转换成手动对焦，确保你的焦距对准画面中视觉感强的地方。
Switch to manual focus and make sure your focus is upon a part of your image that is visually strong.
手动对焦---在弱光条件下相机会很困难地让焦距锁定。
Manual Focus - In low light situations cameras can struggle to get focusing locked correctly.
一个问题是与长镜头，特别是重型尼康的适配器，需要使用手动对焦镜头。
The one problem is with long lenses, especially heavy Nikon lenses used with an adapter that require manual focus.
如果这些方法都不奏效，你还可以利用镜头上的距离标示来手动对焦（以及合适的超焦距）。
If all these approaches are impractical, one could always resort to manual focus using distance markings on the lens.
对尼康最早期人工智能的光学- s手动对焦镜头已经在尼康新的自动对焦镜头超过。
The optics of most of Nikon's earlier AIs manual focus lenses have been exceeded in Nikon's newer AF lenses.
夜景不便自动对焦，因为没有足够的光线或者鲜明的对比，而若手动对焦，取景器亮度又不够，这些使得夜间摄影的对焦更为复杂。
To further complicate focusing, night scenes rarely have enough light or contrast to perform auto focus, nor enough viewfinder brightness to manually focus.
因为自动对焦可能不工作的很好，我将激活实时视图，据我所放大，然后手动聚焦在月球上。
Since autofocus may not work all that well, I'll activate live view, zooming in as far as I can, then manually focus on the moon.
该种摄像机可通过手动旋转旋钮装置调焦而满足不同监视现场对焦距的要求，同时制造成本低。
The video camera in the utility model can be focused by manual through the knob to meet the demand of different monitoring sites and achieves a lower producing cost.
该种摄像机可通过手动旋转旋钮装置调焦而满足不同监视现场对焦距的要求，同时制造成本低。
The video camera in the utility model can be focused by manual through the knob to meet the demand of different monitoring sites and achieves a lower producing cost.
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