It has a wide-aperture lens to capture as much light as possible, and the technology requires no clunky auto-focus mechanism. It adjusts exposure time automatically.

它的大光圈镜头可以摄入尽可能大的光量，所用技术并不需要笨重的自动对焦系统，曝光时间也是自动调节。

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In this paper, we propose a new algorithm based on sub-aperture and filtered back-projection algorithm to estimate the anisotropy of objects scattering centers in wide-aperture imaging.

介绍了由投影重建图像的基本原理，对扇束滤波反投影重建算法进行了分析，并针对该算法的特点提出了一种提高算法求解速度的方法。

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In general, all you really need is one that is around F1.8 as that aperture is wide enough for most uses and you may even find yourself closing that up at times.

基本上，光圈在1.8左右的镜头已经足够大多数人使用了，并且时常你还要把光圈调小了使用。

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The ultra-wide aperture is a pleasure to use: backgrounds just a few feet behind the subject become soft pillows of blur.

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Its newly designed, large-aperture, 4x optical zoom lens (with the maximum aperture of F2.0 at wide-angle end), high-sensitivity, back-illuminated 16 megapixel CMOS image sensor, and sensor-shift Shake Reduction system ensure sharp, high-quality, low-noise images.

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The lens' wide F2 maximum, 9-bladed circular aperture enable beautiful background defocus ('bokeh') effects to rival or exceed professional-class DSLR camera lenses.

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