The solution is often to shoot a few clicks smaller than the lenses widest aperture, then use the preview screen and zoom button on your camera to make sure everyone is looking good.

一般的解决方法就是用比镜头最大光圈小一些的光圈值，然后用屏幕预览，放大，确认每个人看上去都挺好。

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When you press the shutter release on the camera, a complex sequence of events occurs, including setting the aperture in the lens, flipping up the mirror of an SLR and a lot more.

实际上，当你按下快门时，一套复杂的程序开启，包括镜头内光圈的设置、一块单镜头反射镜的升起和其他更多的步骤。

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Notice that perhaps your camera will select, on its own, a shutter speed of 1/125 with an aperture of F11.

注意相机可能会自动将快门速度设到1/125，光圈设到F11。

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One stop of light is usually defined as halving or doubling the amount of light entering the camera, depending on the shutter speed, aperture, or ISO changes made.

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This phone also breaks new ground in optics with 1080p video recording, f2.0 aperture and a dedicated HTC ImageChip on the main 8-megapixel camera and an ultrawide-angle lens on the front camera that lets you fit up to four people in the frame for a premium Skype experience.

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Dedicated lens rings allow for fingertip control of focus and aperture, while a DSLR-style Focus mode dial on the front of the camera enables easy switching between focus modes.

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