The Delkin Black CFexpress cards provide photographers and videographers with a reliable and trustworthy solution for professional use. Specifically designed to meet the data-intensive demands of today's broadcasting, film, and photography industries, the Delkin Black CFexpress Type B cards offer sustained sequential write speeds of at least 1240 MB/s, ensuring flawless video recording in cinema quality, including 8K RAW 12-bit at 60fps in the Nikon Z9. When using these cards in the Nikon Z9, photographers can also exceed the maximum values specified in the camera manual and capture an unlimited number of high-resolution RAW photos with a single press. Additionally, the cards are capable of transferring data at speeds of up to 1725 MB/s, ensuring the fastest and most efficient data transfer from the card to the computer, allowing for instant file access and quicker post-production starts.