SD memory cards

Which SD card is suitable for your camera?

The most important selection criterion is the card’s writing speed. A fast memory card clears the camera’s buffer memory more quickly during continuous shooting and ensures that video recording is not interrupted.

• Photography and Full HD video – U3 / V30 riittää hyvin. Esimerkiksi SanDisk Extreme Pro 128 Gt on tähän edullinen ja luotettava valinta.
• 4K video and fast continuous shooting – V60 UHS-II is a good choice for most modern system cameras.
• High-bitrate 4K, 6K and 8K video, as well as All-Intra video – V90 UHS-II. Check your camera’s user manual to see which speed class the shooting mode requires.

UHS-II cards also work in a UHS-I slot, but in that case the card operates at UHS-I speeds. The full speed is only utilised if both the camera and the card reader support UHS-II.

A brief guide to the markings

• SDHC / SDXC – SDHC cards range from 4 to 32 GB, whilst SDXC cards range from 64 GB to 2 TB.
• U3, V30, V60, V90 – Guaranteed minimum write speed: U3 and V30 = 30 MB/s, V60 = 60 MB/s, V90 = 90 MB/s.
• UHS-I / UHS-II – the interface that determines the card’s maximum speed. UHS-II cards have a second row of connectors and are significantly faster.
• Read and write speeds (e.g. R280 / W180) – the card’s maximum speeds in MB/s. The read speed affects how quickly images are transferred to the computer.

Tips for using memory cards

• Always initialise a new card in the camera before using it for the first time.
• If your camera has two card slots, use the second one to keep a backup during important shoots.
• Two smaller memory cards are safer than one large one – if one card fails, you won’t lose all your photos.
• A fast UHS-II card reader significantly reduces the time taken to transfer images.

Find out more about choosing memory cards from our guide to buying memory cards. You’ll find cards for action cameras and drones in this section microSD memory cards. See also system cameras.