IT之家1 月 22 日消息，星曜光学今日推出了第三代 MF 50mm F1.4 镜头，这是一款 APS-C 画幅镜头，定价 559 元，1 月 22 日~2 月 4 日首发价 539 元。 该镜头采用双高斯结构，5 组 6 片的光学结构，其中包含 1 片 ED 镜片和 1 片高折射率镜片。 该镜头采用有级光圈，配有 9 ...

The tree planting project in Lunt in Sefton is part of the National Trust and England's Community Forests' national Trees for Climate programme. It aims to create 519 hectares (1282 acres ...

Cue solar binoculars, which have built-in solar filters on their objective lenses to allow in only safe levels of sunlight. There are only two major brands of solar binoculars, Lunt and Celestron, and ...