Mentioning it just at the end of the unveiling of the EOS C300, Canon has shown an early prototype of an upcoming pro DSLR with record-setting video. The unnamed prototype would have a full-frame CMOS sensor and could shoot 4K (usually 4096x2160) video at 24FPS when using Motion JPEG. Very little else was mentioned, although it had the same red "C" badge from the C300 that denoted the Cinema badge.
