autofocus

简明释义

英[ˈɔːtəʊfəʊkəs]美[ˈɔːtoʊfoʊkəs]

n. （照相机的）自动聚焦装置；（照相机的）自动聚焦

英英释义

单词用法

同义词

反义词

例句

1.When we humans look at the world about us, our autofocus eyes tend to see everything in-focus.

当我们人类看周围的世界时，我们那自动聚焦的眼睛试图看清每样东西。

2.In this paper, a new method of phase errors estimation based on higher order statistics is proposed for SAR imagery autofocus.

提出了一种基于高阶统计量分析的相位误差估计算法，用于SAR图像自聚焦。

3.In the photo to the left, autofocus would be almost guaranteed by using the bright light at the bottom.

在左边的照片里，你可以利用画面底部的亮处进行自动对焦。

4.The imaging results based on the measured ISAR data demonstrate a good performance of the autofocus algorithm.

将该算法应用于实测数据的ISAR成像中，得到了较好的聚焦结果。

5.The first mass-produced autofocus camera was the Konica C35 AF, a simple point and shoot model released in 1977.

第一次年夜范围消费的主动对焦相机柯尼卡C35主动对焦，一个简单的拍摄形式，并在1977年发布。

6.In synthetic aperture sonar imaging, the residual phase error is mainly corrected via autofocus.

合成孔径声呐成像中，主要通过自聚焦校正剩余相位误差。

7.I was able to zoom three and a half city blocks away without the autofocus flinching at all.

自动对焦根本不用退缩，就能锁定三个半街区之外的拍摄对象。

8.The camera's autofocus feature allows for quick adjustments to the focus, ensuring sharp images.

相机的自动对焦功能允许快速调整焦距，确保图像清晰。

9.When taking portraits, I rely on the autofocus to capture the subject's eyes in perfect clarity.

在拍摄人像时，我依赖于自动对焦来捕捉主体的眼睛，确保清晰度。

10.Some smartphones have advanced autofocus systems that can track moving subjects.

一些智能手机配备了先进的自动对焦系统，可以跟踪移动的对象。

11.Using autofocus is essential in wildlife photography where animals are constantly moving.

在野生动物摄影中使用自动对焦是至关重要的，因为动物不断移动。

12.The new lens features improved autofocus technology that enhances low-light performance.

新镜头具有改进的自动对焦技术，提高了低光环境下的表现。

作文

In the world of photography, technology has played a crucial role in enhancing the quality and ease of capturing images. One of the most significant advancements in this field is the concept of autofocus, which refers to the camera's ability to automatically adjust its lens to focus on the subject without requiring manual intervention. This innovation has transformed how photographers approach their craft, making it accessible to both amateurs and professionals alike. The autofocus system operates using various methods, including phase detection and contrast detection, each with its advantages and applications. The primary benefit of autofocus is speed. In fast-paced environments, such as sports events or wildlife photography, the need to capture fleeting moments is paramount. Manual focusing can be time-consuming and may result in missed opportunities. With autofocus, photographers can quickly lock onto their subjects, ensuring sharp images even in challenging conditions. This capability allows for greater creativity, as photographers are less concerned about technical adjustments and can focus more on composition and lighting. Moreover, autofocus technology has evolved significantly over the years. Modern cameras are equipped with sophisticated algorithms that can detect and track moving subjects, making it easier to achieve perfect focus. For instance, many contemporary DSLRs and mirrorless cameras feature eye-tracking autofocus, which identifies the subject's eyes and maintains focus on them, a critical aspect for portrait photography. This level of precision was once a challenge, but advancements in autofocus systems have made it possible to produce stunning results effortlessly. However, while autofocus offers numerous advantages, it is not without its limitations. In low-light situations or when dealing with subjects that lack contrast, autofocus can struggle to find the correct focal point. Photographers often need to rely on manual focusing in these scenarios. Additionally, autofocus systems can sometimes misinterpret the intended subject, leading to out-of-focus images. Understanding when to trust autofocus and when to switch to manual control is an essential skill for any photographer. The impact of autofocus extends beyond traditional photography; it has also revolutionized videography. With the rise of video content creation, having a reliable autofocus system is crucial for maintaining a professional look. Many videographers now depend on continuous autofocus to ensure that subjects remain in focus while moving within the frame. This capability has opened up new storytelling possibilities, allowing creators to focus on narrative elements rather than technical challenges. In conclusion, the introduction of autofocus technology has significantly changed the landscape of photography and videography. It has empowered photographers to capture stunning images with ease and efficiency, enabling them to express their creativity without being bogged down by technical limitations. While it is essential to recognize the challenges that may arise with autofocus, mastering this technology can greatly enhance one’s photographic skills. As technology continues to advance, we can only anticipate further improvements in autofocus systems, paving the way for even more innovative and exciting photographic experiences.

在摄影的世界中，技术在提高图像捕捉质量和便利性方面发挥了至关重要的作用。其中最重要的进展之一就是“自动对焦”的概念，它指的是相机能够自动调整镜头以对焦于主体，而无需手动干预。这一创新改变了摄影师对自己创作的方式，使业余爱好者和专业人士都能更容易地接触到摄影。“自动对焦”系统通过多种方法运作，包括相位检测和对比度检测，每种方法都有其优点和应用。 “自动对焦”的主要好处是速度。在快速变化的环境中，例如体育赛事或野生动物摄影，捕捉稍纵即逝的瞬间至关重要。手动对焦可能耗时且可能导致错过机会。借助“自动对焦”，摄影师可以迅速锁定主题，即使在具有挑战性的条件下也能确保图像清晰。这种能力使得创造力得以更大程度的发挥，因为摄影师不再过于担心技术调整，可以更多地专注于构图和光线。 此外，“自动对焦”技术近年来也有了显著发展。现代相机配备了复杂的算法，可以检测和跟踪移动主体，使得实现完美对焦变得更加容易。例如，许多现代单反相机和无反相机都具备眼动跟踪“自动对焦”功能，能够识别主体的眼睛并保持对其的对焦，这是人像摄影的关键方面。这种精确度曾经是一个挑战，但“自动对焦”系统的进步使得轻松获得惊人的效果成为可能。 然而，虽然“自动对焦”提供了众多优势，但它并非没有局限性。在低光照情况下或处理缺乏对比度的主体时，“自动对焦”可能难以找到正确的焦点。在这些情况下，摄影师通常需要依赖手动对焦。此外，“自动对焦”系统有时可能误解意图主体，从而导致图像失焦。了解何时信任“自动对焦”以及何时切换到手动控制是任何摄影师必备的技能。 “自动对焦”的影响不仅限于传统摄影；它还彻底改变了摄像技术。随着视频内容创作的兴起，拥有可靠的“自动对焦”系统对于保持专业外观至关重要。许多摄像师现在依靠持续的“自动对焦”来确保主体在镜头内移动时保持对焦。这种能力开辟了新的叙事可能性，让创作者可以专注于叙事元素，而不是技术挑战。 总之，“自动对焦”技术的引入显著改变了摄影和摄像的格局。它使摄影师能够轻松高效地捕捉惊人的图像，使他们能够在不受技术限制的情况下表达创造力。尽管必须认识到“自动对焦”可能带来的挑战，但掌握这项技术可以大大增强一个人的摄影技能。随着技术的不断进步，我们只能期待“自动对焦”系统的进一步改进，为更具创新性和激动人心的摄影体验铺平道路。