- 35mm 864.0mm2
- 18.1 megapixels
- ISO 100 - 51,200
- Go in depth with our full Canon 1DX Review.
- See real-world photos taken with the 1DX.
- Succeeded by the Canon 1DX Mark II
- Compare 1DX vs 1DX Mark II
- Compare Sony DSLR-A550 vs Canon 1DX Mark II
Maximum effective ISO is an estimate of the highest sensitivity at which a camera can capture excellent quality photos.
Cameras with higher effective ISO will be better choices for indoor photography, night shooting, and indoor sports photography, especially if you intend to make large prints.
You can learn more at our glossary entry.
Maximum effective ISO test data courtesy of DxO Mark.
1DX test data on DxO Mark DSLR-A550 test data on DxO Mark