Canon 5D Mark IV photographers know that the right memory card is essential when it comes to capturing the professional quality images they desire. The SanDisk Extreme PRO is the best CF memory card that provides them with the necessary reliability and power. It offers a fast write speed of up to 160MB/s and a read speed of up to 150MB/s so that users can transfer their photos quickly, even in large file sizes. Furthermore, the SanDisk Extreme line has passed rigorous stress tests conducted in-house and is certified as weather-proof, shock-proof, temperature-resistant, and x-ray-proof - perfect for keen photographers who want to capture a moment without worrying about failure from their hardware. With an extensive range of storage options from 16GB to 256GB, you'll find exactly what you need for your pictures or videos; be it in sports photography or studio-grade shots. So for those looking for a dependable CF card for their Canon 5D Mark IV camera, there is no better choice than the SanDisk Extreme PRO CF Memory Card.