ニコンZレンズの将来
https://www.digitalcameraworld.com/news/nikons-future-z-system-plans-revealed
>non-S-line lenses, which will focus more on affordability.
>However, they will still meet a high quality standard while focusing on lower cost,
>so maybe won’t have weather sealing or they'll use different materials.

＞非S-Lineレンズはお手頃価格であることにフォーカスを置く。
＞素材を変え防滴シーリングを省略して安くするが、
＞高画質を保つ。