Currently I can't find a good and fast method to transfer 4K Video files from the iPhone X to my Mac. The videos are recorded in 4K 30 FPS in H.264 but I have the High Efficiency option checked (for the higher frame rates). When using Air Drop, either the iPhone before sending (shorter clips) or the Mac after receiving (longer clips) change the video file and reduce the quality. The file size is almost cut it half! That is something I really don't want. When using Image Capture and the Lightning to USB-C cable, the transfer speeds are only on USB 2.0 levels (4-7MB/s) but I'm able to copy the actual file over. I'd love to have the speed of AirDrop while still getting an unmodified file. What other methods do offer that? Remark: Cloud services are not an option. Slow and/or expensive when travelling.