Canon Inc. is a Japanese multinational corporation specializing in the manufacture of imaging and optical products, including cameras, camcorders, photocopiers, steppers, computer printers and medical ...

Here are 10 must-read tips to help you take better photos of trains, planes, cars and other modes of transport.

Thread operations include thread creation, termination, synchronization (joins,blocking), scheduling, data management and process interaction. A thread does not maintain a list of created threads, nor ...

推出于 2016 年 1 月，佳能 PowerShot SX420 IS 是一款 20.0MP 小型传感器超级变焦相机，配备 1/2.3（6.17 x 4.55 毫米）尺寸的 CCD 传感器、内置图像稳定功能和 42.0 倍变焦 24-1008 毫米 F3.5-6.6 镜头. 主要特点： 20MP - 1/2.3 CCD 传感器 ISO 100 - 1600 24-1008 毫米 F3.5-6.6 ...