Silver halide black-and-white, frequently push-processed. Dense shadow grain with steep gamma curve. A staple of documentary and street photography.
Measured parameters
Crystal size0.35
Luma RMS0.50
Chroma RMS0.10
DistributionBlue noise · multi-octave
Tonal responseShadow 0.5 · Mid 1.0 · Highlight 0.35
Chroma ratio1.5×
Format35mm
ProcessB&W
Visual samples
Ilford HP5 Plus · graded frame · grain applied
400% crop · midtone region
Tonal response · characteristic curve
Comparison
Clean
BEFOREClean footage — no grain
Ilford HP5 Plus
AFTERSame frame with Ilford HP5 Plus grain applied