国产镜头几乎都用的 STM 步进式马达作为对焦的驱动，这个技术你要和原厂双线性马达比速度还是有一定差距的，毕竟价格摆在这，你拿它拍运动、拍鸟、拍野生动物、拍不规则运动的孩子等，那非常有可能追不上。但是你风光扫街、拍拍人像，那这个对焦绰绰有余。

据推测，第一门锥形炮管炮械是由丹麦公司“舒尔茨与拉尔森”（Schultz & ...

松下推出全新L卡口镜头LUMIXS18-40mmF4.5-6.3，同时宣布LUMIXS9四款机身新色。全新的LUMIXS18-40mm是松下L卡口中最小、最轻的变焦镜头，重量约为155克。这款镜头的变焦范围从超广角18mm到标准焦段40mm，最近对焦 ...

Fuji Rumors上刊登了富士“X-M5”宣传视频。 富士巴西账号上公开了X-M5的第一个宣传视频。但很快就被删除，为了应对这种情况，已经有人拍下了屏幕截图。

用相机的朋友总有一个困扰，就是相机总体上是一个T字型结构，放在包里不好装内胆包，因为形状比较不方便。那么，有没有外形规整的微单相机呢？也有近似的方案，就是采用饼干镜头，这样总体结构就显得很小巧了。在微单时代，饼干镜头又受到了新的关注，主要是微单总体小 ...

With three side-firing weapons, a 25mm Gatling gun, a 40mm Bofors cannon, and a 105mm howitzer, it's easy to see why it got its name. (03:07) Explore Subscribe Newsletters Content Licensing Our Pa ...

苹果用户在使用iPhone镜像功能时存在一定的隐私和法律风险。网络安全公司Sevco近期对这一问题进行了调查研究，发现当用户在Mac设备上使用iPhone镜像功能后，所有运行的iPhone应用程序会在Mac库中创建一个条目。这些条 ...

They travel at a maximum speed of 70kph. The MoD has touted Ajax’s all-weather operability, cutting-edge sensors and 40mm stabilised cannon as competitive military advantages. Lockheed Martin UK ...

We've rounded up the best camera deals from Sony, Nikon, Canon and more ahead of Amazon Prime Day on October 8-9 — save $$$s ...

You can also score the Skullcandy Crusher ANC 2 headphones for over 40% off and the Canon ImageClass D570 all-in-one laser ...

Prime Big Deal Days, Amazon's "October Prime Day" sale, is live through Wednesday. We've found the best deals on all sorts of ...

Panasonic has officially launched the world's smallest and lightest zoom lens with autofocus for full-frame cameras – the ...