Kodak confirms existing-stock sub-brand status. First-hand controlled comparison reports slight differences from Pro Image; observed 100-8 signing is a clue, not a complete identity crosswalk.
Still needed: Obtain a brand-issued exact product/coating crosswalk or inspect a documented, dated retail roll and base-stock control.
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 Γ 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.
No product-specific spatial-resolution input is established here. You can explore a labeled base-stock scenario in the playground; it does not establish this retail filmβs performance.
INSPECTABLE EVIDENCE
Sources & Audit Trail
Still needed: Obtain a brand-issued exact product/coating crosswalk or inspect a documented, dated retail roll and base-stock control.
Checked technical publication list. No exact ColorPlus, current KODACOLOR or current EKTACOLOR PRO sheet listed. PORTRA editions are not silently substituted.
Verified Kodak caption was visible in browser without sign-in. Explicitly describes Kodacolor 100/200 as sub-brands of existing Kodak films, without naming which films.
Accessible methods describe controlled scene/light, exposure brackets, common development and scanning; author reports subtle color differences. Full edge-marking section is subscription restricted and was not inspected. Does not prove a universal formulation difference.
Author reports Kodak 100-8 and 200-8 edge markings on release-day rolls. Independent observation with a documented workflow; not manufacturer identity certification or resolving-power measurement.
Historical editions, coating revisions, development and retail batches retain their own scope. Research supplements do not change the main color-film catalog.