The title retains the document edition where identified. Research check dates are not publication dates. Consult the PDF for printed revision and process conditions.
Manufacturer confirms original 500-speed motion-picture base; 5219 is a strong candidate. Current contract-coated still film and C-41 gamma prevent automatic use of Kodak ECN-2 MTF.
AHU/remjet-free tungsten film with EI 500 ECN-2 is consistent with current 500T technology, but RETO does not name Kodak/5219. AHU is a construction feature, not an exclusive manufacturer identity.
Proposed identification
Kodak VISION3 base; consistent with the recorded 500T candidate but exact current stock code remains undisclosed by RETO.
Still needed: Obtain a brand-issued exact product/coating crosswalk or inspect a documented, dated retail roll and base-stock control.
RELATED RETAIL FILM → SELECTED STOCK
Candido 800T ↗Current version confirmed · older sample unresolved
Archived current 800 Reserve C-41 and ECN-2 sheets explicitly identify VISION3 500T 5219. This stronger identity evidence applies to current Reserve, with earlier tested 800T generation unconfirmed; C-41 is not Kodak ECN-2 MTF.
Flic explicitly names the Kodak VISION3 base and ECN-2 process. The archived Kodak sheet is a base-stock reference; the Flic retail roll was not independently measured.
A solid connection establishes the stated relationship, such as a respool or family variant. It does not establish unchanged resolution, processing or coating generation. Dashed connections retain the identity uncertainty.
Results below use a 36 × 24 mm image area and ideal two-sample spatial sampling. Approximate graph readings retain their source process; a color-layer envelope is not an uncertainty interval.
Approximate graph reading
Approximate MTF50
~3.9–12.9 MP
33.5–61.1 cycles/mm · 36 × 24 mm
Manufacturer plot conditions; see full source page.
Original unit: cycles/mm. Spatial frequency from the labeled MTF axis.
Derivation: graph digitized raster envelope. Formal uncertainty is not established for digitized curves.
Inspect annotated chart excerpts
Audit excerpts show approximate threshold readings across several source films. Follow the source-page link for this film’s complete axes, process and legend.
2025 catalog-number transition. Record backing generation and processing; not every current VISION3 roll can be assumed to carry the old rem-jet backing.
March 2026 AHU-generation technical information; ECN-2, MTF and sensitometry.
Historical editions, coating revisions, development and retail batches retain their own scope. Research supplements do not change the main color-film catalog.
