镜头结构：（点击这里教你如何看镜头结构图） 适马 20mm F1.8 EX Aspherical DG DF RF 镜头结构图 参数规格： 焦 距: 20mm 最大光圈: F1.8 镜头结构: 13 片 11 组 最细光圈: F22 视 角: 94.5° 光圈叶片数目: 9 片 最近对焦距离: 20cm 放大倍率: 1:4 滤镜口径: 82mm 体 积: 直径88.6mm X 长度89.5mm 重 ...

福伦达不久前正式发布了超大光圈定焦镜头——NOKTON 50mm F1.0 Aspherical的索尼E卡口版本，也是目前索尼微单用户所能购买到为数不多的F1.0标头，比F1.2 ...

这次，我们将这款镜头安装在尼康Z f上，拍摄了梦幻般的风景照片。 一、经典的设计和尺寸 NOKTON 40mm F1.2 Aspherical 是福伦达为兼容尼康 Z 卡口的全画幅无反光镜相机制造的镜头。 光圈值为F1.2的明亮镜头，带有“NOKTON”的称号，光圈值为F1.5以下的明亮大口径镜头。

And aspherical elements in a lot of modern lenses are not actually there to correct for the fact that most of the lens elements are truly spherical. They’re often used to perform clever tricks around ...

福伦达RF卡口NOKTON 75mm F1.5 Aspherical四月开售，售价135,000日元（折合人民币约6500元）该镜头预计四月开售。 福伦达RF卡口NOKTON 75mm F1.5 Aspherical采用6组7 ...

今日，确善能推出了福伦达 NOKTON 75mm F1.5 Aspherical 佳能 RF 卡口镜头，并将于4月开始销售。这款全画幅无反镜头采用6组7片的镜头结构设计，其中包括3 ...

Sony lenses have powerful performance. The colors, bokeh, and sharpness are superb, and the overall design makes them easy to ...

DURING recent years, renewed and increasing interest has been shown in the use of aspherical surfaces as a means of improving the performance of optical instruments, and one notable application ...

Global Aspherical Lens Market Global Aspherical Lens Market Dublin, Oct. 16, 2023 (GLOBE NEWSWIRE) -- The "Aspherical Lens Market by Type (Glass Aspherical lens, Plastic Aspherical lens), Offering ...

Paying homage to lenses from the sixties and seventies, the Voigtlander 28mm f/2.8 Aspherical SL IIs Color-Skopar is available with a white or black rim and is priced at £499.