slr1文法_SLR的完整形式是什么？

slr1文法

单反：单镜头反光 (SLR: Single Lens Reflex)

SLR is an abbreviation of Single Lens Reflex. It is used in high standard cameras. SLR makes use of an automatic moving mirror arrangement that makes it possible for photographers to perceive precisely the same, captured by the film or digital imaging system. Mirror and prism system is used by single-lens reflex to perceive precisely what will be captured.

SLR是Single Lens Reflex的缩写 。它用于高标准相机。 单反相机利用自动移动镜装置，使摄影师可以感知由胶片或数字成像系统拍摄的图像。单镜头反光使用反光镜和棱镜系统来精确感知要捕获的内容。

It is generally called the DSLR (Digital Single Lens Reflex) camera.

通常称为DSLR(数码单镜反光)相机 。

Two optical light paths are contained by all the cameras with viewfinders before the development of SLR, which are,

在开发SLR之前，所有带取景器的相机都包含两个光学路径，分别是：

To the film through the lens, and
通过镜头到胶片，以及
Located above, which is TLR or twin-lens reflex or to the side, which is rangefinder.
位于TLR或双镜头反射镜的上方，或位于测距仪的侧面。

The viewing lens is expected to traverse with the film lens at a fixed point someplace in front of the camera because the viewfinder and the film lens cannot share a similar optical path. The majority of SLR cameras allow upright and laterally correct viewing by the utilization of a roof Pentaprism positioned in the optical path between the reflex mirror and viewfinder.

由于取景器和胶片透镜无法共享相似的光路，因此，预计观察镜将与胶片透镜一起在相机前方某个位置移动。大多数单反相机通过利用位于反射镜和取景器之间的光路中的屋顶五棱镜来实现直立和横向正确的观看。

Till the 1990s, SLR was the most highly developed photographic preview system existing, but the current development and enhancement of digital imaging technology with an on-camera live LCD preview screen has overshadowed recognition of SLR's.

直到1990年代，SLR才是最先进的照片预览系统，但是当前通过相机实时LCD预览屏幕进行的数字成像技术的开发和增强已经使对SLR的认可蒙上了阴影。

The Italian Rectaflex A.1000 is the first commercially created SLR that engaged a roof Pentaprism.

意大利Rectaflex A.1000是第一款商业化的单反相机，与屋顶五棱镜相连。

In 1952, Asahi created the Asahiflex and in 1954, the Asahiflex IIB. In 1957, the Asahi Pentax joint the fixed Pentaprism and the right-hand thumb wind lever. In 1959, Nikon, Canon, and Yashica launched their first SLRs.

1952年，旭创建了Asahiflex，1954年创建了Asahiflex IIB。 1957年，Asahi Pentax将固定的Pentaprism和右手拇指挡风杆连接在一起。 1959年，尼康，佳能和Yashica推出了第一批单反相机。

Image source: http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/slr.html

图片来源：http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/slr.html

优点 (Advantage)

The key benefit of SLR cameras in comparison to other cameras is that the lenses can be changed to get the preferred images.

与其他相机相比，SLR相机的主要优势在于可以更换镜头以获得首选图像。

The image stabilizing function is effective.
图像稳定功能有效。
The zoom capturing function is longer.
变焦拍摄功能更长。
The sensor size is large.
传感器尺寸大。
Flash intensity control.
闪光强度控制。
Control of photography is significant.
摄影的控制很重要。
Print quality is effective.
打印质量有效。
Underwater photography is satisfactory.
水下摄影是令人满意的。

坏处 (Disadvantage)

The key drawback of SLR cameras in comparison to other cameras is that it is heavier and costlier. It costs nearly higher than the point-and-shoot camera.

与其他相机相比，SLR相机的主要缺点是它更重且更昂贵。它的成本几乎比傻瓜相机高。

The photo quality is not good.
照片质量不好。
The viewfinder is either exceptionally minute or in a few cases not even present.
取景器非常微小，或者在某些情况下甚至不存在。
It has diminutive controls.
它具有较小的控件。
It has a touch screen, which wouldn’t be as stable during the capturing of an image.
它具有触摸屏，在捕获图像时不会那么稳定。
Its flexibility is constrained.
它的灵活性受到限制。