Lexar 2000x 64GB UHS-II. Based on my current tests, the Lexar 2000x is your best bet for UHS-II memory cards in the Canon 5D IV. They were one of the first companies to start making UHS-II cards and they get a lot of great reviews. In-Camera Speed: 70.52 MB/s – Amazon. Winner! 75% Canon EOS 5D Mark IV Spotted a mistake with these camera specs? Please let us know so we can update it! Check our Canon EOS 1D X vs Canon EOS 5D Mark IV camera comparison of specs, features, prices and scores. Which of these cameras is the better choice for you? 1DX II: 3207 20.2 MP 14 fps. 1DX: 2786 18.1 MP 12 fps. 5D IV 2995 30.4 MP 7 fps. The way I see it is, if you need to crop substantially time to time, than the 5D IV. (30.4 MP) If you are mostly into BIF, then 1DX. (12 fps) If I had the money, I would go for the 5D IV as it suits my shooting style more. The 1DX Mark II has been on my mind for the past few months. It's old but I think it's still competent! What do you think?⚡MY GEAR⚡Main Camera: At base ISO, the D810 sensor is very strong but it drops back when you dial up ISO. The D750 sensor is stronger at higher ISOs but both are outperformed by the 1DX Mark II and the Sony A7R II sensor at ISOs greater than 400. Even the old and much maligned 5D mark III sensor holds its own against the D810 at higher ISOs. High Performance All-Rounder. The 4th generation model of Canon’s best-selling full-frame EOS camera EOS 5D Mark IV comes equipped with 30.4megapixel full-frame CMOS sensor and highly sought-after Dual pixel CMOS AF. High-speed, high-precision AF is realized not only for stills, but also for 4K movie shooting, making pro-level footage a EshoAiH.