Daylight cinema negative, ECN-2. Moderate grain with refined detail and wide shadow latitude. The default stock for contemporary 35mm production.
Measured parameters
Crystal size0.8
Luma RMS0.28
Chroma RMS0.40
DistributionBlue noise · dual octave
Tonal responseShadow 0.22 · Mid 0.95 · Highlight 0.18
Chroma ratio1.7×
Format35mm
ProcessECN-2
Visual samples
Vision3 250D · graded frame · grain applied
400% crop · midtone region
Tonal response · characteristic curve
Comparison
Clean
BEFOREClean footage — no grain
Vision3 250D
AFTERSame frame with Vision3 250D grain applied