wideanglelens行车记录仪说明书 (1)长按电源开关键开机成关机。行车记录仪连接充电器时,DVR自动开机,断开充电器时,延迟5秒自动关机。 (2)录像模式DVR开机后会自动进入录像状态。录像招示符号闪烁。录像时。按OK键停止。注意:使用前请先播入SD卡。 (3)拍照模式开机后按模式塘选择拍脱模式.按OK键进行拍用。 (...
广角镜头是指其焦距比标准镜头的短的摄影镜头,由于其视角范围比标准镜头广,故称为广角镜头,也称短焦距镜头。 广角镜头又分成两类:普通(小)广角镜头和超广角镜头。 对于135画幅而言,广角镜头现有的焦距范围约为14～40mm,视角范围为60~115°,其中焦距自17～21mm的称为超广角镜头;焦距自24～40mm的称为普通广角镜头。...
Because of the wide-angle field of view, when you look through a wide-angle lens, you’ll encounter an expansive scene. For instance, if you’re standing on a beach at sunset, a wide-angle lens will show you the setting sun, but it’ll also show you the rocks at your feet and th...
A wide-angle lens has a three-group configuration in which a plastic aspherical lens is used in the first lens group on the enlargement side, and predetermined conditional expressions concerning focal lengths of individual lenses constituting the first lens group are satisfied, whereby image quality ...
A wide-angle lens has afocal lengthof 35 mm or shorter, which gives you a wide field of view. The wider your field of view, the more of the scene you’ll be able to see in the frame. These lenses are ideal for many scenarios and most photographers have at least one trusty wide-an...
What is a wide angle lens? A wide-angle lens is any lens with a set focal length that is shorter than the length of the sensor or film.
The present invention provides a wide-angle conversion lens, the wide-angle conversion lens disposed on the object side in the main lens and changing the viewing angle, wherein said wide-angle conversion lens comprising: a first lens having a negative refractive power; a second lens having a ...
The wide-angle lens can collect the incident lights of three field coverages (corresponding to the three incident faces of the light-combination prism), and has an ideal field coverage angle (approaching to 720 degrees). Besides, the invention also provides an imaging device which adopts the ...
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-- 72.5° wide-angle lens + 16x digital zoom Using a 72.5° high quality ultra-wide-angle lens, the optical zoom reaches 12x and support 16x digital zoom. -- 1080P It adopts a 1/2.8-inch, 2.07 million effective pixel high quality HD CMOS ...