telephoto camera lens

基本解释

Then there is the camera, the telephoto lens, and the cellphone with a camera.
然后就是相机、长焦镜头、带摄像头的手机。
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.
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。
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.
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。

DENVER, CO (September 10, 2012) - PENTAX RICOH IMAGING AMERICAS CORPORATION (PENTAX), today expands on the innovative Q-system with the new 12.4 megapixel PENTAX Q10 interchangeable lens camera, new Q-Mount PENTAX 06 15-45mm F2.8 telephoto zoom lens and Adapter Q for PENTAX K-mount lenses, expanding its family of compact Q series products.
ENGADGET: Pentax launches Q10 interchangeable lens camera, K-5 II and K-5 IIs flagship DSLRs
As a result, the PENTAX Q10 produces sharp, blur-free images even under demanding conditions that are prone to camera shake, such as use with a telephoto lens or shooting in low-light without flash.
ENGADGET: Pentax offers 100 different custom color options for its Q10 mirrorless camera
This hybrid system guarantees the photographer sharp, blur-free images even under demanding shooting conditions prone to camera shake, such as when using a telephoto lens, shooting with incident light in poorly lit locations, or photographing sunset scenes.
ENGADGET: Pentax launches brass-bodied MX-1 point-and-shoot: 12MP with 4X zoom (update: now with hands-on photos)