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How not to lose the most interesting part of the recorded video due to the wrong choice of memory card? How to choose a memory card for the SJCAM action camera What size of memory card to choose

For action cameras which one to choose? - One of the most frequently asked questions when purchasing your first action camera from our customers. But many users neglect this issue and end up with a number of problems related to the operation of the action camera and the safety of materials on the card itself.

Therefore, in our new review, we will provide answers to the most popular questions:

Why should you choose a memory card for an action camera carefully?
How to correctly correlate camera capabilities and memory card parameters?
What do the symbols and meanings on the packaging of memory cards mean?
What speed should a memory card have to work with an action camera?
What size memory card will be optimal for shooting in Full HD and 4K resolution?
How to correctly and competently buy and check a memory card for compatibility with an action camera before purchasing it in a store?
What memory cards and models should you buy for your action camera in 2018?

If you don’t have much time, we strongly recommend that you pay attention to the key time periods of the video:

00:20 - What problems can a memory card cause in the operation of an action camera?

02:38 - Basic symbols on memory card packaging

06:14 - What class of memory card is suitable for an action camera

06:50 - Let's talk about data transfer speeds in memory cards

06:03 - Which class “UHS-1/UHS-2” card to choose for an action camera

12:10 - What size memory card to choose for an action camera

14:56 - How to check a memory card for an action camera before buying it in a store

18:19 - Which memory card manufacturers should you choose to use in an action camera?

We strongly recommend that you be careful when selecting a memory card to use with your action camera. As practice shows, this is not as simple a process as it might initially seem. In addition, a memory card that is too slow can easily cause recording errors, put the camera into freezing mode, and also have a negative impact on processor overheating.

And it simply simply won’t save the photos and videos you recorded. Is saving $5-20 worth all the videos and photos you take while on vacation? - Few people would disagree with such an obvious question. From our experience, about 70% of all problems in the operation of action cameras from GoPro, Xiaomi Yi, SJCam, Sony and other manufacturers are caused by incorrectly selected memory cards. We are very careful in selecting memory cards for each of our clients, so we strongly recommend that you take a look at our catalog of memory cards for action cameras and quadcopters from leading manufacturers.

We are always happy to help you with your choice and answer all your questions. You can buy a memory card for an action camera right now

Today we will talk about memory cards for DVRs and action cameras. I think you know that not every memory card will work correctly in your recorder. How to choose the right memory card? What should you pay attention to when choosing a memory card and which models/brands should you recommend?

Why not just any card will do?

Modern DVRs record with HD/FullHD/QHD resolution, and every year there is a growing trend in the number of pixels. But, in addition to resolution, there is also bitrate. This is the speed of the stream being written to the memory card, depending on the model, even with the same resolution, this parameter can change quite a lot. The DVR manufacturer often writes in the instructions - support for MicroSD memory cards (the most popular format) up to 32/64/128/256GB 10th grade. But he usually doesn't write anything about the bitrate of his stream. You can find out these numbers only by looking at the technical information of the recorded video or the profile forum thread of the selected gadget model.

How to choose a memory card

Without going into the technical details of memory chips (MLC NAND is better) and specifications, pay attention to the 2 main characteristics of the card indicated right on it. This is the speed class (class 10) and UHS parameter (U1 or U3).

If you have:

2 channel device
1 channel device with average recording bitrate
device with QHD (2k) resolution

Then regular class 10 memory cards will still suit you With index U1 and recording speed from 18 to 22 mb/s. It should be taken into account that a class 10 card provides a minimum speed of 10mb/s, and this may not be enough in most modern DVRs. Therefore, you shouldn’t just navigate by class. Don't look at loud labels on memory card packaging. Usually the speed indicated there is not write speed, but read speed. What is important to us is writing; as a rule, this characteristic is much more modest than reading, so marketers try to hide it. If you have:

4k action camera/dvr
DVR with QHD resolution for 2 cameras
device with very high bitrate recording

Most likely you will need a class 10 memory card with index U3. It provides minimal recording at speeds up to 30mb/s. In some cases, this will not be enough, so for 4k with a bitrate of more than 70-100mbit/s, we recommend top-end (or pre-top) cards with the U3 index in the line of various brands, where the recording speed is from 50mb/s.

How to find out the WRITE speed on a memory card?

Only experimentally through special programs. Before purchasing, you need to look for tests on the Internet for the memory card you have chosen and see the writing speed. Or you can test the memory card yourself using the CrystalDiskMark program. Please note that many cards show maximum writing speed only if you have a card reader that supports USB3.0; your USB port in your laptop or computer should be the same. The computer must not be performing any other tasks during testing.

More programs

Mydisktest - a program for testing USB Flash media for bad areas
Panasonic SD formatter - heals and restores almost any flash drive for mobile devices and not only
Check Flash - designed to check the performance of flash drives, and also allows you to use tests to determine the instant read/write speed

How to format a memory card

Attention, like all manufacturers in their instructions, we recommend formatting any memory card once every 2 months at least if you want to extend its life. This can be done either with the built-in tools of the camera or recorder, or on your computer. Never format an Sdxc type memory card (often with a capacity of 64gb or more) in devices that support the Sdhc type. Your card reader or adapter must be able to work with Sdxc.

You can use a special program for PC or MAC called SD Card Formatter. Set the options in the settings as shown in the figure on the right.

The best memory card for a DVR

Unfortunately, not all memory cards, even from famous brands, are so reliable. Recommended brands to check out include:: Sony, Toshiba, Lexar, Transcend, Samsung, Pny.

Finally, let's see a list of specific memory cards that we recommend for purchase and use.

You will find the TOP 5 most popular memory cards in our other article.

In the regular recording segment from 15 to 22 mbit/s index U1

transcend premium 300x 16/32/64
transcend premium 400x 16/32/64/128
transcend high endurance U1 16/32/64
transcend ultimate 600x 8/16/32
toshiba exceria U1 16/32/64/128
lexar high endurance U1 16/32/64
Lexar 300x U1 16/32/64
Lexar 600x U1 16/32/64/128
Sony SR-UY3A U1 16/32/64/128
samsung evo U1 16/32/64/128

In the segment of increased bitrate up to 50m mbit/s index U3

Sony SR-UX2A u3 16/32/64/128
toshiba exceria U3 32/64
transcend ultimate U3M 16/32/64/128
samsung pro U3 16/32/64
samsung evo+ U3 32/64/128/256
viofo U3 32/64
transcend USD300S 16/32/64/128
transcend C10V High Endurance 16/32/64/128
viofo Professional High Endurance

In the high bitrate segment from 80 mbit/s of the U3 index

transcend ultimate 633x U3 32/64
toshiba exceria PRO U3 32/64
lexar professional 1000x 32/64/126/256
lexar professional 1800x 32/64/128
samsung pro+ U3 32/64/128
viofo U3 32/64
transcend USD500S 16/32/64/128

For 4k action cameras Cards from Sandisk or Kingston with the U3 index may be suitable, v30, A1. They work for quite a long time, since action cameras do not record continuously.

Guarantee

You've probably seen that many memory card manufacturers provide a long warranty period, from 3 to 5 or more years. And even a lifetime warranty. Unfortunately, this warranty comes with limitations, usually stated in the fine print of the terms and conditions, and certainly does not apply to devices with frequent data overwriting, such as action cameras and dash cams. Therefore, do not rely on full warranty service when used in recorders. For example, here is a screenshot of the warranty terms Samsung cards using one example:

conclusions

Be careful when choosing a memory card for your gadget; do not buy unknown Chinese brands on Aliexpress for use in a DVR or action camera; they are suitable for simpler devices such as a smartphone or player.

If you definitely want to take a good card, choose one with nand MLC or SLC flash memory type. This type of memory allows you to rewrite cells 2-2.5 times larger than conventional TLC chips.

Our kit always supplies only branded cards from well-known manufacturers with the speed required for your device.

There may be two reasons why you decided to read this article: either your action camera did not come with a memory card, or the existing one does not have enough memory, or it is incompatible. It turns out that not all memory cards are equally suitable for most action cameras. Most often the reason is low data transfer speed. If you shoot video in FullHD, then there are no problems. But if you bought yourself a camera with 4K resolution, this is where compatibility errors arise. Cards differ primarily in the speed of writing and reading information. When we write a video in very high resolution, our bitrate value (the amount of information per unit of time) rises, and if the media is not capable of recording it so quickly, then an error occurs due to data overflow. High-speed cards that solve this problem tend to cost significantly more than their predecessors. Plus, marketing markups for the brand get mixed into this mess. The cards can be absolutely identical in all respects, and due to the fact that this brand is twice as old as another, the price tag will also double. People's thinking is designed to trust higher prices in the hope of not being cheap. Since you are buying a top-end high-speed card, do it from trusted sellers, because now they are very fond of counterfeiting brands such as Transcend, Kingston, SanDisk. Don’t rush to buy top options right away; you may not need them. This way you will only waste your money by gaining unnecessary excess potential.

Now let's take a closer look at what was discussed above. For cameras that do not record 4K video, there is no point in buying media larger than 32 GB. The optimal size is 16-32 GB. Such cards are suitable for cameras SJ6 Legend, SJ 360, SJ 4000Wi-Fi, SJ 5000, SJ M10, SJ M20 and all derivative models with index +. If you install a larger card, again it may not work or throw up surprises when writing/reading. By the way, our store has already received such complaints about non-working cameras, but as it turned out, they were equipped with a voluminous 64 GB MicroSD and the camera equipment itself is not designed for such numbers.

The micro-sized memory cards we are interested in come in three types: SD, SDHC, SDXC. These set-top boxes were not invented without reason and characterize individual compatibility with the gadget (responsible for formatting, writing and reading) and the amount of writable memory. For example, SD supports up to 4 GB, SDHC - up to 32 GB, and SDXC - over 32 GB. The speed of the console has nothing to do with it. More detailed information Compatibility with a specific action camera can be found on the SJCAM box or in the passport, and if this is not possible, then always give preference to micro SDHC.

Let's talk about the drive class. Usually this information is indicated by the numbers 2, 4, 6, 10 in a circle and appears immediately after the volume in GB. This is specifically the recording speed in megabytes per second and our bitrate should not be higher than this figure. For example, a class 10 card has a speed of 10 MB/s = 8 * 10 Mbit/s = 80 Mbit/s. If you see the number 3 on the package (there are no other numbers except 1 or 3) in the shape of a square glass, then multiply the available recording speed by 3 = 240 Mbit/s. Sometimes there are still cards with the useless UHS-1 or UHS-2 index. The second has a higher transmission speed due to an additional row of contacts (see picture below). Only now there are very few ports in which this advantage will work. The situation is reminiscent of the use (or rather the lack thereof) of USB ports of the 2.0 and 3.0 standards. Speed benefits will only be achieved when using two pins with a blue connector.

I would like to finish the article with the following list, which the SJCAM company published on its website. All of them have been tested and there will certainly be no problems.

Silicon Power Micro SDXC 64GB Class 10

Sandisk Extreme Pro 64GB

Sandisk Extreme PLUS 64GB UHS-3

Other action cameras:

Samsung EVO Class-10 32GB

Sandisk Extreme Class-10 32GB

Lexar EVO Class-10 32GB

Transcend Premium 300 Class-10 32GB

Stronium Class-10 32GB

Sony Class-10 32GB

Kingston Class-1016GB

Samsung EVO 16GB SDHC

Sony Micro SDXC Class 10 UHS-1 16GB

Every owner of a digital camera or smartphone with a camera sooner or later thinks about buying a memory card. Even if the device already has several gigabytes of built-in memory, to save photos and videos you will need a large-capacity flash drive with high writing speed. It may seem that all cards are the same, but there are many pitfalls in this topic. We will tell you how to choose best map memory.

MEMORY CARD TYPE

There are several types of memory cards on the market today. The one listed in the description of your device will suit you. For example, most cameras today are compatible with SD (Secure Digital) memory cards, which have two subtypes: SDHC (high-capacity cards) and SDXC (ultra-high-capacity cards). Cameras released several years ago may not be compatible with SDXC memory cards, and digital camera models released before 2006 may not be compatible with SDHC memory cards.

The maximum capacity for SDHC is 64 GB, and for SDXC - 512 GB.

Some professional cameras, as well as cameras from previous years, widely use CF (Compact Flash) flash drives. Today they are not much superior in their characteristics to other types, but they are the leaders in recording volume and speed. However, before purchasing a fast CF memory card, make sure that your camera can support such high data transfer speeds. In particular, there must be support for the UDMA (direct memory access) function on the camera side.

There are also CFast 2.0 memory cards with ultra-high read (up to 515 MB/s) and write (up to 440 MB/s) speeds. Their maximum volume is 128 GB, minimum is 64 GB. It's comparative new format, which is supported by several professional cameras. But it is already clear that due to its high speed characteristics it will be in demand in the future.

Canon EOS-1D X Mark II / EF100-400mm f/4.5-5.6L IS II USM SETTINGS: ISO 1000, F6.3, 1/1000 s

In tablets and smartphones, where compactness is especially important, along with regular SD cards, their smaller versions - microSD - can be used. They are often used in action cameras and some pocket cameras. Today, microSD cards are in no way inferior to their full-size counterparts - neither speed nor capacity. They can also be used in cameras with a standard SD slot via an adapter. The maximum microSD memory capacity is 200 GB on the SanDisk Ultra microSDHC/microSDXC UHS-I model. You can read more about microSD memory cards on the pages of our magazine.

MEMORY CARD STANDARD UHS-I and UHS-II

Today, memory cards of the UHS-II standard are being actively introduced. Fujifilm X-T1, Fujifilm X-Pro2 and Olympus OM-D E-M5 Mark II already work with them. The file writing speed reaches 250 MB/s, and the reading speed is 280 MB/s. Such high performance allows us to realize all the capabilities of modern technology. Externally, flash drives of the old and new standards are no different, but this is only from the front side. On the back of UHS-II cards, the contacts are arranged in two rows. But most importantly, UHS-II is backward compatible: they can be used in photo and video cameras that do not support this standard. It is obvious that the future is theirs.

Some photographic equipment manufacturers have tried to introduce their own types of flash drives. But on this moment Almost all camera models are compatible with one of the types described above, and either a separate or combined slot is provided for using your own types of flash drives.

WHAT CAPACITY OF MEMORY CARD SHOULD I CHOOSE?

The capacity of the memory card determines how many pictures or minutes of video you can record. Naturally, more capacious cards are more expensive. But we live in the age of multi-megapixel cameras and the coming era of 4K video. SLR cameras have crossed the 50 megapixel mark, and mirrorless cameras are already equipped with 42 megapixel sensors. And even in mobile phones You can find image resolutions of more than 40 million pixels! The average number of pixels is 24 million. Canon EOS-1D X Mark II records video with a bitrate of 800 Mbps. One forty-second video from this camera takes about 5 GB! And the higher the resolution of the photo and video, the more space on the flash drive will be required.

The size of the file directly depends on the number of details stored in it, that is, on its quality. If you shoot photos in RAW+JPEG format, the size of one photo can be more than 100 MB! Now there is an ultra-high-resolution 4K video format, where one minute can take up the volume of an average amateur photo shoot.

There is practically no point in purchasing memory cards with a capacity of less than 16 GB today. If you plan to actively take photographs and shoot some video, we recommend memory cards with a capacity of 16 and 32 GB. At the same time, you shouldn’t shoot all the material on one card; it’s better to split the session into several flash drives. The point is not so much that memory cards are unreliable (they are very reliable), but that we can lose them. When shooting video, the memory card capacity should be selected so that it is enough for the entire shooting day. Below we provide a table for modern multi-megapixel cameras, which will allow you to roughly estimate how many pictures and minutes of video you can record on memory cards of different sizes.

Memory capacity	Video Full HD H.264	Photo RAW+JPEG
8 GB	10 minutes	80 photos
16 GB	21 minutes	160 photos
32 GB	43 minutes	320 photos
64 GB	1 hour 27 minutes	650 photos
128 GB	2 hours 54 minutes	1280 photos

HOW TO DETERMINE THE OPTIMUM WRITE AND READ SPEED?

Many people do not pay attention to the speed of the memory card. But in vain, because it is more important than the volume, because it determines the scope of the flash drive. For example, it will not be possible to record Full HD on a slow card - the recording will constantly be interrupted. If you shoot a series of frames with a slow flash drive, the camera may freeze for a long time while recording it. We once had to wait as long as three minutes for a series of images from a 42-megapixel camera to be recorded on a Class 10 card. High-speed photography at over 10 frames per second is no longer surprising, and 4K and 360° video formats have raised the bar for recording speeds to new heights. So how can you tell a fast memory card from a slow one and choose the best one for your device?

Previously, flash cards were divided into classes: 2, 4, 6 and 10. Essentially, this is the write speed in megabytes per second: class 2 - 2 MB/s, class 6 - 6 MB/s. The tenth class means that the flash drive can record pictures at a higher speed than 10 MB/s. Such fast flash drives, in addition to the letter C, are marked with the letter U with the number 1 or 3. The manufacturer always indicates on the card the actual read and write speed (for example, 45 MB/s), and on the right - the class of the card. The situation is similar with Compact Flash and microSD.

HOW TO CHOOSE THE SPEED CLASS OF A MEMORY CARD?

If you plan to shoot video in Full HD format, then memory cards of at least speed class 6 are suitable for you, and better yet, speed class 10 or higher. The same cards are suitable for everyday photography. For serial shooting, it is better to choose faster flash drives - about 45 MB/s. This will allow you to photograph in short, continuous bursts. With slow flash drives, you risk missing an interesting shot while your camera records previous shots.

Filming moving objects is also presented big demands to speed: you have to shoot almost continuously in bursts. And here the ideal speed of a memory card is already 80 MB/s and higher.

Finally, for professionals who shoot long bursts, the fastest flash drives with speeds of 90 MB/s are a must. Recording speed is key, and you shouldn't skimp on it. A professional camera with a high-speed memory card is capable of shooting a continuous series of frames until the free space runs out.

Reading speed is less important for a camera. It is always higher than or equal to the recording speed. By choosing a memory card with a high write speed, you will definitely not experience problems with reading speed.

WHAT TO PAY ATTENTION TO?

As long as the memory card is inside the device, it is protected. But as soon as it is removed, it immediately becomes vulnerable. At least once, the photographer will definitely drop it, leave it on the table under the scorching sun, in a photo bag in the bitter cold, or even worse - pour water on it! What can we say about traveling: at the airport, luggage will definitely be x-rayed. We recommend choosing memory cards that are protected from all of the above negative influences.

WHICH MEMORY CARD MANUFACTURER SHOULD I CHOOSE?

Prophotos recommends SanDisk memory cards. With them, we have been testing all the cameras that come to our editorial office for many years, because we trust their reliability and value their high performance. Below are recommendations for different types of devices.

The following memory card models are ideal for digital SLR cameras with interchangeable lenses: SanDisk Extreme PRO microSDXC UHS-II, SanDisk Extreme PRO SDHC/SDXC UHS-I, SanDisk Extreme PRO SDHC/SDXC UHS-II, SanDisk Extreme Plus SDHC/SDXC UHS- I, SanDisk Extreme microSDHC/microSDXC UHS-I, SanDisk Extreme Pro CompactFlash, SanDisk Extreme Plus microSDHC/microSDXC UHS-I, SanDisk Extreme SDHC/SDXC UHS-I, SanDisk Extreme CompactFlash.

For amateur photo and video shooting, depending on the type of camera, the following are suitable: SanDisk Extreme Plus microSDHC/microSDXC UHS-I, SanDisk Extreme Plus SDHC/SDXC UHS-I, SanDisk Ultra PLUS microSDHC/microSDXC UHS-I, SanDisk Ultra PLUS SDHC/SDXC, SanDisk Ultra microSDHC/microSDXC UHS-I, SanDisk Extreme microSDHC/microSDXC UHS-I, SanDisk Extreme SDHC/SDXC UHS-I, SanDisk Ultra microSDHC/microSDXC UHS-I, SanDisk Ultra SDHC/SDXC, SanDisk microSD/microSDHC.

For professional video shooting: SanDisk Extreme PRO SDHC/SDXC UHS-I, SanDisk Extreme PRO SDHC/SDXC UHS-II, SanDisk Extreme PRO Compact Flash, SanDisk Extreme PRO CFast2.0, SanDisk Extreme PLUS SDHC/SDXC UHS-I, SanDisk Extreme SDHC /SDXC UHS-I, SanDisk Extreme CompactFlash.

The following memory cards are ideal for action cameras: SanDisk Extreme PRO microSDXC UHS-II, SanDisk Extreme PLUS microSDHC/microSDXC UHS-I, SanDisk Extreme microSDHC/microSDXC UHS-I, SanDisk Ultra PLUS microSDHC/microSDXC UHS-I, SanDisk Ultra microSDHC /microSDXC UHS-I.

For most people, microSD is just a form factor, but in reality it is not. You can easily insert any microSD card into a standard slot, but not all of them will work, since the cards differ in many ways.

Format

There are three different SD formats, available in two form factors (SD and microSD):

SD (microSD) - drives up to 2 GB, work with any equipment;
SDHC (microSDHC) - drives from 2 to 32 GB, work on devices supporting SDHC and SDXC;
SDXC (microSDXC) - drives from 32 GB to 2 TB (currently maximum 512 GB), work only on devices with SDXC support.

As you can see, they are not backward compatible. Memory cards of the new format will not work on old equipment.

Volume

Support for microSDXC declared by the manufacturer does not mean support for cards of this format with any capacity and depends on the specific device. For example, the HTC One M9 works with microSDXC, but officially only supports cards up to 128 GB inclusive.

Another one is related to storage capacity. important point. All microSDXC cards use the exFAT file system by default. Windows has supported it for more than 10 years, it appeared in OS X starting with version 10.6.5 (Snow Leopard), Linux distributions support exFAT, but it does not work out of the box everywhere.

High speed UHS interface

SDHC and SDXC cards can support the Ultra High Speed interface, which, with hardware support on the device, provides higher speeds (UHS-I up to 104 MB/s and UHS-II up to 312 MB/s). UHS is backward compatible with earlier interfaces and can work with devices that do not support it, but at standard speeds (up to 25 MB/s).

2. Speed

Classifying the write and read speeds of microSD cards is as complex as their formats and compatibility. The specifications allow you to describe the speed of cards in four ways, and since manufacturers use them all, there is a lot of confusion.

Speed class

The Speed Class is associated with the minimum write speed to a memory card in megabytes per second. There are four in total:

Class 2- from 2 MB/s;
Class 4- from 4 MB/s;
Class 6- from 6 MB/s;
Class 10- from 10 MB/s.

Cards running on the high-speed UHS bus currently have only two speed classes:

Class 1 (U1)- from 10 MB/s;
Class 3 (U3)- from 30 MB/s.

Since the speed class designation uses the minimum entry value, theoretically a card of the second class may well be faster than a card of the fourth. Although, if this is the case, the manufacturer will most likely prefer to indicate this fact more explicitly.

Maximum speed

The speed class is quite enough for comparing cards when choosing, but some manufacturers, in addition to it, use the maximum speed in MB/s in the description, and more often than not even the write speed (which is always lower), but the read speed.

These are usually the results of synthetic tests under ideal conditions, which are unattainable in normal use. In practice, speed depends on many factors, so you should not rely on this characteristic.

Speed multiplier

Another classification option is the speed multiplier, similar to the one used to indicate the read and write speed of optical discs. There are more than ten of them, from 6x to 633x.

The 1x multiplier is 150 KB/s, that is, the simplest 6x cards have a speed of 900 KB/s. The fastest cards can have a multiplier of 633x, which is 95 MB/s.

3. Objectives

Choose the right card taking into account specific tasks. The biggest and fastest is not always the best. In certain use cases, the volume and speed may be excessive.

When buying a card for a smartphone, capacity plays a bigger role than speed. The advantages of a large drive are obvious, but the advantages of high transfer speeds on a smartphone are practically not felt, since large files are rarely written and read there (unless you have a smartphone with 4K video support).

Cameras that shoot HD and 4K video are a completely different matter: both speed and volume are equally important here. For 4K video, camera manufacturers recommend using UHS cards U3, for HD - regular Class 10 or at least Class 6.

For photos, many professionals prefer to use several smaller cards to minimize the risk of losing all the images in force majeure circumstances. As for speed, it all depends on the photo format. If you shoot in RAW, it makes sense to invest in microSDHC or microSDXC class UHS U1 and U3 - in this case they will reveal themselves fully.

4. Fakes

No matter how trivial it may sound, but buying a fake under the guise original maps Now it's easier than ever. Several years ago, SanDisk claimed that a third of SanDisk memory cards on the market were counterfeit. It is unlikely that the situation has changed much since then.

To avoid disappointment when purchasing, just follow common sense. Refrain from buying from untrustworthy sellers, and beware of offers of “original” cards that are significantly lower than the official price.

Attackers have learned to fake packaging so well that sometimes it can be very difficult to distinguish it from the original. You can judge with complete confidence the authenticity of a particular card only after checking using special utilities:

H2testw- for Windows;

If you have already experienced the loss of important data due to a memory card failure for one reason or another, then when it comes to choosing, you will most likely prefer a more expensive card a well-known brand than an affordable “no name”.

In addition to greater reliability and safety of your data, with a branded card you will receive high speed and a guarantee (in some cases even lifetime).

Now you know everything you need to know about SD cards. As you can see, there are many questions that you will have to answer before purchasing a card. Perhaps, best idea will have different cards for different needs. This way you can take full advantage of the equipment without exposing your budget to unnecessary expenses.

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