Pentax: Lens Development Stories
Ricoh Imaging has published two related kinds of first-party lens feature: developer interviews for recent Star-series and Limited lenses, and the older PENTAX STORY product features with engineer-interview sections.
The table follows the lenses' introduction chronology, newest first.
| Lens | Official article | Surface & Stop |
|---|---|---|
| HD PENTAX-D FA 21mmF2.4 ED Limited DC WR | Development Story | D FA 21mmF2.4 Limited |
| HD PENTAX-DA★ 16–50mmF2.8 ED PLM AW | Development Story | — |
| HD PENTAX-D FA★ 85mmF1.4 ED SDM AW | Development Story | D FA★ 85mmF1.4 |
| HD PENTAX-D FA★ 50mmF1.4 SDM AW | Development Story | D FA★ 50mmF1.4 |
| HD PENTAX-D FA★ 70–200mmF2.8ED DC AW | PENTAX STORY | D FA★ 70–200mmF2.8 |
| HD PENTAX-D FA 150–450mmF4.5–5.6ED DC AW | PENTAX STORY | — |
The Surface & Stop DA★ 16–50mm is the earlier SDM design, not the PLM lens discussed in Ricoh's article, so it is deliberately not cross-linked.