先前的一张焦距短，第二张他用了长焦。
For the first shot he used a shorter focal length and the second shot he used a longer one.
改进了1米处的重点在长焦微距模式。
然后就是相机、长焦镜头、带摄像头的手机。
Then there is the camera, the telephoto lens, and the cellphone with a camera.
只有将在最长的长焦相机的设置使用，以避免晕。
It is only to be used at the longest telephoto setting of the camera in order to avoid vignetting.
可选的长焦和广角镜头为补充的多功能性和特殊的申请。
Optional telephoto and wide Angle lenses available for added versatility and special applications.
我为拍摄这张近照更换了镜头，我喜欢长焦压缩照片的感觉。
We changed lenses and moved closer for this image. I like the compression a lot more in this and the rest of the images.
如果你想用300mm长焦成为街头摄影师，那是做梦。
If you think that using a 300mm makes you a Street Photographer, you are dreaming.
使用长焦镜头拍摄远离北极星的星星，会增加星星在相片上移动轨迹。
Using a longer focal length and photographing stars far from the north star increase the distance stars will move across the image.
三脚架或者脚架能让你即使是使用长焦镜头，也能获得清晰的影像。
Otherwise a tripod or monopod can help you to get sharp pictures even with a tele lens.
红外成像窗口(镜头)配置标准，长焦或广角镜头根据所定购的镜头。
IR image window (lens) Standard, tele or wide Angle lens depending on option purchased.
确实，广角不如长焦这么迫切需要稳定性，但并不是说VR就是多余的。
While it's true that stabilization is nowhere near as essential as it is on a long telephoto, this doesn't make it superfluous.
除非金钱对你来说没有什么意义，要知道这些长焦镜头都是身价娇贵的家伙！
Not unless money means nothing to you. Longer lenses are available at higher prices!
长焦变焦镜头用于军事瞄准时，变焦过程中较大的光中心漂移，降低瞄准精度。
When zoom lens are used for military sighting, the drift of optical center caused by the change of focus length will reduce the sighting accuracy severely.
同样的锐度下降问题也出现在镜头的长焦段（包括中央的锐度也下降得厉害）。
The same applies to the sharpness in general (including the image center) at the lens' tele setting.
组件繁多的长焦镜头也许会更难驾驭，镜头前端如果使用了外置滤镜也会助长眩光。
Long telephoto lenses with many elements are probably more difficult to use. External filters in front of the lens can also increase flare.
光线不好、或者使用长焦拍摄，由于需要长时间的曝光，相机的抖动很容易让照片糊掉。
Photos taken in low light or with long telephoto lenses can easily be ruined by blur caused by the camera moving during the exposure (camera shake).
光线不好、或者使用长焦拍摄，由于需要长时间的曝光，相机的抖动很容易让照片糊掉。
Anti shake systems Photos taken in low light or with long telephoto lenses can easily be ruined by blur caused by the camera moving during the exposure (camera shake).
可使用闪光灯，但鼓励摄影师使用长焦镜头并避免群聚在发言者周围以便不影响他们的工作。
Flash units may be used, but photographers are encouraged to use telephoto lenses and avoid grouping around speakers so as not to disturb their work.
知道这样一件事是很重要的——长焦和短焦都使得夜空的拍摄富有魅力，它们解决的是不同的美学问题。
It is important to understand one thing - shooting of the night sky is equally fascinating with long and short focuses, they just solve different aesthetic tasks.
限制因素之一就是观察角度，这与使用照相机的情况类似：长焦镜头的视野比广角镜头的观察角度要窄得多。
One limiting factor is the viewing Angle, which is comparable to using a camera lens: a telephoto lens has a narrower view than a wide-angle lens.
在公众渴望自由的背景下，我们这些拿着长焦镜头、装扮酷似好莱坞狗仔队的人，自然会遭到安全人员跟踪。
And the public's desire for freedom, of course, is why security agents were hunting us, snapping pictures with telephoto lenses fit for Hollywood paparazzi.
为了达到这一效果你要么选择走近一些，要么把拍摄主体移到身边或者要么就是使用长焦镜头来拉近画面。
To get this effect you have the option of moving yourself closer, moving your subject closer or using a longer focal length to give the effect of closeness.
这使得它更容易稳定相机正常，并应有助于控制相机的抖动，特别是如果您经常使用或更长的变焦长焦镜头。
This makes it easier to steady the camera properly, and should help to control camera shake, especially if you frequently use the telephoto zoom lens or longer.
我通过使用宽角焦距应该使建筑形状弯曲到何种程度，或者如果我想避免它，使用更接近标准值乃至长焦镜头该怎么做。
How deep I should distort the building shapes by using wide angle focal length or if I should avoid it and use more close to standard values or even a telelens.
比如，尼康售价399.95美元的P500可以变焦36倍——相当于在35毫米相机上装一个800毫米的长焦镜头——还能够轻而易举地放入手提包里。
For example, Nikon's $399.95 P500 offers a 36x zoom -- the equivalent of an 810 mm telephoto on a 35 mm camera -- but easily fits in a laptop bag.
摄影师迈克尔·梅尔佛(MichaelMelford)给动物拍照的时候最喜欢在它们的周围显示出栖息地环境——这比用长焦镜头拍摄近景照片要更好。
A favorite composition of photographer Michael Melford's is an environmental shot showing the animal surrounded by its habitat-rather than the usual tight shot taken with a long lens.
第二部分优化设计出多种调节焦长和聚焦偏转的方法，并指出各种方法的相对优势。
The second part optimally designs many kinds of methods about adjustments of focal length and focusing deflection, and points out their relative superiority.
本文讨论了当固定条形镜面聚光器长轴沿东西向放置时，太阳时角变化所引起的焦线位置的移动。
This paper deals with a displace of focusing line position which is caused by change of solar hour angle when a long axis of FMSC is placed in east-west direction.
实验室评价结果表明，YJZ - 101型阻垢剂可有效抑制焦垢在油浆换热器中形成，使换热器保持较高的换热效率，维持装置的长周期正常运转。
The results showed that it can effectively inhibit fouling formation, heat exchanger keep high Heat-change efficiency, and ensure Long-term running of unit.
可根据冶炼钢种，炉子大小及设备条件，分别选用配料加焦、喷碳、富氧、长弧法或全程喷碳、富氧、长弧法。
The following two methods can be chosen according to the steel sorts to be melted, furnace sizes and other equipment conditions. One is carbon powder and coke injection, with rich-oxygen injection an…
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