Review on 💾 SanDisk 128GB Extreme PRO CFexpress Card Type B - SDCFE-128G-GN4NN" - "SanDisk 128GB Extreme PRO CFexpress Card B Type - SDCFE-128G-GN4NN by Paul Vanlaere

I never tried XQD cards when they first came out, mainly because they were more expensive than SDXC and their write speed was only slightly higher than the fastest SDXC cards (300Mb/s) . I don't shoot 4K video, which is what these cards were primarily designed for, but I do shoot a lot of macro photography with the Nikon D850, and a lot of it involves focus stacking - combining multiple images with slightly different focus points into one image with incredible depth, sharpness. With SDXC cards that "only" write at 300 Mbit/s, my buffer filled up after about 20 shots, after which I either waited until the buffer was empty or shot much more slowly. Having to stop and wait for the buffer to catch up made it more likely that the wind would ruin the set or change the lighting. When I saw these CFexpress cards, which advertise write speeds of 1200 Mbit/s, I was intrigued. I installed the firmware update required for the D850 to recognize CFexpress and then tried one of these cards. To my delight, the camera buffer *never* fills up. I can literally keep shooting until the card is full or the battery is dead. Now I can take series with over 100 pictures. The only downside I'm aware of is that these cards get very hot during continuous shooting and when copying images to a computer. And I mean hot, not warm. After pulling the card out, I hold it by the edges and wave it around to cool it down faster. Time will tell if these cards will survive many of these burn cycles or if they will wear out sooner due to the heat generated. At least for now, these cards allow me to take the photos I love the most. And if I can find a card reader with a built-in fan or heatsink, I'll be interested.