SIGMA: Ohsone's Anecdotes
Ohsone's Anecdotes
Ohsone's Anecdotes is SIGMA's closest counterpart to Nikon's long-running series: numbered product tales written from an engineer's perspective. It mixes individual-lens development stories with multi-generation histories of 28mm primes and ultra-telephoto lenses.
SIGMA's current English pages identify the episode number but do not display a publication date. The list therefore follows the official publication sequence, newest episode first.
Episode index
| Sequence | Lens or subject | Official article | Surface & Stop |
|---|---|---|---|
| Episode 10 | Ultra-telephoto lenses, part 3: ultrasonic motors, zooms, and mirrorless | Read at SIGMA | — |
| Episode 9 | Ultra-telephoto lenses, part 2: autofocus and SLD glass | Read at SIGMA | — |
| Episode 8 | Ultra-telephoto lenses, part 1: chromatic aberration and mirror lenses | Read at SIGMA | — |
| Episode 7 | 24–70mm F2.8 DG DN | Art | Read at SIGMA | — |
| Episode 6 | 45mm F2.8 DG DN | Contemporary | Read at SIGMA | 45mm F2.8 DG DN |
| Episode 5 | U-AF 55–200mm F4.5 | Read at SIGMA | — |
| Episode 4 | SIGMA's 28mm primes, part 2: the autofocus era | Read at SIGMA | 28mm F1.8 EX DG · 28mm F1.4 DG HSM Art |
| Episode 3 | SIGMA's 28mm primes, part 1: the manual-focus era | Read at SIGMA | — |
| Episode 2 | 70–200mm F2.8 DG OS HSM | Sports | Read at SIGMA | — |
| Episode 1 | 60–600mm F4.5–6.3 DG OS HSM | Sports | Read at SIGMA | 60–600mm F4.5–6.3 DG OS HSM Sports |
GROUND BREAKING
SIGMA's eight-part GROUND BREAKING collection covers the products, materials, and manufacturing decisions that shaped the company. It ranges from the YS interchangeable mount and ultra-wide zoom development to SLD glass, the dp0 Quattro, and the APS-C 30mm F1.4.
Volume index
| Sequence | Lens, product, or subject | Official article | Surface & Stop |
|---|---|---|---|
| Vol. 8 | 30mm F1.4 EX DC HSM and 30mm F1.4 DC HSM | Art | Turning dreams into reality | 30mm F1.4 DC HSM | Art |
| Vol. 7 | WR Ceramic Protector development | Introducing the world's first glass-ceramic protection filter | — |
| Vol. 6 | SLD glass and APO Zoom 70–210mm F3.5–4.5 | Bringing Special Low Dispersion Glass to Life | — |
| Vol. 5 | Aizu factory and vertically integrated lens production | Made in Aizu — our identity | — |
| Vol. 4 | dp camera line and dp0 Quattro 14mm F4 | Taking things back to “0” | dp0 Quattro 14mm F4 |
| Vol. 3 | SIGMA Global Vision and the Art, Sports, and Contemporary lines | Innovators of a new standard | — |
| Vol. 2 | Ultra-wide zoom lineage and 18–35mm F1.8 DC HSM | Art | Intuition opens the doors of possibility | 18–35mm F1.8 DC HSM | Art |
| Vol. 1 | SIGMA's foundation, rear converter, and YS mount | With independence comes the energy to lead to the future | — |
RETICENCE
RETICENCE is SEIN's eight-part account of how lenses are actually built at SIGMA's Aizu factory. Each article takes one production process and explains what it contributes to a finished lens, from grinding and polishing glass to the metal patterns, presses, and molding that produce barrel components, and the surface treatments and paints that control internal reflection.
It is the only collection in this index devoted to lens manufacture rather than lens design, which is why it is listed separately from the two narrative series above. No single lens is its subject, so there is no catalog column.
| Process | Official article |
|---|---|
| Polishing | Read at SIGMA |
| Precision component | Read at SIGMA |
| Metal pattern | Read at SIGMA |
| Press | Read at SIGMA |
| Plastic injection molding | Read at SIGMA |
| Surface treatment | Read at SIGMA |
| Painting | Read at SIGMA |
| Jigs and tools | Read at SIGMA |