The Canon C50 is a purpose-built cinema camera with reliable cooling, built-in IS, and full RF/EF cine lens support—engineered for real production needs. The Nikon ZR, while spec-heavy with RED codecs and high frame rates, suffers from thermal cutoffs, cropped 4K/120p, limited lens options, and disabled audio features in pro modes.
Conclusion:
The C50 is a dependable cinema tool; the ZR is a flashy hybrid that struggles in professional workflows.