For a long time the read/write transfer rates for SD memory cards has lagged behind CF cards. That has now changed. SanDisk’s new SDHC/SDXC Extreme Pro card with UHS-II sets a new standard of up to 280MB/s read and 250MB/s write. Part of what has pushed this technological advance is the advent of 4K video, but it will make a difference for still shooters too as long as your camera is designed to take advantage of the card’s protocols. At the moment, it seems Fujifilm’s new X-T1 may be the first camera to take advantage of this. More to follow, no doubt.
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