which is typically 104 megabytes per second (MB/s). This maximum speed is primarily relevant for fast burst photos or large file transfers from the card to your computer.

V+number

Pour V+number comme V30, V60, V90, it means the video speed class. Higher numbers support smoother, higher-resolution videos.

Like the U-Class and C-Class ratings, the number following the V indicates the Minimum Sustained Write Speed dans MB/s (Megabytes per second). This is the lowest speed the card is guaranteed to maintain continuously, which is vital for preventing dropped frames during video capture.

A1, A2

A1 and A2 mean the Application Performance Class standards. It is found mainly on microSD cards and shows how well the card handles app-level tasks, such as storing and running mobile applications.

The A1 means a minimum of 1500 random read operations per second (IOPS) and 500 random write IOPS, while maintaining a sustained sequential write speed of 10 MB/s. The newer A2 significantly improves this performance by requiring 4000 random read IOPS and 2000 random write IOPS, also with a 10 MB/s sequential minimum.

How Do I Know What SD Card to Buy for My Camera?

Choosing the right SD memory card for camera depends on both your camera model and your shooting style. Follow the next steps to see which SD card is suitable for your camera.

Check Your Camera’s Compatibility

Look at your camera manual or the manufacturer’s website to find out which card standards it supports. Specifically, you need to know whether the camera uses SD, SDHC, or SDXC cards. Besides, you also need to confirm whether it can take advantage of the faster UHS-I or the ultra-fast UHS-II bus interface standards. The camera’s compatibility will limit your card’s performance. So that you can use the highest function of your card without wasting your cost.

Match The Speed To Your Needs

You should choose a card whose speed is sufficient for your intended use to avoid recording issues. For casual photography or shooting full HD 1080p video, cards rated Class 10 or U1 are usually fine. If you need to shoot 4K video or use your camera’s high-speed burst shooting mode, U3 or V30 (Video Speed Class) and above are highly recommended. For professional 4K or 8K video production, the fastest cards, V60 or V90, are necessary.

Choose A Suitable Capacity And Brand

More capacity means fewer card swaps, which is especially important during long shooting sessions. Cards with 128GB or 256GB capacities are a great choice for most photographers.

What’s more, choosing a reliable one is necessary. Reliable brands ensure your work is saved. I bought an unnamed SD card last year. My picture and video were lost! That is a disaster! Therefore, when you choose, remember to pick a trusted brand and buy from official or certified retailers, like Banggood.

Best Memory Card for Camera

Le BlitzWolf BW-TF4 SD memory card for camera is ideal for photographers and videographers. It balances speed, durability, and value for modern cameras.

BlitzWolf designed the BW-TF4 memory card for both high performance and reliability. The card is available in a variety of capacities, including 64GB, 128GB, 256GB, and 512GB. It supports multiple speed classes: Class 10, UHS-I, A2, and V30. The card is made of durable COB material and is available in red with a black adapter.

The card features its high performance. Read speeds reach up to 180MB/s. Write speeds are equally blazing, up to 90MB/s for the 64GB and 128GB versions, and up to 150MB/s for the larger 256GB and 512GB versions. The V30 video class ensures the minimum write speed required for smooth 4K video recording, while the A2 performance class optimizes the card for efficient application workflows.

The card is extremely durable and operates in a wide temperature range of 0 to 70 degrees Celsius. It can be safely stored in temperatures between -25 and 85 degrees Celsius. A BW-TF4 SD memory card for camera converter is included. High-speed transfer speeds and a rugged construction ensure reliable operation even in extreme conditions. If you’re looking for an affordable, high-performance camera memory card, the BW-TF4 is your best choice.