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Why not use MicroSD cards in DSLR or Mirrorless cameras?



MicroSD cards are becoming increasingly popular, from action cameras to mobile phones and video game consoles. However, you probably should not use a camera in your dedicated camera, at least not if it does not have a MicroSD card slot.

Why? It's about the "shell," the small plastic adapter that comes with almost any commercially available MicroSD card. This is useful if you need to read the contents of the MicroSD card on a laptop or desktop without a dedicated MicroSD slot, but are not designed for continuous use. It is, frankly, cheap and probably slows down the writing speed of your camera.

Let us step back a little. Modern cameras can handle huge amounts of data: images with more than 1

5 megapixels as well as HD and 4K video at 60 frames per second or more. Unlike smartphones, full-size cameras do not have a lot of storage space – they need to be immediately written to a flash memory card. The more pictures and videos you record per second, the faster you need your camera to write data.

That's why the "performance" of a memory card is so important: these extra labels, such as "Class 10" and "UHS" -3 "are all about the maximum amount of data that the card can handle for reading and writing at any given time , If you buy a fast and expensive MicroSD card, the card can handle the data throughput easily, but the same thing does not apply to the SD adapter sleeve that comes with it.

The sleeve should be technically capable The same fast data transfer as the tiny card is possible – the electrical contacts are basically just miniature extension cables. In fact, some of the cases I've tested can give the same results in driving speed tests as the unsupported MicroSD cards in which they are housed. However, in conjunction with a high performance camera, the extra steps of writing slow down the performance.

A practical example: My Sony Alpha A6000 can record six 24-megapixel images per second. At high shutter speeds, it sounds like a small plastic machine gun. However, this is a huge amount of data, every second between 20 and 100 megabytes, depending on the image content and quality setting. If the relatively small memory buffer of the camera's own hardware is exhausted, it needs a super-fast SD card to fully exploit the hardware features.

My preferred card is this SanDisk Ultra SDXC. The reading speed is 80 MB / s. SanDisk does not announce the writing speed. Testing on my PC, however, results in about 40 MB / s. If the shutter speed of the camera is below the maximum number of shots per second, it takes a maximum of five to six seconds for the camera to slow down to continue writing, approximately 55-60 frames.

I also have a massive Samsung 256GB EVO Plus MicroSD card that is normally present in my phone. It's even faster than the full-size SanDisk SD card with a write speed of about 60 MB / s. Technically, when I put them in my camera, I should be able to do more full-speed shots before slowing down. Since it is MicroSD and not SD, the adapter sleeve is required. Despite the outstanding write speed thanks to U3 classification, the camera slows down after just three seconds and about 35 photos. The only variable is the adapter sleeve, which can not compete with the camera or the card it holds.

Using MicroSD cards in devices designed for them is not wrong. To be honest, most users who use smaller cards with adapter sleeves do not notice the difference or not often. If you purchased your DSLR camera or a mirrorless camera for fast and reliable performance, you should buy a separate card designed specifically for your format – most of the models on the market have full size SD available. They are quite cheap right now and the more reliable performance is worth it.


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