Canon's ultimate professional DSLR — the 1DX Mark III for sports, press, and wildlife photography.
The Canon EOS 1DX Mark III was released in February 2020 as the culmination of Canon's DSLR development — the EOS-1 series professional flagship and the last major Canon DSLR before the mirrorless EOS R1 succeeded it in 2024. The 20.1MP full-frame CMOS sensor with dual DIGIC X processors delivered the fastest RAW burst of any Canon DSLR: 16fps mechanical and 20fps electronic. It launched with dual CFexpress Type B card slots, among the first cameras to adopt the standard. Internal 4K/60fps and Cinema RAW Light recording placed it in direct competition with cinema cameras for high-end production use.
The 20.1MP full-frame CMOS sensor pairs with dual DIGIC X processors. The 191-point all-cross-type AF system in the optical viewfinder provides comprehensive frame coverage; Dual Pixel CMOS AF in live view uses 525 zones with deep-learning subject recognition for humans and animals. Mechanical shutter bursts at 16fps; electronic shutter at 20fps in RAW. 4K/60fps records internally in Cinema RAW Light or H.264; 6K oversampled RAW is available via HDMI to an external recorder. ISO 100-102400 native, expandable to 204800. Dual CFexpress Type B card slots. LP-E19 battery, rated approximately 2130 shots per charge via OVF. Body weight approximately 1440g with battery and card. Comprehensive weather sealing throughout.
The 1DX Mark III's most significant practical advances over the Mark II were the 20fps electronic RAW burst — enabled by improved sensor readout speed and dual DIGIC X throughput — and the transition to CFexpress Type B, providing sequential write speeds that earlier CF media could not sustain for prolonged RAW sequences. Dual Pixel CMOS AF in live view reached phase-detect tracking performance that earlier live-view systems could not achieve. As Canon's final EOS-1 series DSLR, the 1DX Mark III represents the highest point in the EOS-1D development arc that began with the 4.2MP original in 2001.
On the used market the Canon EOS 1DX Mark III is a 2020 professional flagship available at a significant step below its launch price. Shutter actuations are the critical condition check — the body is rated at 500,000 actuations and used professional copies may have very high counts; verify via EXIF or Canon's camera data service. Dual CFexpress Type B slot contacts. Weather sealing at body seams, port covers, and mount. LP-E19 battery health — shared with the EOS-1DX series. The Canon EOS R1 (2024) is the mirrorless successor in the 1-series line. Compatible with all Canon EF-mount lenses.