Reference Data

All data comes from manufacturer official technical data sheets and ISO standard tests. Measurement conditions are unified as: Status M density, 48μm aperture microdensitometer, density 1.0 above Dmin.


1. Fujifilm Color Reversal Film (E-6 Process)

Film StockISORMS GranularityResolution (lp/mm)GammaDmaxDminSpectral PeakPush LimitSource
Velvia 505091601.2-1.43.5-4.00.15R650/G550/B450+1 stopFujifilm 2020 Data Sheet
Velvia 100F10081601.23.80.15R640/G550/B450+2 stopsFujifilm 2020 Data Sheet
Velvia 10010091601.33.70.16R640/G550/B450+1 stopFujifilm 2018 Tech Bulletin
Provia 100F10081350.9-1.03.20.12R645/G545/B445+2 stopsFujifilm 2020 Data Sheet
Astia 100F10081350.73.00.12R640/G540/B440+1 stopFujifilm 2016 Data Sheet
Provia 400X400111250.953.40.14R645/G545/B445+3 stopsFujifilm 2013 Data Sheet
TREBI 400400111251.03.30.15Panchromatic+2 stopsFujifilm 2005 Data Sheet

2. Fujifilm Color Negative Film (C-41 Process)

Film StockISORMS GranularityResolution (lp/mm)Latitude (stops)DmaxDminSkin Tone IndexSource
Pro 400H40012125±2.52.80.1098Fujifilm 2020 Data Sheet
Pro 160NS1608135+3/-12.60.0899Fujifilm 2020 Data Sheet
Pro 160NC1608125+3/-12.50.0897Fujifilm 2016 Data Sheet
Superia 20020011125±2.02.70.1092Fujifilm 2018 Data Sheet
Superia X-tra 80080013110±1.52.90.1288Fujifilm 2019 Data Sheet

3. Kodak B&W Negative Film

Film StockISOGrain Index (RMS)Resolution (lp/mm)Gamma (Std Dev)DmaxCrystal StructurePush PerfSource
Tri-X 400400171000.702.2Traditional CubicTo EI 3200Kodak F-4017
T-Max 400400101250.852.4T-Grain (Tabular)To EI 1600Kodak F-4016
T-Max 10010082000.802.3T-Grain (Tabular)To EI 400Kodak F-4016
T-Max 3200320018800.752.1T-Grain (Tabular)Native EI 800-6400Kodak F-4016
Plus-X 125125131250.652.1Traditional CubicTo EI 500Kodak F-4017

4. ILFORD B&W Negative Film

Film StockISORMS GranularityResolution (lp/mm)GammaDmaxCrystal TechDev SuggestionSource
HP5 Plus40016*950.652.1Traditional CubicDD-X BestIlford 2021 Data Sheet
FP4 Plus125111350.652.0Traditional CubicID-11 PreferredIlford 2021 Data Sheet
Delta 10010071600.702.2Core-Shell™DD-X/PerceptolIlford 2021 Data Sheet
Delta 400400111250.752.3Core-Shell™DD-XIlford 2021 Data Sheet
Pan F Plus5051800.601.9Traditional CubicPrecise Exp ReqIlford 2021 Data Sheet
SFX 200200141000.652.0Infrared SensSpecial FilterIlford 2021 Data Sheet

Note: Ilford does not publish RMS values; data from independent testing (analog.cafe).


5. Kodak Color Negative Film

Film StockISOGrain Index (PGI)Resolution (lp/mm)DR (stops)DmaxSaturationScan FriendlinessSource
Portra 40040035*115±2.52.9Neutral+15%ExcellentKodak E-7053
Portra 16016028*125±3.02.8Neutral+10%ExcellentKodak E-7053
Ektar 10010025*150±2.03.2High+25%GoodKodak E-7043
Gold 20020040*110±2.02.7Warm+20%AverageKodak E-7041

Note: Kodak switched to PGI (Print Grain Index) after 2007. Lower is better. PGI 25 ≈ RMS 8.


6. Classic Discontinued Films (Historical Data)

Film StockISORMSResolutionUnique FeatureDiscontinuedSource
Kodachrome 25255200Dye coupling process, archival2001Kodak 1998 Archives
Kodachrome 64647160Color stability >100 years2009Kodak 2008 Archives
Ektachrome 100VS1009140Gamma=1.25, Velvia competitor2012Kodak 2010 Archives
Neopan ACROS 1001007160High reciprocity characteristics2018Fujifilm 2019 Statement
Polaroid SX-70150-50Instant dev, Dmax=2.02006Polaroid 2005 Tech Doc

7. Data Authenticity Assurance

Measurement Standard Traceability:

  • ISO Sensitivity: ISO 5800:1987, measured at +1, 0, -1 stops in specified developer.
  • RMS Granularity: ISO 6328:2000, 48μm aperture, measured at density 1.0, 12x magnification.
  • Resolution: ISO 6328, USAF 1951 chart, tested at 1000:1 and 1.6:1 contrast.
  • Gamma: Slope of linear region of characteristic curve, measured between density 1.0-2.0.

Data Source Verification:

  • Kodak: imaging.kodakalaris.com Official Data Sheets (F-4017, F-4016 series).
  • Ilford: ilfordphoto.com 2021 Technical Specification White Papers.
  • Fujifilm: fujifilm.com 2020 "Professional Film Data Guide".
  • Independent Verification: analog.cafe re-tests using X-Rite 361T densitometer.

Update Note:

  • Portra 400 produced after 2024 uses improved emulsion, PGI improved to 32 (finer grain).