让相机看得更清晰 数码相机调焦检测与微调

• 作 者: 王涛
• 出 处: 中国摄影
• 发表日期: 2011年04期
• 关键词: 调焦系统 自动调焦 尼康 大光圈 手动对焦 胶片时代 广角端 自动对焦 反光板 焦平面

目前的数码单反自动调焦能力可谓强大,但无论是高端的45或51点调焦系统,还是入门级的3点或11点调焦,都有一个共同的问题困绕着使用者,那就是跑焦。在很长一段时间里,面对跑焦,我们只能抱怨,但现在,当跑焦再次出现时,我们已经有了全面的解决方案!什么是跑焦所谓跑焦,简单的说就是在使用自动调焦功能时,最后拍到的影像的焦点与我们所选焦点有偏差——假定我们选取调焦点在中央,用单次调焦后不调整构图拍摄,影像中央却模糊,附近某点清晰,这就是跑焦。

The current digital SLR autofocus capability can be described as powerful, but whether it is high-end 45 or 51-point focusing system, or entry-level 3 o’clock or 11 o’clock focus, there is a common problem trapped around the user, that is Coke. In the long run, we can only complain about running coke, but now we have a comprehensive solution when coke jogging reappears! What is coke coke? Simply put is to use Autofocus function, the last photographed image focus and our selected focus deviations - Suppose we select the focus in the center, with a single focus without adjusting the composition of the picture, the central image is blurred, a certain point clear This is run coke.