# ISO 11421:1997 — Withdrawn and superseded ISO standards

For ISO 11421:1997, item title is Optics and optical instruments — Accuracy of optical transfer function (OTF) measurement; status code is 9599; successor is ISO 11421:2025; withdrawn / published date is 1997-09-11, recorded from its source on 2026-08-05.

- **Identifier:** ISO 11421:1997 _(verified: appears in the quote below)_
- **Item title:** Optics and optical instruments — Accuracy of optical transfer function (OTF) measurement _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 11421:2025
- **Withdrawn / published date:** 1997-09-11 _(verified: appears in the quote below)_

## What the source says

> 22463,IS,,ISO 11421:1997,Optics and optical instruments — Accuracy of optical transfer function (OTF) measurement,Optique et instruments d'optique — Exactitude du mesurage de la fonction de transfert optique (OTF),1997-09-11,1,['17.180.01'],ISO/TC 172/SC 1,9599,,[85988],"['en','fr']",30,

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).