查询词典 Lens

The 135mm DC is Nikon's best hand-held portrait lens ever, as well as a killer-sharp 135mm lens for everything.

这是镜头是泥坑最好的手持人像镜头，当然也可以用来拍些别的东西。

The 18-200mm VR just became the world's best portrait lens, especially for pets. My $1,500 80-200mm AFS didn't focus close enough (5 feet) to let me get close shots of pets. Even better, the ability to zoom from tight head shot to group lets me get more shots that would otherwise be lost changing lenses or grabbing another camera. With the 18-200mm you can zip in and out from tight head shots to full body and environmental without making your subject wait for lens changes.

6个人认为这支18-200VR刚成为最好的人像镜头，特别是拍宠物——我那只花$1500买的80-200mm AFS只能在5英尺外对焦，弄的我都没法拍宠物——更棒的是，18-200强大的变焦能力能够囊括特写到全景，让我抓拍到了更多以往因为换镜头可能丢掉的生动瞬间，因为这支18-200VR让你的拍摄对象不用等待你换镜头了

It is professional in researching and manufacturing CO2 laser tube, laser power supply, focus lens, reflect lens and all kinds of photoelectric products.

我们始终坚持&专业制造，诚信经营，用心服务&的宗旨，在产品质量和产品售后方面已受到广大客户的认可。

It is professional in researching and manufacturing CO2 laser tube, laser power supply, focus lens, reflect lens and all kinds of photoelectric products.

公司自成立以来一直立足于为国内激光设备生产，激光切割雕刻加工，工艺礼品制作及服装生产加工等行业所普遍使用的激光设备提供优质的产品和服务。

It is professional in researching and manufacturing CO2 laser tube, laser power supply, focus lens, reflect lens and all kinds of photoelectric products.

公司依托武汉·中国光谷强大的科研实力和技术人才的优势，并凭借优越的地理位置和一批经验丰富的科研及管理人才，在CO2 激光器领域占有较高的知名度，是国内少数几家自主研发10W-300W 激光器及与之相配套的高性能开关电源镜片的企业之一。

A digital single- lens reflex camera is a digital camera that uses a mechanical mirror system and pentaprism to direct light from the lens to an optical viewfinder on the back of the camera.

所谓数字单镜头反光相机是指使用机械反光镜系统和五棱镜把光线从镜头引导至相机背后的光学取影器中的一种数码相机。

However, as the image sensor becomes smaller,higher lens resolution is needed, which requires twice the precision in lens manufacturing.

然而传感器变小，就需要更高的镜头分辨率，这又需要在镜头加工过程中提高两倍的精度。

For one thing, a twofold increase in lens precision meant a twofold or even threefold increase in manufacturing precision. What's more, to meet the demands of future image sensors with even higher pixel counts, it would be necessary to boost interchangeable lens performance to the limit.

一方面，两倍高的镜头精度意味着两倍甚至三倍的制造精度；另一方面，为了配合今后开发的更高像素的传感器，必须将交互式镜头的性能发挥到极致。

The 4-axis grinding machine tool and the grinding process for machining non-sphere glass lens are both very professional,resulting in very hard to control the lens precision.

非球面玻璃镜片四轴磨削加工的加工硬件和加工工艺都具有很强的专业性，因而产品的加工精度控制问题显得十分突出。

Finally, oculars with narrow apparent fields of view can be of simpler construction than wide angle binoculars (e.g. 3 lens element reverse Kellner instead of 5 lens element Erfle), are therefore cheaper, provide a better light transmission and are less prone to ghost images, because they contain less air-to-glass surfaces.

最后，小视场目镜也可以比广角望远镜结构上更简单（如Kellner的3片式代替Erfle的5片式），也因此更便宜，提供了更好的透光性，因为减少了玻璃表面，也减少了产生鬼影可能。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切